Danfoss ERC 21X Series Electronic Refrigeration Control User Guide

June 16, 2024
Danfoss

ERC 21X Series Electronic Refrigeration Control

Product Information

Specifications

  • Controller Type: Electronic refrigeration control ERC 21X
    series

  • Applications: High, medium, and low temperature commercial
    refrigeration

  • Defrost Compatibility: Natural, electrical, and hot gas

  • Input Voltage: 230 V AC, 50/60Hz or 115 V AC, 60Hz

  • Relay Output: 16 A

  • Maximum Compressor Power: Up to 2 hp (depending on power factor
    and motor efficiency)

General Description

The ERC 21X is a smart multipurpose refrigeration controller
designed for commercial refrigeration applications. It features
four push buttons, a large display, and an intuitive menu structure
for easy operation. The controller comes with pre-defined
applications and energy efficiency features such as smart
evaporator fan management, night mode, and defrosts on demand.

The ERC 21X series is available in three versions and supports
both 230 V AC, 50/60Hz and 115 V AC, 60Hz power supply.

Functions

  • Voltage protection: Ensures safe operation of the unit

  • Compressor protection: Protects the compressor from damage

  • Compressor protection against high condensing temperature:
    Prevents excessive temperature

  • Reference displacement: Controls the reference temperature for
    optimal performance

  • Night mode: Reduces energy consumption during off-peak
    hours

  • Fan cycling during compressor OFF cycle: Manages the evaporator
    fan operation

  • Defrost on Demand: Activates defrost cycle based on actual
    need

Applications

The ERC 21X is suitable for various commercial refrigeration
applications, including:

  • Glass door merchandisers
  • Commercial fridges and freezers
  • Cold rooms
  • Other commercial refrigeration applications

Electrical Connection Diagram

(Diagram not provided in the manual)

Configuration

The ERC 21X controller offers various configuration options:

  • Menu navigation and overview
  • Quick configuration at power up
  • Quick configuration via cFg menu
  • Factory resetting

Parameters

The controller allows configuration of the following
parameters:

  • Thermostat settings
  • Alarm settings
  • Defrost settings

Product Usage Instructions

Installation

  1. Ensure power supply is disconnected before installation.

  2. Mount the ERC 21X controller in a suitable location.

  3. Follow the electrical connection diagram provided in the manual
    for proper wiring.

  4. Connect the necessary sensors and devices to the
    controller.

  5. Ensure all connections are secure and properly insulated.

Configuration

To configure the ERC 21X controller, follow these steps:

  1. Power up the controller.

  2. Use the push buttons to navigate through the menu options.

  3. For quick configuration, follow the on-screen prompts during
    power up.

  4. For detailed configuration, access the cFg menu and follow the
    instructions.

  5. Adjust the thermostat, alarm, and defrost settings as per your
    requirements.

  6. Save the configuration changes and exit the menu.

Usage

Once the ERC 21X controller is installed and configured, it will
automatically regulate the refrigeration system based on the set
parameters. The controller will monitor the temperature, activate
defrost cycles when necessary, and protect the compressor from
potential damage. The large display provides real-time information
and status codes for easy monitoring.

FAQ

Q: What are the available versions of the ERC 21X

controller?

A: The ERC 21X series is available in three versions: ERC 211,
ERC 213, and ERC 214. Each version offers different features and
capabilities.

Q: What are the typical applications of the ERC 21X

controller?

A: The ERC 21X controller is suitable for various commercial
refrigeration applications, including glass door merchandisers,
commercial fridges and freezers, cold rooms, and other commercial
refrigeration applications.

Q: How do I reset the ERC 21X controller to factory

settings?

A: To reset the controller to factory settings, access the
factory resetting option in the configuration menu. Follow the
on-screen prompts to confirm the reset.

User Guide
Electronic refrigeration control Type ERC 21X series
Smart multipurpose refrigeration controller

Electronic refrigeration control, type ERC 21X

Contents

Introduction

5

Application

5

General description

5

ERC 21X series

5

ERC 211

5

ERC 213

6

ERC 214

6

Functions

8

Voltage protection

8

Compressor protection

8

Compressor protection against high condensing temperature

8

Reference displacement

9

Night mode

9

Fan cycling during compressor OFF cycle

10

Defrost on Demand

10

Applications

11

Pre-defined applications

11

ERC 211 controller

11

ERC 213 controller

11

ERC 214 controller

12

Electrical connection diagram

12

Configuration

14

Menu navigation and overview

14

Quick configuration at power up

14

Quick configuration via cFg menu

15

Factory resetting

17

Display codes

17

Parameters

18

Parameter description

18

Configuration

18

Thermostat

18

Alarm settings

19

Defrost

19

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 2

Electronic refrigeration control, type ERC 21X
Fan Compressor Miscellaneous Service Parameters: ERC 211 Configuration Reference Alarm Defrost Compressor Others Polarity Parameters: ERC 213 Configuration Reference Alarm Defrost Fan control Compressor Others Polarity Parameters: ERC 214 Configuration Reference Alarm Defrost Fan control Compressor Others Polarity Alarm code
Product specification Technical specification Mounting Installation steps Dimensions Accessories
© Danfoss | Climate Solutions | 2024.01

20 20 21 22 22 22 23 23 23 24 24 24 24 24 25 25 25 26 26 26 27 27 27 27 28 28 28 29 29 29 30
31 31 31 32 32 32
BC194286421698en-001002 | 3

Electronic refrigeration control, type ERC 21X

KoolKey (EKA200)

32

Mass Programming Key (EKA 201)

32

Bluetooth Adapter (EKA 202 & EKA 203)

33

Ordering

34

Certificates, declarations, and approvals

35

Certificates, declarations, and approvals

35

Online support

36

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 4

Electronic refrigeration control, type ERC 21X
Introduction
Application
ERC 21X is a smart multipurpose refrigeration controller designed to fulfill today’s requirement of commercial refrigeration applications. This controller is suitable for high, medium and low temperature applications with natural, electrical and hot gas defrost compatibilities. Typical applications include Glass door merchandisers, commercial fridges and freezers, cold rooms and various other commercial refrigeration applications.

General description
ERC 21X controller comes with four push buttons, a big display, easy and intuitive menu structure and pre-defined applications ensure ease of use. Controller is loaded with energy efficiency features like smart evaporator fan management, night mode and defrosts on demand features.
High capacity 16 A relay enable direct connection of heavy loads without use of intermediate relay: up to 2 hp compressors depending on its power factor and motor efficiency (power factor greater than 0.65 for 230 V and greater than 0.85 for 115 V).
Safe operation of the unit is ensured through voltage protection, zero cross switching and high condenser temperature protection features.
ERC 21X series
Three version of ERC 21X is available in both 230 V AC, 50/60HZ and 115 V AC, 60Hz.
· ERC 211: single relay output for refrigeration and heating applications. · ERC 213: three relays outputs for ventilated refrigeration and heating applications. · ERC 214: four relays outputs for ventilated refrigeration and heating applications.
ERC 211
ERC 211 has one relay output and two inputs (1 analogue, 1 analogue/digital). This controller can be used for either cooling or heating applications.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 5

Danfoss 80G8377

Electronic refrigeration control, type ERC 21X Figure 1: ERC 211
DI1
Sair DO1

Sc
Outputs: · Relay 1: compressor/solenoid valve control or simple heater in case of heating application.
Inputs: · Input 1: control sensor (Sair). · Input 2: condenser sensor or digital inputs that can be configured for various functions as mentioned under menu
code o02.
ERC 213
ERC 213 has three relays outputs and four inputs (2 analogues, 1 analogue/digital, 1 digital) for cooling and heating applications.
Figure 2: ERC 213 DI1 DI2

Danfoss 80G8378

Sair

S5
DO2 DO3

DO1 Sc

Outputs: · Relay 1: compressor/solenoid valve control or heater in case of heating applications · Relay 2: can be configured defrost control or external alarm or cabinet light · Relay 3: fan control
Inputs: · Input 1: control sensor (Sair) · Input 2: defrost sensor (S5) · Input 3: condenser sensor (Sc) or digital input that can be configured for various functions as mentioned under
menu code o02 · Input 4: digital input that can be configured for various functions as mentioned under menu code o37
ERC 214
ERC 214 has four relays outputs and four inputs (2 analogue, 1 analogue/digital, 1 digital) for cooling applications.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 6

Danfoss 80G8379

Electronic refrigeration control, type ERC 21X
Figure 3: ERC 214 DI1 DI2 DO4
Sair

S5
DO2 DO3

DO1 Sc

Outputs: · Relay 1: compressor/solenoid valve control · Relay 2: defrost control, external alarm or cabinet light · Relay 3: fan control · Relay 4: this can be configured for either cabinet light or external alarm
Inputs: · Input 1: control sensor (Sair) · Input 2: defrost sensor (S5) · Input 3: condenser sensor (Sc) or digital input that can be configured for various functions as metioned under
menu code o02 · Input4: digital input that can be configured for various functions as mentioned under menu code o37

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 7

Danfoss 80G8366

Electronic refrigeration control, type ERC 21X
Functions
Voltage protection
The voltage protection ensures that the compressor motor is operating within safe voltage ranges. If the power supply voltage gets outside the specified high/low voltage cut-out ranges, the compressor is cut-out or restricted from starting. Normal compressor operation is resumed when the power supply voltage is back in the area between the high voltage cut-out limit and the low voltage cut-in limit. Figure 4: Voltage protection
High voltage limit
Low voltage cut-in limit (compressor start)
Low voltage cut-out limit (alarm and compressor stop)
Compressor protection
Compressor protection feature protects compressor from short ON and OFF cycles by securing minimum run and stop time. This would allow the refrigeration system to stabilize before starting the compressor again and also avoid the chances of too many compressor cycles. Figure 5: Compressor protection
min run time ON
OFF min stop time time
CUT-IN
CUT-OFF time
Compressor protection against high condensing temperature
If the condenser is blocking up with dirt and thereby reaches a too high condensing temperature, the controller will give the user early warning through condenser alarm and if temperature rises further, it will switch the compressor OFF. If the temperature measured by the condenser sensor (Sc) is reaching the set “pre-alarm limit” an alarm is raised, but no further action is taken. This is used to indicate to the user that something is wrong with the condenser. Often the reason is that that the air flow to the condenser is restricted (dirt) or because the condenser fan is broken. The alarm will reset if the condenser temperature drops back by 5 °C. If the measured condenser temperature continues to increase and reaches the set “Block limit” the compressor is stopped, and it is restricted from starting again until the alarm is reset manually. The alarm can be reset manually by setting the parameter r12 Main switch to OFF position and back to ON position or by powering the controller down.

