SANHUA SEC Series EEV Controller Instruction Manual

SEC series EEV Controller
Manual/Installation Instructions

SEC Series EEV Controller

CAUTIONS

1. This product may cause an electric shock in handling. Please do not attempt to open it with power turned on.

2. This product should be installed in a place fixed secured by a rack or panel.

3. This product can be used under the following environmental conditions:
   • Indoor
   • Pollution Degree 2
   • At an altitude of 2000m or below

4.  Power input must be within the designated ranges.

5. To turn on or turn off power supply for this product, please use the circuit breaker or switch of a standard product of IEC 60947-1 or IEC 60947-3 product and install it within a close distance allowing convenient operation by user provided.

6. An output wire to be used for this product should be inflammable grade FV1(v-1 grade or above). The thickness of the wire should 0.08mm²~1.3 mm²

7. In order to prevent it from an inductive noise, please maintain the high-voltage wire and power wire separated.

8. Please avoid installing the product in a place where a strong magnetism, noise, severe vibration and impact exist.

9. When extending the sensor wire, use a shield wire and do not extend it unnecessary long.

10. The sensor wire and signal wire should be away from the power and load wires using conduits separately installed.

11. Please avoid using the product near a device generating strong high frequency noise (high frequency welding machine, high-frequency sewing machine, high-frequency radiotelegraph, high capacity SCR controller)

Basic specifications

24Vdc+10%/-15% (SEC611 & SEC612)
Class II
Power consumption| 15VA with Sanhua EEV at 24VDC
Connection| Pluggable terminal: Screw M2 Min/Max wire diameter: 0.08²~1.3 mm² XHP terminal
Input| Pressure sensor
Temperature sensor
RUN signal Passive switch signal
Output| Relay output 30Vdc/5A
EEV (uni-polar) output
Communication| RS 485
Operation| -30~55 oC, Humidity≤95%RH
Storage| -30~55 oC, Humidity≤95%RH
Protection level| IP20

Installation Notes

a. DIN slide rail mounting
Mount the controller on the DIN rail by the snap on the back of the controller.
Installed in the electric control cabinet to avoid moisture and dust.

b. Sensors installation
Pressure transmitter / temperature sensor installed on the tube of evapora tor outlet. If the system is divided into several eva porators, install pressure transmitter / temperature sensor at each evaporator outlet.

We recommend to install the temperature and pressure sensors within 0.5m from the evaporator to prevent ambient temperature and pressure drop interference for the superheat calculation.

Wire Connections

Pluggable
terminal| Power supply| 24Vac/Vdc| +24V| AC24V / DC24V+
-24V| AC24V / DC24V-
Compressor signal
and comm port| RUN| GND| Passive swithcing signal, open or close synchronously with the compressor, close when using manual mode
S/W
RS485| GND| GND
B-| TRX-(B)
A+| TRX+(A)
Auxiliary relay output| AUX-RLY| N.O.| Normally Open contact
COM| Common
N.C.| Normally Open contact
XIIP
terminal| Pressure sensor| P-SENS| Vcc| Power: YCQB: +5V
(RED) YCQC: 10-30Vdc
Si| Si YCQB: 0.5-3.5V
(White) YCQC: 4-20mA
GND| GND YCQB: GND
(Black) YCQC: N/A
Temp. sensor| T-SENS| S2| NTCSK/B3970
GND
EEV output| EEV MOTOR| A
B
A
B
COM

Safety Tips:

1. Do not turn on the power before completing the wiring, cut off the power before changing the wiring.
2. The RUN port (compressor signal) is a passive port. If add a voltage it may cause the controller burn out.
3. Ultracapacitor please series connected to the power supply wire. (Coming soon)
4. If you use a transformer, please ensure the minimum power is 15 VA (for 1 controller + 1 EEV).
5. Min/max wire diameter: 0.2 ~1.3 mm²
6. 24Vdc or 24Vac for SEC611, 24Vdc only for SEC612.

DIP SW Setting

All DIP switches are OFF in default mode (suitable for most applications). There are 4 DIP switches, 2, 3 used as a group for selecting EEV type, 1, 4 used as a group for selecting controller operating mode.

a. EEV type selecting
EEV total steps, excitation speed and excitation mode is determined by the DIP SW2, 3

(Default mode)
DIP SW2: OFF, DIP SW3: OFF
1-2 phase, 500 steps, 30pps

DIP SW2: OFF, DIP SW3: ON
2phase, 2000 steps, 100PPS

DIP SW2: ON, DIP SW3: ON
Custom mode, set by parameter table 3

b. Control method selecting
Control method determined by the DIP SW1, 4

– Superheat control (Default mode)
–  Temp./pressure signal ensures system SH stable|
| –  DIP SW1: ON, DIP SW4: OFF
–  Manual operation
–  Use Button directly controls the valve opening ratio|
| –  DIP SW1: ON, DIP SW4: ON
–  Drive mode
–  Use 4-20mA or 1-5Vanalog signal control|
| –  DIP SW1: OFF, DIP SW4: ON
– Hot gas bypass (temperature control)|

Note:

1. While using the manual /drive mode, keep the compressor RUN signal always ON.
2. n drive mode, external 4-20mA or 1-5V analog signal is input through the pressure sensor port.

