NordCap ST200 Cooling Zone Controller Instruction Manual

NordCap ST200 Cooling Zone Controller

Programming instructions circuit diagram

 Product and programming description

Cooling zone controller ST200

Circuit diagram

Product description

The ST200 cooling zone controller is used for thermostatic temperature control. The controller can be supplied with 100..240 V AC 50/60 Hz and has five output relays that can be freely programmed for controlling a compressor, evaporator fan, lighting or other necessary outputs. It is operated either directly on the box or via a separate, connectable display. The controller has a three-digit display and three control buttons. Parameterisation is handled in different operating levels in which access becomes increasingly difficult for security reasons. The controller is networked by means of an ST bus or Modbus interface respectively.

• Sensors: Pt100, Pt1000, PTC
• Connector: WAGO connector + spring loaded terminals

CONTROL BUTTONS

Button 1: UP

Pressing this button increases the parameter or parameter value. Pressing the button for 10 seconds triggers an unscheduled defrosting of the refrigeration system.

Button 2: DOWN

Pressing this button decreases the parameter or parameter value.

Button 3: SET

Pressing the SET button displays the set-point value. Pressing the button for 10 seconds switches the controller to stand by mode. The refrigeration controller is generally operated with the buttons UP and DOWN and SET. The default display shows the temperature of the cooling chamber (actual temperature value. When the SET button is pressed, the display changes to the cooling chamber temperature desired by the user (set-point temperature value. It is only possible to change the set-point temperature value by simultaneously pressing the SET and UP or alternatively SET
und DOWN buttons. While pressing the buttons, you can read the changed set- point value in the display. After changing the set-point temperature value and releasing the buttons, the actual temperature value appears in the display again. This is the standard value setting method.

SETTING THE MAIN SET POINT VALUE

Pressing the SET button will show the set-point value in the display. If the set point value needs to be changed, the SET button must remain pressed for the duration of the setting, while the UP or DOWN buttons are used to set the desired value. After selecting the setting, the UP or DOWN button must always be released first and then the SET button. You will notice that the set-point value can only be changed within the set-point value limits that have been set.

PARAMETERISATION

Parameterisation of the cooling zone controller is carried out at the factory or by specialists when a cooling system is put into operation. Incorrect or improper parameterisation can lead to malfunctions and thus to damage to the refrigerated product. The parameters can only be set by means of one or more passwords. Parameterisation can be carried out at any time. The regulation is not interrupted by the parameterisation, but it can directly affect it. If no button is pressed for 2 minutes, then the process is aborted and the actual value is shown again. Parameterisation can be accessed by simultaneously pressing the UP and DOWN buttons. After approximately 3 seconds, the code word appears in the display. By pressing the UP or DOWN button respectively, you can change between the code words. All other settings or default values in the parameterisation level are carried out using the general method for setting values, in other words by simultaneously pressing the SET and UP or DOWN buttons. You can use the UP and DOWN buttons to scroll within the parameter group or to change individual parameter values using the standard value setting method. By pressing the UP and DOWN buttons simultaneously, it is possible to exit a parameter group and return to the list of parameter groups. It is possible to exit from the list of parameter groups into the default level by simultaneously pressing the UP and DOWN buttons. A special case is blocking a specific parameter group with a password. In this case  just as when entering the parameterisation level – you are first of all expected to input a specific password for the parameter group.

USER LEVEL

By selecting the code word US and entering the password 19 you will directly reach a list with predefined parameters.

operation

| b60|

Digital input E1

F5| Speed of evaporator fan during defrosting| d0| Type of defrosting
F50| PID function mode| d1| Defrosting interval
F62| Shut-off delay, comp. fan| d2| Defrosting time limit
H11| Calibration, sensor F1| d8| Draining time
H13| Sensor type F1| d11| Sensor for actual value, evaporator
H16| Calibration, sensor F2| d13| End of defrosting
H18| Sensor type F2| d20| Function end condition
H21| Calibration, sensor F3|

d21

| Sensor for actual value – end condition
H23| Sensor type F3| 11| Frame heater cycle behaviour
J12| Display language| J13| Units °C / °F

ALARMS

After selecting a parameter group, it is normally sufficient to press the SET button  appears in the display) and then release the button. After this, the first parameter of the parameter group appears for example in parameter group A, the parameter A0. You can use the UP and DOWN buttons to scroll within the parameter group or to change individual parameter values using the standard value setting method. By pressing the UP and DOWN buttons simultaneously, it is possible to exit a parameter group and return to the list of parameter groups. It is possible to exit from the list of parameter groups to the default level by simultaneously pressing the UP and DOWN buttons. A special case is blocking a specific parameter group with a password. In this case – just as when entering the parameterisation level – you are first of all expected to input a specific password for the parameter group.

Adr NETWORK ADDRESS

The possibility of setting a network address is found under the code wordAdr. This is mandatory when starting up networked systems.
The address of the responsible controller is found under .