Danfoss 80G8375

Temperature Power to compressor

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 8

Danfoss 80G8376

Electronic refrigeration control, type ERC 21X

Figure 6: Compressor protection against high condensing temperature
Sc temperature °C
Block limit

Pre alarm limit Pre alarm OK

Manual reset Sc temperature °C

Compressor

Pre alarm Block alarm

T1 T2

T3 T4

Reference displacement
This feature enable user to toggle between two different set-points quickly by activating a switch on digital input. This provides facility to switch between two storage temperatures without getting in to the menu. For example meat requires different set points than vegetables. The reference displacement signal changes the normal thermostat set-point and the alarm limits by a predefined reference displacement offset value (r40).
Figure 7: Reference displacement

Danfoss 80G8474

Thermostat ref. disp.

High alarm limit

Thermostat ref. disp.

Cabinet temp.

Cut out Low temp. alarm limit Ref. displacement deactivated

Ref. displacement activated

Ref. displacement deactivated

Time
Night mode
Night mode helps to reduce cooling load and thereby power consumption during non-business hours i.e., Night time. The thermostat set point will be offset by a fixed value during night mode keeping alarm limits same.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 9

Electronic refrigeration control, type ERC 21X Figure 8: Night mode

Fan cycling during compressor OFF cycle

During compressor OFF cycle controller will run the fan with defined duty cycle to maintain uniform temperature and delay the need of compressor switching ON.

Figure 9: Fan cycle

Thermostat cut in Cabinet air temp. Thermostat cut out

Fan ON Fan OFF

cycle

cycle

Fan Compressor

Danfoss 80G8475

Defrost on Demand
This feature records the evaporator temperature when it is clean and constantly monitors the compares that at every compressor cut outs. If the evaporator temperature goes below the recorded temperature by the value set in parameter d30 before the configured defrost interval, it will trigger defrost immediately.
· This function can only be used in 1:1 systems. · This function is disabled when the parameter “d30” is set to 20. · Defrost on demand is triggered only if the time since the last defrost session has ended is greater than ¼ of the
defrost interval or 2 hours whichever is lesser. · Defrost doesn’t start by this method during the following scenarios. Pull down mode Night mode Main switch in DI or main switch in Menu is in OFF position Manual control mode Evaporator temperature greater than 0 °C.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 10

Electronic refrigeration control, type ERC 21X

Applications

Pre-defined applications

The purpose of the pre-defined applications is to give the user an easy and fast way to configure the controller to a specific application based on storage temperature (LT, MT, HT), defrost type (none, natural, electrical) and defrost method (terminated on time or temperature).

When user select specific application based on their requirements, the controller will load a specific set of parameter values and will hide parameters that are not relevant for the selected application. Adjustment of the set of parameters value will be still possible at any time.

In addition to pre-defined applications, all controller versions have two standard applications, one with full list of parameters and another with simplified list of parameters, that allows the user to make their own customized parameter settings (AP0 and AP5 in case of ERC 211 and AP0 and AP6 in case of ERC 213 / ERC 214).

ERC 211 controller

Table 1: Pre-defined application table of ERC 211 controller

APP

Description

Temp. range Defrost end

DO1

AI1

DI1(1)

AP0

Fully Configurable Standard Application (Cooling / Heating)

AP1

MT, No defrost

4 ­ 20 °C

NA

Sair

DI1

AP2

MT, Natural defrost

2 ­ 6 °C

Time

Sair

DI1

AP3

MT, Natural defrost, defrost stop by Sair

2 ­ 6 °C

Sair temp

Sair

DI1

AP4

Heating Thermostat

30 ­ 70 °C

NA

AP5

Fully configurable simplified application (Cooling / Heating)

Sair

DI1

(1) The digital inputs DI1 can be configured for multiple functions (refer parameter “o02”).

ERC 213 controller

Table 2: Pre-defined application table of ERC 213 controller

APP Description

Temp. range

Defrost end

DO1

DO2

DO3

AI1

AP0 Fully Configurable Standard Application (Cooling / Heating)

AP1 MT, Natural defrost, Alarm, fan

2 ­ 6 °C By time

Sair

AP2 MT, Electrical defrost, Fan

0 ­ 4 °C By time

Sair

AP3 LT, Electrical defrost, fan

-24 ­ -18 °C By time

Sair

AP4 MT, Electrical defrost, Fan

0 ­ 4 °C

By temp(S5)

Sair

AP5 LT, Electrical defrost, Fan

-26 ­ -20 °C

By temp(S5)

Sair

AP6 Fully configurable simplified application (Cooling / Heating)

AP7 Heating Thermostat

30 ­ 70 °C

NA

Sair

(1) The digital inputs DI1 and DI2 can be configured for multiple functions (refer Parameters “o02” and “o37”).
NC = Not configured

AI2

DI1(1)

DI2(1)

NC

DI1/Sc

DI2

NC

DI1/Sc

DI2

NC

DI1/Sc

DI2

S5

DI1/Sc

DI2

S5

DI1/Sc

DI2

NC

DI1

DI2

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 11

Electronic refrigeration control, type ERC 21X

ERC 214 controller

Table 3: Pre-defined application table of ERC 214 controller

APP Description

Temp. Defrost

range

end

DO1

DO2

DO3

DO4

AI1

AP0 Fully Configurable Standard Application (Cooling / Heating)

AP1 MT, Natural defrost, Alarm, fan

2 ­ 6 °C By time

Sair

AP2 MT, Electrical defrost, Fan

0 ­ 4 °C By time

Sair

AP3 LT, Electrical defrost, fan

-24 ­ -18 °C

By time

Sair

AP4 MT, Electrical defrost, Fan

0 ­ 4 °C

By temp(S5)

Sair

AP5 LT, Electrical defrost, Fan

-26 ­ -20

By

°C temp(S5)

Sair

AP6 Fully configurable simplified application (Cooling / Heating)

AP7 Heating Thermostat

30 ­ 70 °C NA

Sair

AI2

DI1(1)

DI2(1)

NC

DI1/Sc

DI2

NC

DI1/Sc

DI2

NC

DI1/Sc

DI2

S5

DI1/Sc

DI2

S5

DI1/Sc

DI2

NC

DI1

DI2

Danfoss 80G8370

Danfoss 80G8371

(1) The digital inputs DI1 and DI2 can be configured for multiple functions (refer Parameters “o02” and “o37”)
NC = Not configured

Electrical connection diagram
Table 4: Electrical connection diagram
Type
DO1

Connection diagrams

GND TX 15 16

RX +5V 17 18

ERC 211

1 2L

3L 4N 5

6

7

GND

GND

8

9 10 11 12 13 14

Not used

115/ 230V
DO1

115/ 230V
DO2 DO3

Sair

DI/Sc

GND TX 15 16

RX +5V 17 18

ERC 213

1 2L

3L 4N 5

6

7

GND

GND

8

9 10 11 12 13 14

115/ 230V
DO1

Not used

115/ 230V
DO2 DO3 DO4

Sair

S5 Sc/DI1

DI2

GND TX 15 16

RX +5V 17 18

ERC 214

1 2L

3L 4N 5

6

7

GND

GND

8

9 10 11 12 13 14

Not used

115/ 230V

115/ 230V

Sair

S5 Sc/DI1

DI2

Danfoss 80G8372

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 12

Electronic refrigeration control, type ERC 21X
3L, 4N Power supply 115 V AC or 230 V AC (refer to the controller label).
Sair Control Sensor
S5 Defrost (evaporator) sensor
Sc Condenser sensor
DI1 Digital input – configurable to the functions listed under menu code o02.
DI2 Digital input – configurable to the functions listed under menu code o37.
NOTE: 1. Cables for sensors, DI inputs and data communication must be kept separate from other high voltage cables to
avoid electric noises. Use separate cable trays Keep a distance between cables of at least 10 cm Long cables at the DI input should be avoided 2. Do not use excessive force while securing wires in to the connectors, allowed tightening torque and wire sizes are: Power connectors: wire size = 0.5 ­ 1.5 mm2, max. tightening torque = 0.4 Nm Low voltage signal connectors: wire size = 0.15 ­ 1.5 mm2, max. tightening torque = 0.2 Nm 2L and 3L must be connected to the same phase

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 13

Electronic refrigeration control, type ERC 21X

Configuration

Menu navigation and overview
Table 5: Key functions
Scroll up: Short press (less than 1 second) Main switch ON/OFF : Press and hold (~ 3 seconds) Factory reset: Press and hold at Power up Back function : Short press (less than 1 sec.) Pull down start / stop : Press and hold (~3 secs.)
Table 6: Display icons
Night mode (Energy saving)
Compressor running (Flashes in pull-down mode)
Defrost

Scroll down: Short press (Less than 1 sec.) Defrost Start/Stop : Press and hold (~3 secs.) Set point change or OK : Short press (Less than 1 sec.) Enter Menu : Press and hold (~ 3 secs.)
Fan running Active alarm Unit (°C or °F)