Buttons and operation

a. Screen introduction

| Lighting when alarming
| Flickering at communication mode
POWER| Lighting at power up
TX,RX| Flickering at communication

Use button can switch the display on screen among superheat/ pressure/valve opening/temperature (current display is indicated by the cursor pointer)

b. Buttons introduction

|  Enter the parameter setting interface / return parameter list
---|---
|  Switch screen display parameters, increase/decrease parameters
|  Confirm key, parameter switch in parameter table, long press save parameter

c. Set/change parameters

1. During operating status, long press for more than 3s, enter parameter setting mode
2. When screen show , press until screen display 5 (original password), then press enter parameters table list
3. means parameters table1, press can select or (switching parameter table)
4. After selected parameters table, press enter the table, if you want to switch other parameter tables, press return to the parameter table select list
5. In parameters table, screen will directly display the parameter code, press can switch the code in parameters table
6. When the screen displays the parameter code which you want to modify, press can modify parameters directly, and press will turn to next parameter or press return to the parameter table select list
7. After finish modifying, long press for 3s will save all settings and return to the operating interface.

d. Main parameter setting
1. Refrigerant selection
Refrigerant data is in

Now 26 kinds refrigerants is available in controller as below:

2. Target superheat setting
Target superheat is in

Add.

| Code| Description|

Default

---|---|---|---
40001| | Target superheat| 6

If the target SH is too small, may cause liquid hammer in compressor; if the target value is too large, the evaporator energy efficiency will be very low.
3. Start open ratio and duration time
You can find it in

When controller receives compressor RUN signal, EEV will keep the start opening ratio for the duration time.
4. Pump down function

__

| Select pump down function and delay time| -1(OFF)
40026| __| Pressure set-point for stopping pump down| 0.5

If 40025 value is not -1, pump down function is ON RUN signal = ON => Compressor is ON
RUN signal = OFF (need main controller to cut off) => EEV will close
when low pressure = 40026 bar or delay time = 40025 seconds, the Output Relay changes its position and will inform to cut Off the compressor
5. Reset to factory settings

__ Reset is in menu, use to find the parameter , input backup-password 913 and long press , all parameters reset to the default from factory

Alarm mode

Code

| Description| Code|

Description

---|---|---|---
| RUN signal disconnected| | MOP high pressure alarm
| Pressure transmitter disconnected| | LOP Low pressure alarm
| Pressure transmitter short circuit| | High superheat alarm
| Temperature sensor disconnected| | Low superheat alarm
| Temperature sensor short circuit| | Low temperature freezing alarm
| | | Supply voltage out of tolerance

Note StP is not alarm, just reminding the compressor RUN signal is disconnected. Alarm manual reset button is on side face of SEC (EEV driver) shell.

Parameters Table

1. Refrigerant data is in

Add.| Description| Code| Unit| Step| Min.| Max.| Default
---|---|---|---|---|---|---|---
40001| Superheat set point| | K| 0.1| 0.5| 30| 6
40003| Start open ratio| | %| 1| 0| 100| 0
40004| Start open ratio duration time| | Sec| 1| 0| 600| 0
40005| P: Proportional gain| | %| 0.1| 0.1| 99.9| 3
40006| I: Integral time| | Sec| 1| 0| 999| 20
40007| D: Derivative time| | Sec| 1| 0| 999| 4
40008| Low SH alarm mode| | 0=No use 1=automatic return 2=manual return| 1
40009| Low SH alarm value| | K| 0.1| 0.5| 30| 0.5
40010| Low SH alarm delay time| | Sec| 1| 1| 300| 15
40011| Clear low SH alarm| | K| 0.1| 1| 30.5| 3
40012| MOP alarm mode| | 0=No use 1=automatic return 2=manual return| 1
40013| MOP alarm pressure| | bar| 0.1| -1| 50| 9
40014| MOP alarm delay time| | Min| 1| 1| 15| 1
40015| Clear MOP alarm|        | bar| 0.1| -1| 50| 8
40016| High SH alarm mode| | 0=No use 1=automatic return 2=manual return| 0
40017| High SH alarm value| | K| 1| 10| 40| 30
40018| High SH alarm delay time| | Min| 1| 1| 600| 3
40019| Clear high SH alarm| | K| 0.1| 7| 37| 27
40021| Freeze prevention alarm mode| | 0=No use 1=automatic return 2=manual return| 0
40022| Freeze prevention alarm value| | oC| 1| -40| 40| 0
40023| Freeze prevention alarm delay time| | Sec| 1| 5| 200| 30
40024| Clear freeze prevention alarm| | oC| 1| -37| 43| 3
40025| Select pump down function and delay time| | Sec| 1| 0| 180| -1(OFF)
40026| Pressure set-point for stopping pump down| | bar| 0.1| -0.5| 18| 0.5
40027| Pressure low limit alarm mode| | 0=No use 1=automatic return 2=manual return| 0
40028| Pressure low limit alarm value| | bar| 0.1| -0.8| 17.7| 0
40029| Low limit pressure alarm delay time| | Sec| 1| 5| 200| 5
40030| Clear low limit pressure alarm| | bar| 0.1| -0.5| 18| 0.3