Overview of the software function

Parameter levels

Alarms

Keys and switch inputs Control loop 1
Defrost Control loop 1

Fan Control loop 1

• L-Networking and display
• n- Switching cycles
• o- Special functions
• P- RPS level
• t- Operating times
• Network regulation

Relay contacts and lamps

Parameter

USEREBENE / USER LEVEL

Para meter|

Description of function

| Einstellbereich

Setting range

| Wert

value

---|---|---|---
J1| | 0 … 5| 1

Networking and display

Para meter| Funktionsbeschreibung

Description of function

|

Setting range

| Wert

value

---|---|---|---
L0|

Own address in ST bus 1

| 1..250| 1

Keys and switch inputs

Para meter|

Description of function

|

Setting range

|

value

---|---|---|---
b60|

Entrance E1

| Disabled| 0

Control circuit 1

Parameter| Description of function|

Setting range

|

value

---|---|---|---
c13|

Setpoint limitation

| – 199,0 °C…C14| 2°C
c14|

Setpoint limitation

| C13… 199,0°C| 15°C
c21|

Actual value sensor selection

| F01

F02

F03

F04

F05

F06

VF1

VF2

VF3

VF4

| 1
c25| Hysterese ZP1| 0,1..100,0 °C| 2,0°C

Defrosting control circuit 1

Para meter|

Description of function

|

Setting range

|

value

---|---|---|---
d0|

Type of defrost circuit 1

| No defrost

Compressor off

Electric heating

Hot gas

| 1
d1|

Defrost interval

| No defrost after time interval

Defrost interval

| 3h
d2|

Defrost time limit

| 1..99 min| 60min
d8|  Draining time| 0..15 min| 0min
d11|

Actual value  evaporator circuit

| inactive

F01

F02

F03

F04

F05

F06

VF1

VF2

VF3

VF4

| 2
d13|

Stop at defrost temperature

| -199,0°C..999,0°C| 6,0°C
d20|

Function condition 2

| | 0
d22| | F01

F02

F03

F04

F05

F06

VF1

VF2

VF3

VF4

| 0

Fan control circuit 1

Para meter|

Description of function

|

Setting range

|

value

---|---|---|---
F1|  height 510-540 mm| 0,0..100,0 %| __

__

55%

80%

85%

F5| height 510-540 m| 0,0..100,0 %| __

55%

80%

85%

F50|

Condenser 1 mode

| Disabled

| 2
F62|

Fan switch-off delay

| 0..999 s| 120s

Temperature sensors

Para meter|

Description of function

|

Setting range

|

value

---|---|---|---
H11|

Offset correction sensor F1

| -15,0…+15,0 K C| -2,0°C
H13| | Disabled

PTC (KTY81-121) (°C)

Pt1000 (2-Leiter) (°C)

Pt100 (2-Leiter) (°C)

| 2
H16|

Offset correction sensor F2

| -15,0…+15,0 K| 0,0K
H18| | Disabled

PTC (KTY81-121) (°C)

Pt1000 (2-Leiter) (°C)

Pt100 (2-Leiter) (°C)

| 2
H21|

Offset correction sensor F3

| -15,0…+15,0 K| 0,0K
H23|

Sensor selection F3

| Disabled

PTC (KTY81-121) (°C)

Pt1000 (2-Leiter) (°C)

Pt100 (2-Leiter) (°C)

| 0

Special functions

Para- meter|

Description of function

|

Setting range

|

value

---|---|---|---
011|

Door frame heating day

| 0..100,0 %| 50,0%

Relay contacts and lamps

Para meter|

Description of function

|

Setting range

|

value

---|---|---|---
U4|

Function relay contact K4

|

__

Alarm/Warning

A1L

A1H

A2L

A2H

Buzzer

| 9
---|---|---|---
U4| Function relay contact K4| Deactivated (relay OFF

Relay ON no protection times

| 9
|

| Circuit 1 (C) shut-off valve 1 [0/1] Defrosting 1 (d) or hot gas1 [0/1]

__

Evaporator 1 (F)

evaporator 1 level 1 0/1, PWM

Cooling network (Y) Condenser F condenser level 1 0/1, PWM

Accessories

• Light 1 0/1
• Door frame heater1 0/1, PWM 10: Drip tray heater 1 0/1

Alarm/Warning

• A1L
• A1H
• A2L
• A2H
• Collective warning
• Collective warning inverted.
• Collective fault.
• Collective fault inverted 19:
• Buzzer horn with quit

|
---|---|---|---
U5|

Function relay contact K4

| s

| 4
|

Set point

| U14| 4

PAL LEVEL

J12|

Display in standby mode

| Disabled

OFF

AUS

DP rechts

| 1
---|---|---|---
J13|

Display 1 unit

| 0: °C

1: °F

| 0

Status displays and error messages

by time
Sr2| Service interval 2 (see t30, t31 and t40 … t42)| Warning messages 2 by time
Sr3| Service interval 3 (see t30, t31 and t45 … t47)| Warning messages 3 by time
Sr4| Service interval 4 (see t30, t31 and t50 … t52)| Warning messages 4 by time

Errors EP0 and EP1 block the controller. The controller will only be enabled after the error has been remedied. Error EP0 and EP2 can only be remedied by repair. The errors are displayed alternately with the current measured temperature

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