Quick configuration at power up
· STEP 1: power on · STEP 2: select the quick configuration menu
Within 30 seconds of power on, press “<” BACK for 3 seconds. The main switch “r12” is automatically set to OFF. · STEP 3: select pre-installed application o61
The display automatically shows the application selection parameter “o61”. Press SET to select the pre-installed application. The display shows the default value (eg. “AP0” flashing). Choose the application type by pressing UP/DOWN and press SET to confirm. The controller presets parameter values according to the selected application and does not hide relevant parameters. Tip: you can easily move from AP0 to AP6, and thus select the simplified list of parameters, by pressing the UP key (circular list). · STEP 4: select sensor type “o06 The display automatically shows sensor selection parameter “o06”. Press SET to select the sensor type. The display shows the default value (eg. “n10” flashing). Choose sensor type by pressing UP/DOWN (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC, Pt1=Pt1000) and press SET to confirm. NOTE: All sensors must be the same type.
· STEP 5: configure DO4 output “o36” The display automatically shows the o36 parameter to configure “DO4” output. (Available only in 4 relays model). Select light “Lig” or alarm “ALA” as per the application and press SET to confirm. The display returns to normal display mode and the control is started.
NOTE: Refer Pre-defined applications for a complete description of the available applications.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 14

Danfoss 80G8452

Electronic refrigeration control, type ERC 21X Figure 10: Configuration

1. Parameter groups

SET: press for 3 seconds to access status, setup and service

Password (if enabled)

Status input Configuration

2. Parameter name SET
Main switch SET
Application

3. Value Application 1-2-3-4-5-6
Application 0

Sensor type

Scroll through the parameter names

DO4 configuration (only for 4 relays model)

Application 1-2-3-4-5-6

Scroll through the parameter groups

Quick configuration via cFg menu
1. Press “SET” button for 3 seconds to access the parameter menu (display will show “cFg”). 2. Enter “CFg” menu by pressing “SET” button (diaplay will show first parameter “r12” main switch. 3. Select “r12” by pressing “SET” button again and set the main switch to “oFF” (r12=0). 4. Press back button (<) to come back to ‘CFg” menu. 5. Press DOWN button to scroll through the “cFg” menu parameter list. 6. Open the “o61 application mode” and select needed application mode (Press SET). 7. Open the “o06 Sensor type” and select the temperature sensor type used (n5=NTC 5 K, n10=NTC 10 K, Ptc=PTC,
Pt1=Pt1000)- (Press “SET”). 8. Open the “o02 DI1 Configuration” and select the function associated to digital input 1 (Press “SET”).

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 15

Electronic refrigeration control, type ERC 21X

9. Open the “o37 DI2 Configuration” and select the function associated to digital input 2 (Press “SET”). 10. Navigate back to parameter “r12 Main switch” and set it in “ON” position to start control. 11. Go through other parameters default settings and change wherever needed

Figure 11: Adjust Setpoint

Danfoss 80G8453

A Short press “SET” button (Setpoint flashes)
B Press UP/DOWN button to change setpoint
A
C Press “SET” button to save the changed setpoint

B

C
Figure 12: Initiate a manual defrost A Press “DEFROST” button for 3 seconds to initiate a defrost (Display shows “-d-” during defrost)
A
B Press “DEFROST” button again for 3 seconds to stop defrost.

Danfoss 80G8454

B

Figure 13: Initiate a pull down

Danfoss 80G8455

A Press “PULL DOWN” button for 3 seconds to initiate pull down

A

(controller displays “Pud” during pull down)

B Press “PULL DOWN” button again for 3 seconds to stop the pull down

B

Figure 14: View active alarm

Danfoss 80G8441

A Temperature and alarm codes alternate flashes until the alarm is resolved. The alarm bell is shown.
A

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 16

Electronic refrigeration control, type ERC 21X

Figure 15: Unloack keyboard

Danfoss 80G8442

A · After 5 minutes of no activity, the keypad is locked (if P76=yes). · When the keypad is locked any button press shows “LoC” in the
A
display. · Press UP and DOWN buttons simultaneously for 3 seconds to unlock
the keyboard. “unl” is displayed for 3 seconds.

Factory resetting

The controller can be set back to factory settings by using the following procedure:

1. Power OFF controller. 2. Keep up “” and down “” arrow buttons pressed while reconnecting the supply voltage. 3. When the code “Fac” is shown in the display, select “yes”.
NOTE: The OEM factory setting will either be the Danfoss factory settings or a user defined factory setting if one has been made. The user can save his setting as OEM factory setting via parameter o67.

Display codes

Table 7: Display codes

Code

Description

-d-

Defrost cycle is in progress

Pud

A temperature pulldown cycle has been initiated

Err

The temperature cannot be displayed due to a sensor error

Shown in top of display: The parameter value has reached max. Limit

Shown in bottom of display: The parameter value has reached min. Limit

Loc

The display keyboard is locked

UnL

The display keyboard has been unlocked

PS

The access code is required to enter the parameter menu

Axx/Exx

Alarm or error code flashing with normal temp. readout

OFF

Control is stopped as r12 Main switch is set OFF

On

Control is started as r12 Main switch is set ON (code shown in 3 seconds)

Fac

The controller is reset to factory setting

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 17

Electronic refrigeration control, type ERC 21X

Parameters

Parameter description

Configuration

Table 8: Configuration

Code Parameter description

Min. Max. Unit

cFg Configuration

r12

Main Switch

With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed.

Service (manual control of outputs allowed)(-1 in Controller Display)

OFF (0 in Controller Display)

ON (1 in Controller Display)

Service ON

o61 Predefined applications

AP0 AP7

Predefined applications is to give the user an easy and fast way to configure the controller. Users can set appropriate applica-

tion that meets their requirements under this menu (please refer predefined applications table under section 2.4 for more

details). Predefined application is protected by main switch.

o07 Select main application type for which controller is used rE= Cooling Ht= Heating

rE

Ht

o06 Sensor type This parameter defines the type of temperature sensors connected to the controller. Below sensor types can be used in ERC21x n5=NTC 5K (5000 Ohm at 25 °C, Beta value=3980 @25/100 °C) n10= NTC 10 (10000 Ohm at 25 °C, Beta value = 3435 @ 25/100 °C) pt1= PT1000 ptc= PTC All the mounted sensors (Sair, S5 and Sc)must be of same type.

n10 pt1

o71 This parameter defines the desired configuration for Relay 2 (DO2) dEF=Defrost ALA=alarm Lig=Light

dEF Lig

o36 This parameter defines the desired configuration for Relay 4 (DO4). Applicable only for ERC214. Lig=Light ALA=alarm

Lig

ALA

Thermostat

Table 9: Thermostat

Code Parameter description

Min. Max. Unit

r–

Thermostat

r00

SetPoint

-100.0 200.0 °C

This parameter defines the desired cabinet temperature at which compressor cuts out. The set point can be locked to a range

within r02 and r03 settings.

r01

Differential

0.1

This defines the difference between the cut-out and the cut-in of compressor relay. Compressor relay will cut-in when the

cabinet temperature reaches the set point+ differetial. In case of heating application, heater will cut-in when the temperature

reaches the set point-differential.

20.0 K

r02

Maximum Set Point limitation

The maximum allowable setpoint value can be configured here that would avoid setting too high values by mistake.

-100.0 200.0 °C

r03

Minimum Set Point limitation

-100.0 200.0 °C

The minimum allowable setpoint value can be configured here that would avoid setting too low values by accident/mistake.

r04

Display offset

-10.0 10.0 K

Correction value in display temperature. If the temperature of the products / cabinet and the temperature received by the

controller are not identical, an offset adjustment of the display temperature can be carried out using this parameter.

r05

Display Unit

-C

-F

Set here if the controller is to show temperature values in °C or in °F. Switching from one to the other will cause all tempera-

ture settings to be automatically updated to respective unit.

r09

Calibration of Sair

-20.0 20.0 K

This parameter is a relative value and allows adjustment of the Sair sensor temperature. For instance, at a measured tempera-

ture of 7 °C and r09 set to 2K, the input from the Sair sensor will be 9 °C instead.

r12

Main Switch

-1

1

With this setting refrigeration can be started, stopped or a manual override of the outputs can be allowed. Stopped refrigera-

tion will give a “OFF” signal on the display.

-1=service (manual control of outputs allowed)

0=OFF

1=ON

r13

Night setback value

-50.0 50.0 K

The thermostat’s reference can be offset by this value during night or when there is no usage. Offset can be set both possitive

and negative sides (Select a negative value if there is to be cold accumulation). Activation can take place via digital input.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 18

Electronic refrigeration control, type ERC 21X

Code Parameter description

Min. Max. Unit

r40

Reference displacement offset temperature

-50.0 20.0 °C

The thermostat setpoint and the alarm values get shifted by this value when the reference displacement is activated. Activa-

tion can take place via digital input.

r96

Pull-down duration

Maximum duration of the pull-down mode. When set as “0” Pull down mode disabled.

0

960 min

r97

Pull-down limit temperature

A safety feature; the lowest temperature allowed during pull-down.

-100.0 200.0 °C

Alarm settings

Table 10: Alarm settings

Code Parameter description

Min. Max. Unit

A–

Alarm settings

A03 Delay for temperature alarm during normal conditions

0

High and low temperature alarm will be delayed by this value after crossing the set alarm limits. The alarm will not become

active until the set time delay has been passed.

240 min

A12 Delay for temperature alarm during pull-down/start-up/defrost

0

Controller uses this time delay to trigger low and high temperature alarms during start-up, defrost and pull-down modes

240 min

A13 High temperature alarm limit

-100.0 200.0 °C

If the cabinet temperature stays above this limit for the time mentioned by the alarm delay parameters, high temperature

alarm is raised.

A14 Low temperature alarm limit If the cabinet temperature stays below this limit for the time mentioned by the alarm delay parameters, low temperature alarm is raised.