1) Alarm setting
When alarm setting is ON, if system pressure/temperature exceeds/below the set alarm value and keep more than the delay time, the controller will generate an alarm and act accordingly
2. (Parameters Table2)

Add.| Description| Code| Unit| Step| Min.| Max.| Default
---|---|---|---|---|---|---|---
40061| Password| | /| 1| 0| 999| 5
40062| Refrigerant| | 0=R22   1=R404A   2=R410A   3=R134a   4=R407C|
40062| Refrigerant| | 5=R507 6=R1234ze 7=R1234yf   8=R290   9=R450A|
40062| Refrigerant| | 10=R513A   11=R448A   12=R449A   13=R452A
14=R744(CO2)   15=R744(N20)   16=R32   17=R245fa| 0
40062| Refrigerant| | 18=R23   19=R407A   20=R407F   21=R124   22=R717|
40062| Refrigerant| | 23=R407H   24=R454C   25=R455A|
40063| Pressure sensor MAX. range| | bar| 1| 0| 99| 12(Current) 20(Voltage)
40064| Pressure sensor MIN. range| | bar| 1| -1| 99| -1(Current) 0(S Voltage)
40065| Pressure sensor offset correction| | K| 0.1| -9.9| 9.9| 0
40066| Temp. sensor offset correction| | K| 0.1| -20| 19.9| 0
40069| Jerk control ratio| | | 0.1| 0.1| 100| 100
40070| EEV open ratio upper limit| | %| 1| 0| 100| 100
40071| EEV open ratio lower limit| | %| 1| 0| 100| 0
40072| Sensor input filter time| | /| 0.1| 1| 99.9| 1
40073| EEV compulsory open ratio| | %| 0.1| 0| 100| OFF(-1)
40076| Display mode| | 0=1~4 rotation / 1= Superheat
2=Evaporator outlet pressure / 3= Expansion valve open ratio
4= Evaporator outlet temperature / 5= Saturation temperature| 1
40077| Run/stop method| | 0= Always run / 1= Digital input 2= Communication Run| 1
40078| CommunicationID setup| | /| 1| 1| 254| 1
40079| Communication speed setup| | 48(0)=4800| 96(1)=9600   192(2)=19200 384(3)=38400| 96
| Reset| | /| 1| 0| 999| 0

1. set to password value (default 5), and then long press the controller will factory reset.

3. (Parameters Table3)

Add.| Description| Code| Unit| Step| Min.| Max.| Default
---|---|---|---|---|---|---|---
40041| Hold current| | 0=OFF| 1=ON| 0
40042| Expansion valve excitation type| | 1-2(0)=1-2 phase excitation| 2(1)=2 phase excitation| 1-2
40043| Expansion valve total pulse| | pulse| 1| 10| 999| 50
40044| Expansion valve open pulse| | pulse| 1| 0| 999| 30
40045| EEV drive speed (PPS)| | 10(0)=10PPS   20(1)=20PPS   30(2)=30PPS
50(3)=50PPS   80(4)=80PPS   100(5)=100PPS
200(6)=200PPS   250(7)=250PPS   500(8)=500PPS|

30(2)

1.  Parameter Table 3 is usually not use, SANHUA standard EEV can directly set by the DIP SW.
   If you want modify parameters table 3, please change DIP SW first. (See page

2. Because the controller screen display maximum value is 999, so 40043 EEV total steps pulse 50 means 500 steps.

Communication Protocol

a. Specification

b. Status of Communication table

Copyright © SANHUA 2022
II-SEC61-EN-R2201
Subject to change without notice

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