-100.0 200.0 °C

A27 DI1 delay If Di1 is configured as a door open alarm or as an external alarm, this delay is used to raise the respective alarm.

0

240 min

A28 DI2 delay If Di2 is configured as a door open alarm or as an external alarm, this delay is used to raise the respective alarm.

0

240 min

A37 Condenser high alarm limit

0

If the condenser temperature reaches above this limit, condenser alarm is raised immediately and no action is taken. The

alarm is reset if temperature falls 5 K below the set temperature.

200 °C

A54 Condenser High block limit

0

If the condenser temperature continues to increase above the A37 limit and reaches this temperature limit, condenser block

alarm is raised and compressor is stopped. It is restricted to starting again until alarm is reset manually. Manual reset of con-

denser block alarm can be performed by power cycling the controller either by main switch button or input supply.

200 °C

A72 Voltage protection

no

YES

This parameter is to enable and disable the voltage protection feature, which protects compressor from adverse line voltage

conditions.

A73 Minimum cut-in voltage

0

When the compressor is due to start, the voltage of the power supply will be checked and the compressor is allowed to start

if the supply voltage is greater than this value.

270 V

A74 Minimum cut-out voltage When the compressor is running, it will be switched OFF if the supply voltage goes below this value.

0

270 V

A75 Maximum voltage When the compressor is running, it will be switched OFF if the supply voltage exceeds this value.

0

270 V

Defrost

Table 11: Defrost

Code Parameter description

Min.

d–

Defrost

d01 Defrost type

no

Selection of desired defrost type

no= No defrost (defrost function diabled)

nAt = Natural defrost (Off cycle defrost)

EL = Electrical defrost

gAS = Hot gas defrost

d02 Defrost stop temperature

0.0

This parameter defines at what temperature the defrost cycle will stop. Defrost can be stoped based on either evaporator

sensor or by the cabinet temperature sensor as defined in menu code d10.

d03 Defrost interval

0

Defines the maximum time period between the start of two defrost cycles. In case of power failure elapsed time is stored in

the memory and next defrost will happen considering the stored time interval.

d04 Maximum defrost time

0

This parameter defines the maximum time defrost will be performed. In case of temperature based defrost this is treated as

safety time to stop the defrost if it is not terminated based on the temperature.

d05 Defrost delay at power up or DI signal

0

This parameter decides the time offset when the defrost is triggered by digital inputs or during power up. This function is

only relevant if you have several refrigeration appliances or groups where you want the defrost to be staggered in relation to

one another.

Max. Unit gAS
50.0 °C 240 hour 480 min 240 min

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 19

Electronic refrigeration control, type ERC 21X

Code d06 d07 d08 d09 d10
d18 d19
d30

Parameter description

Min.

Drip-off time

0

This parameter defines the time delay to start the compressor after defrost heater being switched OFF. This delay is generally

provided to ensure all water droplets on the evaporator drips off before starting the refrigeration cycle.

Fan delay after defrost

0

Defines how long the delay is between the start of the compressor and the fan after defrost cycle. This would help to avoid

hot air circulation in the cabinet imedietely after defrost.

Fan start temperature after defrost This only applies if an evaporator temperature sensor is fitted. This parameter determines at what evaporator temperature the fan will start after a defrost cycle is complete. If the time set in d07 occurs before the temperature set in d08, the fan will start in line with d07. If the temperature set in d08 occurs first, then the fan will start in line with d08.

-50.0

Fan during defrost

OFF

This parameter is to define whether fan is to operate during defrost or not.

Defrost Stop Sensor

non

This parameter is to define which sensor has to be used to exit / terminate the defrost

non = none, defrost is based on time

Air = Sair sensor

dEF = S5 defrost sensor

Compressor accumulated runtime to start defrost

0

When the accumulated compressor runtime is equal to the value set in this Parameter, defrost will be triggered. If the accu-

mulated compressor runtime is less than the set value during the defined defrost interval (d03), defrost will be triggered

based on the defrost interval (d03). This feature is disabled when this parameter is set to zero.

Defrost on demand

0.0

The controller will record S5 temperature during each defrost interval when the evaporator is clean and continue to monitor

S5 temperature. Controller triggers defrost if the S5 temperature becomes less than recorded temperature by this value it will

initiate the defrost on demand. This feature is disabled when this parameter is set to 20. This function can only be used in 1:1

systems.

Defrost delay after pull down

0

This parameter defines the time delay to start the defrost after pull down cycle. This has to ensure defrost doesnot happen

immedietely after pull down cycle.

Max. 60 60 50.0 on dEF
96 20.0
960

Unit min min °C
hour K min

Fan

Table 12: Fan

Code Parameter description

Min. Max. Unit

F–

Fan

F01 Fan control during compressor off cycle This parameter define the fan operation during compressor off cycle. FAo=Fan always ON FFC=Fan follow compressor (Fan is switched off during compressor off cycle) FPL= Fan Cycling

FAo FPL

F04 Fan stop evaporating temperature

-50.0 50.0 °C

This parameter defines the maximum evaporator temperature at which the Fan must switch OFF. If the defrost sensor regis-

ters a higher temperature than the one set here, the fans will be stopped to avoid the warm air circulation in the cabinet.

F07 Fan On cycle

0

This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan ON time will

be as per the time set in this parameter.

180 min

F08 Fan OFF cycle

0

This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan OFF time will

be as per the time set in this parameter.

180 min

Compressor

Table 13: Compressor

Code Parameter description

Min.

c–

Compressor

C01 Compressor minimum ON time

0

This parameter determines the minimum number of minutes the compressor must run before a cut-out can take effect based

on temperature. This is to avoid sudden switching ON and OFF of the compressor. When used for Heating application, sug-

gest to set this value 0 to avoid any overheating.

C02 Compressor minimum OFF time

0

This parameter determines the minimum number of minutes the compressor must switched OFF before a cut-in can take

effect based on temperature. This is to avoid sudden switching OFF and ON of the compressor.

C04 Compressor OFF delay at door open

0

This parameter sets the delay to stop the compressor when the door is opened. If set to 900, the function is disabled.

C70 Zero crossing selection

no

This feature will increase the relay life time, reduce the contact welding and switching noise by switching ON at Zero crossing.

Disable zero crossing when external relay is used.

Max. Unit

30

min

30

min

900 sec YES

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 20

Electronic refrigeration control, type ERC 21X

Miscellaneous

Table 14: Miscellaneous

Code Parameter description

Min.

o–

o01 Delay of outputs at startup

0

After start-up the controller functions can be delayed by the time delay defined here so that overloading of the electricity

supply network is avoided.

o02 Desired configuration for digital input 1 (DI1)

nC

nC= Not configured

Sdc = Status display output

doo = Door alarm with resumption

doA = Door alarm without resumption

SCH = Main switch

nig = Day/Night mode

rFd = Reference displasement

EAL = External alarm

dEF = Defrost

Pud = Pull down

Sc = Condensor Sensor

o03 Serial Address

0

Data communication is possible by using external TTL to RS485 converter

o05 Password

0

If the settings in the controller are to be protected with an access code you can set a numerical value between 0 and 999. You

can cancel the function by setting to 0.

o15 Display Resolution

0.1

This parameter defines the steps in which the temperature must be displayed by 0.1 or 0.5 or 1

o37 Desired configuration for digital input 2 (DI2)

nC

nC= Not configured

Sdc = Status display output

doo = Door alarm with resumption

doA = Door alarm without resumption

SCH = Main switch, nig = Day/ Night mode

rFd = Reference displasement

EAL = External alarm

dEF = Defrost

Pud = Pull down

o38 This defines the method to control cabinet light

on

on= Always on

dAn = Day/Night

doo=Based on door action

o67 Save settings as factory

no

This parameter when set to YES , The current controller Parameter settings are stored as Factory default.

WARNING:

Original factory settings are overwritten

Max. Unit 600 sec Sc
247 No 999 No 1.0 Pud
doo YES

o91 Display during defrost You can set what is to be displayed during defrost here. Air = actual air temperature FrE = freezed temperature (display the temperature just before starting defrost) -d- = -d- is displayed

Air

-d-

P–

P73 DI1 input polarity

no

nc

no (normally open) = associated functionality is activated when DI1 port is short circuit and deactivated when DI1 port is

open circuit.

nc (normally closed) = associated functionality is activated when DI1 port is open circuit and deactivated when DI1 port is

short circuit.

P74 DI2 input polarity

no

nc

no (normally open) = associated functionality is activated when DI2 port is short circuit and deactivated when DI2 port is

open circuit.

nc (normally closed) = associated functionality is activated when DI2 port is open circuit and deactivated when DI2 port is

short circuit.

P75 Invert alarm relay Alarm relay operation can be inverted here 0=normal, 1= invert relay action

0

1

P76 Key board lock enable

no

YES

Setting this parameter as “YES” enables controller keypad lock functionality after 5 minutes of no activity on the keypad.

When the keypad is locked any button press shows “LoC” in the display. Press UP and DOWN buttons simultaneously for 3

seconds to unlock the keyboard. “unl” is displayed for 3 seconds.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 21

Electronic refrigeration control, type ERC 21X

Service

Table 15: Service

Code Parameter description

Min.

u–

Service

u00 Controller Status S0=Cooling ON/Heating ON S2=wait for compressor ON time to elapse S3=wait for compressor OFF time to elapse S4=drip OFF delay after defrost S10=cooling stopped by MainSwitch OFF S11=cooling stopped by thermostat/heating OFF S14=defrosting state S15=fan delay state after defrost S17=door open (DI input) S20=emergency cooling S25=manual control of outputs S30=Pull-down S32=delay of outputs at power up

u01 Temperature measured by Sair sensor

u02 Reference set point used for the control

u09 Temperature measured byevaporator sensor

u10 Status of connected Digital input configured to DI1 Open Close

u13 Shows status of night mode ON or OFF

u37 Status of connected Digital input configured to DI2 Open Close

u29 Temperature measured by condenser Sensor

u58 Status of compressor relay ON/OFF

u59 Status of Fan relay ON/OFF

u60 Status of Defrost relay ON/OFF

u63 Status of Light relay ON/OFF

o23 Relay 1 counter

0

The number of cycles for the DO1 relay can be read in this menu. The read value is multiplied by 100 to obtain the number of

cycles. On reaching 999×100 cycles the counts stops and is reset to 0.

o24 Relay 2 counter

0

The number of cycles for the DO2 relay can be read in this menu. The read value is multiplied by 100 to obtain the number of

cycles. On reaching 999×100 cycles the counts stops and is reset to 0.

o25 Relay 3 counter

0

The number of cycles for the DO3 relay can be read in this menu. The read value is multiplied by 100 to obtain the number of

cycles. On reaching 999×100 cycles the counts stops and is reset to 0.

o26 Relay 4 counter

0

The number of cycles for the DO4 relay can be read in this menu. The read value is multiplied by 100 to obtain the number of

cycles. On reaching 999×100 cycles the counts stops and is reset to 0.”

u80 Firmware version readout

u82 Controller code number

Max. Unit
999 999 999 999

Parameters: ERC 211

Configuration

Table 16: Configuration
Function Configuration Main switch -1=Service, 0=OFF, 1=ON) Predefined applications Cooling/Heating (rE=Cooling, Ht= Heating) Sensor type selection (n5=NTC 5K, n10=NTC10K, ptc=PTC, pt1=PT1000)

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

cFg

r12

-1

1

1

1

1

1

1

1

o61(2)

AP0

AP5

AP0 AP1 AP2 AP3 AP4 AP5

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

Ht(1)

rE

o06(2)

n5

ptc

n10

n10

n10

n10

n10

n10

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 22

Electronic refrigeration control, type ERC 21X

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12″ is set to 0.

Reference

Table 17: Reference
Function Reference Setpoint Differential Maximum set point limitation Minimum set point limitation Display offset Display Unit (°C/ °F) Calibration of Sair Main switch ( -1=Service, 0=OFF, 1=ON) Night Set back Reference displacement offset temperature Pull down duration Pull down limit temperature

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

r–

r00 -100.0 200.0 °C

2.0

8.0

4.0

4.0

50.0

2.0

r01

0.1

20.0

K

2.0

2.0

2.0

2.0

2.0

2.0

r02 -100.0 200.0 °C

50.0 20.0

6.0

6.0

70.0 50.0

r03 -100.0 200.0

°C

-35.0 4.0

2.0

2.0

30.0 -35.0

r04 -10.0 10.0

K

0.0

0.0

0.0

0.0

0.0

0.0

r05

-C

-F

-C

-C

-C

-C

-C

-C

r09 -20.0 20.0

K

0.0

0.0

0.0

0.0

0.0

r12

-1

1

1

1

1

1

1

1

r13 -50.0 50.0

K

0.0

0.0

0.0

0.0

0.0

0.0

r40 -50.0 20.0

°C

0.0

0.0

0.0

0.0

0.0

r96

0

960

min

0

0

0

r97 -100.0 200.0 °C

0.0

0.0

0.0

Alarm

Table 18: Alarm
Function Alarm Delay for temp alarm during normal conditions Delay for temp alarm during pull-down/start up/ defrost High temp. alarm limit Low temp. alarm limit DI1 delay (Time delay for selected DI1 function) Condenser High alarm limit Condenser High block limit Voltage protection enable Minimum cut- in voltage Minimum cut-out voltage Maximum voltage

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

A–

A03

0

240

min

30

45

45

45

10

30

A12

0

240

min

60

60

90

90

NA

60

A13 -100.0 200.0 °C

8.0

16.0 10.0 10.0 80.0

8.0

A14 -100.0 200.0

°C

-30.0 0.0

0.0

0.0

10.0 -30.0

A27

0

240

min

30

30

30

30

30

30

A37

0

200

°C

80

80

80

80

A54

0

200

°C

85

85

85

85

A72

no

YES

no

no

no

no

no

no

A73

0

270

V

0

0

0

0

0

0

A74

0

270

V

0

0

0

0

0

0

A75

0

270

V

270

270

270

270

270

270

Defrost

Table 19: Defrost

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

Defrost

d–

Defrost Method (no=no defrost, nAt=Natural)

d01

no

nAt

nAt

no

nAt

nAt

no

no

Defrost stop temperature.

d02

0.0

50.0

°C

6.0

8.0

6.0

Defrost Interval

d03

0

240 hour 8.0

6.0

6.0

8.0

Max defrost Time

d04

0

480

min

30

45

60

30

Defrost delay at power up (or DI signal)

d05

0

240

min

0

0

0

Drip delay

d06

0

60

min

0

0

0

Defrost stop sensor non=None (Time), Air = Sair temp. Sensor

d10 non

Air

non

non(1)

Air(1)

non

Accumulated Compressor runtime to start defrost (0=OFF)

d18

0

96

hour

0

0

0

Defrost delay after pull down cycle

d30

0

960

min

0

0

0

(1) This option is a default setting in the controller and cannot be changed.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 23

Electronic refrigeration control, type ERC 21X

Compressor

Table 20: Compressor
Function Compressor Compressor minimum ON time Compressor minimum OFF time Compressor OFF delay at open door Zero crossing selection (YES / no)

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

c–

C01

0

30

min

0.0

0.0

0.0

0.0

0.0

0.0

C02

0

30

min

2.0

2.0

2.0

2.0

2.0

2.0

C04

0

900

sec 900.0 900.0 900.0 900.0 900.0 60.0

C70

no

YES

YES

YES

YES

YES

YES

YES(1)

(1) This option is a default setting in the controller and cannot be changed.

Others

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

Others

o–

Delay of outputs at startup

o01

0

600

sec

10

10

10

10

10

10(1)

DI1 configuration

o02

oFF

Sc

nC= Not configured; Sdc = Status display output, doo = Door

alarm with resumption, doA = Door alarm without resumption,

SCH = Main switch, nig = Day/ Night mode, rFd = Reference dis-

plasement, EAL = External alarm, dEF = Defrost, Pud = Pull

down; Sc = Condensor Sensor

oFF

oFF

oFF

oFF

oFF

oFF

Serial address

o03

0

247

No

0

0

0

0

0

Password

o05

0

999

No

0

0

0

0

0

0

Sensor type selection (n5=NTC 5K, n10=NTC10K, ptc=PTC, pt1=PT1000)

o06(2)

n5

ptc

n10

n10

n10

n10

n10

n10

Cooling/Heating (rE=Cooling, Ht= Heating)

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

Ht(1)

rE

Display Resolution

o15

0.1

1.0

0.1

0.1

0.1

0.1

0.1

0.1(1)

Predefined applications

o61(2)

AP0

AP5

AP0 AP1 AP2 AP3 AP4 AP5

Save settings as factory
WARNING:
The earlier factory settings are overwritten

o67

no

YES

no

no

no

no

no

Display during defrost

o91

-d-

Air

Air=actual air temperature, FrE=freezed temperature, -d-=”-d-”

is displayed

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12” is set to 0

-d-

-d-

-d-

-d-(1)

Polarity
Table 21: Polarity
Function Polarity DI1 input polarity (nc/no) no = normally open nc = normally closed Key board lock (no / yes)(0=no, 1=yes)
Parameters: ERC 213
Configuration
Table 22: Configuration
Function Configuration Main switch (-1=Service, 0=OFF, 1=ON) Predefined applications

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5

P–

P73

no

nc

no

no

no

no

no

no

P76

no

YES

no

no

no

no

no

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

cFg

r12

-1

1

1

1

1

1

1

1

1

1

o61(2) AP0

AP7

AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 24

Electronic refrigeration control, type ERC 21X

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Cooling/Heating (rE=Cooling, Ht= Heating)

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

rE(1)

rE(1)

rE

Ht(1)

Sensor type (n5=NTC 5K, n10=NTC10K, ptc=PTC, o06(2) n5

ptc

pt1=PT1000)

n10 n10 n10 n10 n10 n10 n10 n10

DO2 config (dEF=Defrost; ALA=alarm; Lig=Light) o71(2) dEF

Lig

dEF ALA(1) dEF(1) dEF(1) dEF(1) dEF(1) dEF

ALA

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12″ is set to 0.

Reference

Table 23: Reference
Function Reference Setpoint Differential Maximum set point limitation Minimum set point limitation Display offset Display Unit (°C/ °F) Calibration of Sair Main switch ( -1=Service, 0=OFF, 1=ON,) Night Set back Reference displacement offset temperature Pull down duration Pull down limit temperature

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

r–

r00 -100.0 200.0 °C

2.0

4.0

2.0 -20.0 2.0 -24.0 2.0 50.0

r01

0.1 20.0

K

2.0

2.0

2.0

2.0

2.0

2.0

2.0

4.0

r02 -100.0 200.0 °C

50.0 6.0

4.0 -18.0 4.0 -20.0 50.0 70.0

r03 -100.0 200.0 °C -35.0 2.0

0.0 -24.0 0.0 -26.0 -35.0 30.0

r04 -10.0 10.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r05

-C

-F

-C

-C

-C

-C

-C

-C

-C

-C

r09 -20.0 20.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r12

-1

1

1

1

1

1

1

1

1

1

r13 -50.0 50.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r40 -50.0 20.0

°C

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r96

0

960 min

0

0

0

0

0

0

r97 -100.0 200.0 °C

0.0

0.0

0.0

0.0

0.0

0.0

Alarm

Table 24: Alarm

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Alarm

A–

Delay for temp alarm during normal conditions

A03

0

240 min

30

45

30

30

30

30

30

10

Delay for temp alarm during pull-down/start up/ A12

0

240 min

60

90

60

60

60

60

60

defrost

High temp. alarm limit

A13 -100.0 200.0 °C

8.0 10.0 8.0 -15.0 8.0 -15.0 8.0 80.0

Low temp. alarm limit

A14 -100.0 200.0 °C -30.0 0.0 -2.0 -30 -2.0 -30.0 -30.0 20.0

DI1 delay (Time delay for selected DI1 function)

A27

0

240 min

30

30

30

30

30

30

30

30

DI2 delay (Time delay for selected DI2 function)

A28

0

240 min

30

30

30

30

30

30

30

30

Condenser High alarm limit

A37

0

200

°C

80

80

80

80

80

80

Condenser High block limit

A54

0

200

°C

85

85

85

85

85

85

Voltage protection enable

A72

no

YES

no

no

no

no

no

no

no

no

Minimum cut-in voltage

A73

0

270

V

0

0

0

0

0

0

0

0

Minimum cut-out voltage

A74

0

270

V

0

0

0

0

0

0

0

0

Maximum voltage

A75

0

270

V

270 270 270 270 270 270 270 270

Defrost

Table 25: Defrost

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Defrost

d–

Defrost Method (no=None, nAt=Natural, EL = Elec- d01

no

gAS

tric; gAS=Hot gas)

EL

nAt

EL

EL

EL

EL

EL

Defrost stop temperature.

d02

0.0

50.0

°C

6.0

6.0

6.0

6.0

Defrost Interval

d03

0

240 hour

8

6

8

12

8

12

8

Max defrost Time

d04

0

480 min

30

45

15

15

30

30

30

Defrost delay at power up

d05

0

240 min

0

0

0

0

0

0

NA

Drip delay

d06

0

60

min

0

0

0

0

0

0

2(1)

Fan delay after defrost

d07

0

60

min

0

0

0

0

0

0

5(1)

Fan start temperature after defrost

d08 -50.0 50.0

°C

-5.0 50.0(1) 50.0(1) 50.0(1) -5.0

-5.0

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 25

Electronic refrigeration control, type ERC 21X

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Fan during defrost

d09 OFF on

on

on OFF OFF OFF OFF OFF

Defrost stop sensor non=None (Time), Air = Sair temp. sensor, dEF= S5 Defrost sensor

d10 non dEF

non non(1) non(1) non(1) dEF(1) dEF(1) non

Accumulated Compressor runtime to start defrost d18

0

96 hour

0

0

0

0

0

0

(0=OFF)

Defrost on demand (20=OFF)

d19 0.0 20.0

K

20.0 20.0(1) 20.0(1) 20.0(1) 20.0 20.0

Defrost delay after pull down cycle

d30

0

960 min

0

0

0

0

0

0

(1) This option is a default setting in the controller and cannot be changed.

Fan control

Table 26: Fan control

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Fan control

F–

Fan at compressor cutout (FAo=Fan always ON;

F01 Fao FPL

FFC=Fan follow compressor; FPL= Fan Pulsating)

FAo FAo FAo FAo FAo FAo FAo FAo

Fan stop evap. Temperature

F04 -50.0 50.0

°C

50.0

50.0 50.0 50.0

Fan ON Cycle

F07

0

180 min

2

2

2

2

2

2(1)

2

2

Fan OFF cycle

F08

0

180 min

2

2

2

2

2

2(1)

2

2

(1) This option is a default setting in the controller and cannot be changed.

Compressor

Table 27: Compressor
Function Compressor Compressor / Heater minimum ON time Compressor /Heater minimum OFF time Compressor OFF delay at open door Zero crossing selection (YES / no)

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

c–

C01

0

30

min

0

0

0

0

0

0

0

0

C02

0

30

min

2

2

2

2

2

2

2

2

C04

0

900

Sec

900

900

900

900

900

900

60(1)

900

C70

no

YES

YES

YES

YES

YES

YES

YES YES(1) YES

(1) This option is a default setting in the controller and cannot be changed.

Others

Table 28: Others

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Others

o–

Delay of outputs at startup

o01

0

600 sec

10

10

10

10

10

10

10(1)

10

DI1 configuration

o02

nC

Sc

nC= Not configured; Sdc = Status display output,

doo = Door alarm with resumption, doA = Door

alarm without resumption, SCH = Main switch, nig

= Day/ Night mode, rFd = Reference displasement,

EAL = External alarm, dEF = Defrost, Pud = Pull

down; Sc = Condensor Sensor

nC

nC

nC

nC

nC

nC

nC

nC

Serial address

o03

0

247 No

0

0

0

0

0

0

0

Password

o05

0

999 No

0

0

0

0

0

0

0

0

Sensor type (n5=NTC 5K, n10=NTC10K, ptc=PTC, o06(2) n5

ptc

pt1=PT1000)

n10 n10 n10 n10 n10 n10 n10 n10

Cooling/Heating (rE=Cooling, Ht= Heating)

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

rE(1)

rE(1)

rE

Ht(1)

Display Resolution

o15

0.1

1.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1(1)

0.1

DI2 configuration

o37

nC

Pud

nC= Not configured; Sdc = Status display output,

doo = Door alarm with resumption, doA = Door

alarm without resumption, SCH = Main switch, nig

= Day/Night mode, rFd = Reference displasement,

EAL = External alarm, dEF = Defrost, Pud = Pull

down

nC

nC

nC

nC

nC

nC

nC

nC

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 26

Electronic refrigeration control, type ERC 21X

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Light Control

o38

on

doo

on= Always on, dAn = Day/Night, doo=Based on

door action

on

on

on

on

on

on

on

on

Predefined applications

o61(2) AP0

AP7

AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Save settings as factory
NOTE:
The earlier factory settings are overwritten

o67

no

YES

no

no

no

no

no

no

no

DO2 config dEF=Defrost; ALA=alarm; Lig=Light

o71(2) dEF

Lig

Display during defrost

o91 Air

-d-

Air=actual air temperature, FrE=freezed tempera-

ture, -d-=”-d-” is displayed

dEF ALA(1) dEF(1) dEF(1) dEF(1) dEF(1) dEF

ALA

-d-

-d-

-d-

-d-

-d-

-d-

-d-(1)

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12” is set to 0.

Polarity

Table 29: Polarity

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Polarity

P–

DI1 input polarity (nc/no) no = normally open nc = normally closed

P73

no

nc

no

no

no

no

no

no

no

no

DI2 input polarity (nc/no) no = normally open nc = normally closed

P74

no

nc

no

no

no

no

no

no

no

no

Invert alarm relay (0= normal, 1= invert relay ac-

P75

0

1

tion)

0

0

0

0

0

0

0

Key board lock (no / yes)(0=no, 1=yes)

P76

no

YES

no

no

no

no

no

no

no

Parameters: ERC 214

Configuration

Table 30: Configuration

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Configuration

cFg

Main switch (-1=Service, 0=OFF, 1=ON)

r12

-1

1

1

1

1

1

1

1

1

1

Predefined applications

o61(2) AP0

AP7

AP0 AP1 AP2 AP3 AP4 AP4 AP6 AP7

Cooling/Heating (rE=Cooling, Ht= Heating)

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

rE(1)

rE(1)

rE

Ht(1)

Sensor type selection (n5=NTC 5K, n10=NTC10K, o06(2) n10 pt1 ptc=PTC, pt1=PT1000)

n10 n10 n10 n10 n10 n10 n10 n10

DO2 config (dEF=Defrost; ALA=alarm; Lig=Light) o71(2) dEF

Lig

dEF ALA(1) dEF(1) dEF(1) dEF(1) dEF(1) dEF ALA(1)

DO4 config (Lig=Light, ALA=Alarm)

o36(2)

Lig

ALA

Lig

Lig

Lig

Lig

Lig

Lig

Lig

Lig

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12” is set to 0.

Reference
Table 31: Reference
Function Reference Setpoint Differential Maximum set point limitation Minimum set point limitation Display offset Display Unit (°C/ °F) Calibration of Sair

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

r–

r00 -100.0 200.0 °C

2.0

4.0

2.0 -20.0 2.0 -24.0 2.0 50.0

r01

0.1 20.0

K

2.0

2.0

2.0

2.0

2.0

2.0

2.0

4.0

r02 -100.0 200.0 °C

50.0 6.0

4.0 -18.0 4.0 -20.0 50.0 70.0

r03 -100.0 200.0 °C -35.0 2.0

0.0 -24.0 0.0 -26.0 -35.0 30.0

r04 -10.0 10.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r05

-C

-F

-C

-C

-C

-C

-C

-C

-C

-C

r09 -20.0 20.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 27

Electronic refrigeration control, type ERC 21X

Function Main switch ( -1=Service, 0=OFF, 1=ON,) Night Set back Reference displacement offset temperature Pull down duration Pull down limit temperature

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

r12

-1

1

1

1

1

1

1

1

1

1

r13 -50.0 50.0

K

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r40 -50.0 20.0

°C

0.0

0.0

0.0

0.0

0.0

0.0

0.0

r96

0

960 min

0

0

0

0

0

0

r97 -100.0 200.0 °C

0.0

0.0

0.0

0.0

0.0

0.0

Alarm

Table 32: Alarm

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Alarm

A–

Delay for temp alarm during normal conditions

A03

0

240 min

30

45

30

30

30

30

30

10

Delay for temp alarm during pull-down/start up/ A12

0

240 min

60

90

60

60

60

60

60

defrost

High temp. alarm limit

A13 -100.0 200.0 °C

8.0 10.0 8.0 -15.0 8.0 -15.0 8.0 80.0

Low temp. alarm limit

A14 -100.0 200.0 °C -30.0 0.0 -2.0 -30.0 -2.0 -30.0 -30.0 20.0

DI1 delay (Time delay for selected DI1 function)

A27

0

240 min

30

30

30

30

30

30

30

30

DI2 delay (Time delay for selected DI2 function)

A28

0

240 min

30

30

30

30

30

30

30

30

Condenser High alarm limit

A37

0

200

°C

80

80

80

80

80

80

Condenser High block limit

A54

0

200

°C

85

85

85

85

85

85

Voltage protection

A72

no

YES

no

no

no

no

no

no

no

no

Minimum cut-in voltage

A73

0

270

V

0

0

0

0

0

0

0

0

Minimum cut-out voltage

A74

0

270

V

0

0

0

0

0

0

0

0

Maximum voltage

A75

0

270

V

270 270 270 270 270 270 270 270

Defrost

Table 33: Defrost

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Defrost

d–

Defrost Method (no=None, nAt=Natural, EL = Elec- d01

no

gAS

tric; gAS=Hot gas)

EL

nAt

EL

EL

EL

EL

EL

Defrost stop temperature.

d02

0.0

50.0

°C

6.0

6.0

6.0

6.0

Defrost Interval

d03

0

240 hour

8

6

8

12

8

12

8

Max defrost Time

d04

0

480 min

30

45

15

15

30

30

30

Defrost delay at power up (or DI signal)

d05

0

240 min

0

0

0

0

0

0

Drip delay

d06

0

60

min

0

0

0

0

0

0

2(1)

Fan delay after defrost

d07

0

60

min

0

0

0

0

0

0

5(1)

Fan start temperature after defrost

d08 -50.0 50.0

°C

-5.0 50.0(1) 50.0(1) 50.0(1) -5.0

-5.0

NA

Fan during defrost

d09 OFF on

on

on OFF OFF OFF OFF OFF

Defrost stop sensor

d10 non dEF

non non(1) non(1) non(1) dEF(1) dEF(1) non

Accumulated Compressor runtime to start defrost d18

0

96 hour

0

0

0

0

0

0

(0=OFF)

Defrost on demand (20=OFF)

d19 0.0 20.0

K

20.0

20.0 20.0

Defrost delay after pull down cycle

d30

0

960 min

0

0

0

0

0

0

(1) This option is a default setting in the controller and cannot be changed.

Fan control

Table 34: Fan control
Function Fan control Fan at compressor cutout Fan stop evap. Temperature Fan ON Cycle Fan OFF cycle

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

F–

F01 FAo FPL

FAo FAo FAo FAo FAo FAo FAo FAo

F04 -50.0 50.0

°C

50.0

50.0 50.0 50.0(1)

F07

0

180 min

2

2

2

2

2

2

2(1)

2

F08

0

180 min

2

2

2

2

2

2

2(1)

2

(1) This option is a default setting in the controller and cannot be changed.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 28

Electronic refrigeration control, type ERC 21X

Compressor

Table 35: Compressor
Function Compressor Compressor minimum ON time Compressor minimum OFF time Compressor /Heater OFF delay at open door Zero crossing selection (YES / NO)

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

c–

C01

0

30

min

0

0

0

0

0

0

0

0

C02

0

30

min

2

2

2

2

2

2

2

2

C04

0

900 Secs 900 900 900 900 900 900 60(1) 900

C70

no

YES

YES

YES

YES

YES

YES

YES YES(1) YES

(1) This option is a default setting in the controller and cannot be changed.

Others

Table 36: Others

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Others

o–

Delay of outputs at startup

o01

0

600 sec

10

10

10

10

10

10

10(1)

10

DI1 configuration

o02

nC

Sc

nC= Not configured; Sdc = Status display output,

doo = Door alarm with resumption, doA = Door

alarm without resumption, SCH = Main switch, nig

= Day/ Night mode, rFd = Reference displasement ,

EAL = External alarm, dEF = Defrost, Pud = Pull

down; Sc = Condensor Sensor

nC

nC

nC

nC

nC

nC

nC

nC

Serial address

o03

0

247 No

0

0

0

0

0

0

0.0

Password

o05

0

999 No

0

0

0

0

0

0

0

0

Sensor type selection (n5=NTC 5K, n10=NTC10K, o06(2) n10 ptc ptc=PTC, pt1=PT1000)

n10 n10 n10 n10 n10 n10 n10 n10

Cooling/Heating (rE=Cooling, Ht= Heating)

o07(2)

rE

Ht

rE

rE(1)

rE(1)

rE(1)

rE(1)

rE(1)

rE

Ht(1)

Display Resolution

o15

0.1

1.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1(1)

0.1

DO4 config (Lig=Light, ALA=Alarm)

o36(2)

Lig

ALA

Lig

Lig

Lig

Lig

Lig

Lig

Lig

Lig

DI2 configuration

o37

nC

Pud

nC= Not configured; Sdc = Status display output,

doo = Door alarm with resumption, doA = Door

alarm without resumption, SCH = Main switch, nig

= Day/ Night mode, rFd = Reference displasement ,

EAL = External alarm, dEF = Defrost, Pud = Pull

down

nC

nC

nC

nC

nC

nC

nC

nC

Light Control

o38

on

doo

on= Always on, dAn = Day/Night, doo=Based on

door action

on

on

on

on

on

on

on

on

Predefined applications

o61(2) AP0

AP7

AP0 AP1 AP2 AP3 AP4 AP4 AP6 AP7

Save settings as factory

o67

no

YES

no

no

no

no

no

no

no

DO2 config (dEF=Defrost; ALA=alarm; Lig=Light) o71(2) dEF

Lig

dEF ALA(1) dEF(1) dEF(1) dEF(1) dEF(1) dEF ALA(1)

Display during defrost

o91 Air

-d-

-d-

-d-

-d-

-d-

-d-

-d-

-d-(1)

(1) This option is a default setting in the controller and cannot be changed. (2) This parameter can only be set when regulation is stopped, i.e. “r12” is set to 0

Polarity

Table 37: Polarity

Function

Code Min. Max. Unit AP0 AP1 AP2 AP3 AP4 AP5 AP6 AP7

Polarity

P–

DI1 input polarity (nc/no) no = normally open nc = normally closed

P73

no

nc

no

no

no

no

no

no

no

no

DI2 input polarity (nc/no) no = normally open nc = normally closed

P74

no

nc

no

no

no

no

no

no

no

no

Invert alarm relay (0= normal, 1= invert relay ac-

P75

0

1

tion)

0

0

0

0

0

0

0.0

Key board lock (no / yes)(0=no, 1=yes)

P76

no

YES

no

no

no

no

no

no

no

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 29

Electronic refrigeration control, type ERC 21X

Alarm code

In an alarm situation the display will alternate between readout of the actual air temperature and readout of the alarm codes of active alarms. Various alarm codes and their descriptions are as below.

Table 38: Alarm codes
Code Alarms E29 Sair sensor error E27 Def sensor error E30 Sc sensor error A01 High temp alarm A02 Low temp alarm A99 High Volt alarm AA1 Low Volt alarm A61 Condenser alarm A80 Cond. block alarm A04 Door alarm A15 DI Alarm A45 Standby Alarm

Description Air temperature sensor is defect or electrical connection is lost S5 Evaporator sensor is defect or electrical connection is lost Sc Condenser sensor is defect or electrical connection is lost Air temperature in cabinet is too high Air temperature in cabinet is too low Supply voltage is too high (compressor protection) Supply voltage is too low (compressor protection) Condenser temp. too high – check air flow Condenser temp. too high – manual reset of alarm required(1) Door has been open for too long External alarm from DI input Control has been stopped by “r12 Main switch”

(1) The condenser block alarm can be reset by setting r12 Main switch OFF and ON again or by powering down the controller.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 30

Electronic refrigeration control, type ERC 21X

Product specification

Technical specification

Table 39: Technical specification

Features

Description

Purpose of control

Operating temperature sensing control suitable for incorporation into commercial air-conditioning and refrigeration applications

Construction of control

Incorporated control

Power supply

115 V AC / 230 V AC 50/60 Hz, galvanic isolated low voltage regulated power supply

Rated power

Less than 0.7 W

Inputs

Sensor inputs, Digital inputs, Programming key Connected to SELV limited energy <15 W

Allowed sensor types

NTC 5000 Ohm at 25 °C, (Beta value=3980 at 25/100 °C – EKS 211) NTC 10000 Ohm at 25 °C, (Beta value=3435 at 25/85 °C – EKS 221) PTC 990 Ohm at 25 °C, (EKS 111) Pt1000, (AKS 11, AKS 12, AKS 21)

Sensors included in kit Solution

NTC 10000 Ohm at 25 °C, cable length: 1.5 m

Accuracy

Measuring range: -40 ­ 105 °C (-40 ­ 221 °F)

Controller accuracy: ±1 K below -35 °C, ±0.5 K between -35 ­ 25 °C ±1 K above 25 °C

Type of action

1B (relay)

Output

DO1 – Relay 1: 16 A, 16 (16) A, EN 60730-1 10 FLA / 60 LRA at 230 V, UL60730-1 16 FLA / 72 LRA at 115 V, UL60730-1

DO2 – Relay 2: 8 A, 2 FLA / 12 LRA, UL60730-1 8 A, 2 (2 A), EN60730-1

DO3 – Relay 3: 3 A, 2 FLA / 12 LRA, UL60730-1 3 A, 2 (2 A), EN60730-1

DO4 – Relay 4: 2 A

Display

LED display, 3 digits, decimal point and multi-function icons, °C + °F scale

Operating conditions

-10 ­ +55 °C (14 ­ 131 °F), 90% Rh

Storage conditions

-40 ­ +70 °C (-40 ­ +158 °F), 90% Rh

Protection

Front: IP65 (Gasket integrated) Rear: IP00

Environmental

Pollution degree II, non-condensing

Overvoltage category

II – 230 V supply version – (ENEC, UL recognized) III – 115 V supply version – (UL recognized)

Resistance to heat and fire

UL94-V0 Temperature for ball pressure test statement According to Annex G (EN 60730-1)

EMC category

Emission: IEC/EN 61000 6-3, Immunity: IEC/EN 61000 6-2

Mounting

Figure 16: Mounting

Figure 17: Dismounting

Danfoss 80G8391 Danfoss 80G8392

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 31

36 28
Danfoss 80G8390

Electronic refrigeration control, type ERC 21X
Installation steps
· Place the wired controller in the slot and ensure rubber sealing is resting properly on the mounting surface. · Slide the mounting clips along the rails of the rear plastic from the rear side of the panel. · Slide the clips towards mounting surface until controller is firmly fixed. · To remove the controller, one needs to skillfully unlatch the snapping tab and pull the clips backwards.
Dimensions
Figure 18: Dimensions (mm)
71
29

61.2

Drilling template

83

66

Rear mounting (lock with clips)

Accessories

KoolKey (EKA200)

KoolKey acts as a gateway to connect PC tool KoolProg and also a programming key.

Figure 19: KoolKey (EKA 200) as gateway
D C

Danfoss 80G8259

A Standard Micro-USB cable B KoolKey C Interface cable D Controller

A

B

C

Figure 20: KoolKey (EKA 200) as programming key

A

B

C

Danfoss 80G8274

A Koolkey B Interface cable C Controller

Refer to the KoolKey installation guide for detailed instructions.
Mass Programming Key (EKA 201)
Mass Programming Key is a simple programming key for programming the controller in production assembly line.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 32

Electronic refrigeration control, type ERC 21X Figure 21: Mass Programming Key (EKA 201)
A B C

Danfoss 80G8276

A EKA 201 B Interface cable C Controller

Refer to the EKA 201 installation guide for detailed instructions.

Bluetooth Adapter (EKA 202 & EKA 203)

Bluetooth Adapter: external plug-in type module that provides wireless connectivity with Danfoss mobile application “KoolConnect”.

Figure 22: Bluetooth Adapter (EKA 202 & EKA 203)
A
B

A Bluetooth adapter B Interface cable C Controller

Danfoss 80G8316

C

Refer to the EKA 202/203 installation guide for detailed instructions.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 33

Electronic refrigeration control, type ERC 21X

Ordering

Table 40: ERC 21X controllers

Type

Description

ERC 211 ERC 211, Red LED, 115 V – Kit

ERC 211, Red LED, 230 V – Kit

ERC 211, Controller, Red LED, 230 V

ERC 211, Controller, Red LED, 230 V, I-Pack

ERC 213 ERC 213, Red LED, 230 V – Kit

ERC 213, Controller, Red LED, 230 V

ERC 213, Controller, Red LED, 230 V, I-Pack

ERC 213 Red, 115 V USA – Kit

ERC 213 Red, 230 V USA – Kit

ERC 214 ERC 214, Controller, Red LED, 115 V – Kit

ERC 214, Controller, Red LED, 230 V – Kit

Table 41: Programming tools and other accessories

Type

Description

EKA 200 KoolKey – Gateway cum Programming key

EKA 201 Mass Programming Key

BLE Adapter Without RTC power back up

With RTC power back up

Interface cable Interface cable for ERC 21x, 1 m Interface cable for ERC 21x, 0.5 m

Table 42: Sensors

Type

Sensor element

Sensor housing

EKS 211 NTC 5000 ohm / 25 °C (Beta =3980 at 25/100 °C) Thermo plastic polyester 8×30

Thermo plastic polyester 8×30

Thermo plastic polyester 8×30

Thermo plastic polyester 8×30

EKS 221 NTC 10000 ohm / 25 °C (Beta =3435 at 25/85 °C) Thermo plastic rubber 6x5x15

Thermo plastic rubber 6x5x15

Thermo plastic rubber 6x5x15

Thermo plastic rubber 6x5x15

Stainless steel 6×20

EKS 111 PTC 990 ohm / 25 °C

Stainless steel 6×30

Stainless steel 6×30

Stainless steel 6×30

Stainless steel 6×30

Stainless steel 6×30

Stainless steel 6×30

Stainless steel 6×30

AKS 11 PT1000

Top part: PPO (Noryl)

Bottom: stainless steel

Top part: PPO (Noryl)

Bottom: stainless steel

Top part: PPO (Noryl)

Bottom: stainless steel

AKS 12 PT1000

Stainless steel 6×40

Stainless steel 6×40

Stainless steel 6×40

Stainless steel 6×40

NOTE: All the mounted sensors must be of same type.

© Danfoss | Climate Solutions | 2024.01

Relay 1 1 1 1 3 3 3 3 3 4 4

Qty.

Code no.

1

080G3451

1

080G3453

1

080G3454

30

080G3459

1

080G3457

1

080G3458

30

080G3460

1

080G3467

1

080G3469

1

080G3466

1

080G3463

Qty. 1 1
Single pack 54
Single pack 54 1 1

Code no. 080N0020 080N0021 080N0022 080N0026 080N0023 080N0027 080N0326 080N0327

Cable 1.5 m 3.5 m 1.5 m 3.5 m 3.5 m 3.5 m 8.5 m 8.5 m 1.5 m 1.5 m 1.5 m 3.5 m 3.5 m 6 m 6 m 8.5 m 3.5 m
5.5 m
8.5 m
1.5 m 1.5 m 3.5 m 5.5 m

Qty.

Code no.

150

084B4403

75

084B4404

1

084N1220

1

084N1221

150

084N3206

1

084N3210

50

084N3208

1

084N3209

150

084N3200

1

084N1178

150

084N1161

1

084N1179

150

084N1163

1

084N1180

80

084N1173

60

084N1168

1

084N0003

1

084N0005

1

084N0008

1

084N0036

30

084N0035

30

084N0039

30

084N0038

BC194286421698en-001002 | 34

Electronic refrigeration control, type ERC 21X

Certificates, declarations, and approvals

The list contains all certificates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Certificates, declarations, and approvals

Table 43: Certificates, declarations, and approvals

Regulatory and Compliance

Directive / Document topic

Electrical Safety (Incorporated Control Low Voltage Directive: 2014/35/EU for use in Class I or Class II equipment)

Electrical Safety (control is validated to use as Incorporated)
Electrical Safety (control is validated to use as Incorporated)
Electrical Safety (Incorporated Control for use in Class I or Class II equipment)
Electrical Safety & Electromagnetic Compatibility

Recoganized Component
Recoganized Component

Supplier Declaration of Conformity (SDoC)

Elelctrical Safety Electromagnetic Compatibility

Certification of Conformity (CoC) EMC Directive: 2014/30/EU

RoHS
Food Safety Approved for use in Flammable Refrigerants

RoHS Directive: 2011/65/EU & 2015/863/EU
Food Equipment
Enclosed Break Device / sealed device nC (Relays)

Approved for use in Flammable Refrig- Enclosed Break Device (Relays) erants

Enclosure Material Flammable Class –
HACCP, Temperature Measuring probe in compliance with EN13485 Class I, when used with AKS 12 sensor
Certification and Manufacturer Declara- CE, CURUS, CQC, UA, EAC, NSF, RoHS tions on Conformity

Standards
EN IEC 60730-2-9:2019, EN IEC 60730-2-9:2019/A1:2019, EN IEC 60730-2-9:2019/A2:2020, EN 60730-1:2016, EN 60730-1:2016/A1:2019, EN 60730-1:2016/A2:2022
UL 60730-1 – 2009 – Revision 2014, UL 60730-2-9 : 2010, Revision : 2013
CSA E60730-1 :2013, CSA E60730-2-9 : 2001, Revision : 2008, AMD 1
GB 14536.1:2008, GB 14536.10:2008

Country – Marking Europe – CE
United States – CURUS Canada – CURUS China – CQC

EN 60730-1:2016, EN 60730 2-9:2019, EN 610006-2:2005 & EN 61000-6-3:2007+A1:2011
CU TR 004/2011
EN 610006-2:2005 & EN 61000-6-3:2007+A1:2011
EN IEC 63000:2018

Ukraine – UA
Eurasia – EAC Europe – CE Europe – CE

NSF/ANSI standard 2

United States

Sealed Device “nC” IEC 600079-15:2017, Europe Enclosed-Break device “dC” IEC 60079-1:2014, clause 15.5.3

Sealed device “nC” UL 60079-15 and US and Canada CAN/CSA C22.2 No. 60079-15, EnclosedBreak device “dC” IEC 60079-1:2014, clause 15.5.3

UL 94, V-0

US

EN 13485:2001

Europe

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 35

Online support
Danfoss offers a wide range of support along with our products, including digital product information, software, mobile apps, and expert guidance. See the possibilities below.
The Danfoss Product Store The Danfoss Product Store is your one-stop shop for everything product related–no matter where you are in the world or what area of the cooling industry you work in. Get quick access to essential information like product specs, code numbers, technical documentation, certifications, accessories, and more. Start browsing at store.danfoss.com.
Find technical documentation Find the technical documentation you need to get your project up and running. Get direct access to our official collection of data sheets, certificates and declarations, manuals and guides, 3D models and drawings, case stories, brochures, and much more.
Start searching now at www.danfoss.com/en/service-and-support/documentation.
Danfoss Learning Danfoss Learning is a free online learning platform. It features courses and materials specifically designed to help engineers, installers, service technicians, and wholesalers better understand the products, applications, industry topics, and trends that will help you do your job better.
Create your Danfoss Learning account for free at www.danfoss.com/en/service- and-support/learning.
Get local information and support Local Danfoss websites are the main sources for help and information about our company and products. Find product availability, get the latest regional news, or connect with a nearby expert–all in your own language.
Find your local Danfoss website here: www.danfoss.com/en/choose-region.

© Danfoss | Climate Solutions | 2024.01

BC194286421698en-001002 | 36

References

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>

Related Manuals