Sub-Zero CRC-2020, User Manual

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19
Sr.
No.
Parameter setting method
Description of parameters and functions.
Parameter
LED TEMP
LED
To change PDIS parameter,
press the SET key.
PDIS
Parameter Function : To set display at power OFF
mode.
Use UP/DOWN keys to set desired value.
At power OFF mode power OFF LED
will glow & display will be as below,
LED : Display Will be Blank.
OFF : Display will show OFF.
TEMP : Display will show Temperature.
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32
Range
Min Max
Fact. Set
Range
Min Max Fact. Set
MODE, press power switch again for 2
seconds. All leds and display will flash and
enter into NORMAL WORKING MODE.
NO YES NO
To change FS parameter,
press the SET key.
FS
Parameter Function : To restore default settings of
the controller.
Use UP/DOWN keys to set desired value.
When set to YES all parameters
are programmed to factory
values.
Useful to debug setting related
problems.
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33
Range
Min Max
Fact. Set
Range
Min Max
Fact. Set
EP
Parameter
Once the set key is pressed, the
controller goes into the normal mode
and displays the Room Temperature and
all settings are recorded.
34
Function: To exit programming.
To exit programming
parameter, press the SET key.
20 CRC-2020
Technical Data
Housing : Plastic / Sheet Metal (as per customer
requirement)
Dimensions : Plastic : (H)400 x (W) 300 x (D)135 mm
Sheet Metal : (H)450 x (W) 400 x (D)200 mm
Mounting : Wall mounting.
Connection : Spring clamp terminal block.
4 sq. mm wire.
Display : 4 Digit, 1” Dot matrix Display and 8 LEDs for
indication.
Data Storage : Non-Volatile EEPROM Memory.
Power Input (Options) : /-10%, 50-60Hz.
3Phase Supply with Neutral
0 0
Operating Temp : 5 C to 50 C(non-condensing).
0 0
Storage temp : -20 C to 70 C(non-condensing).
Output :
5A/230vac
5A/230vac
Light Relay : 5A/230Vac.
Alarm Relay : 5A/230Vac.
Sensors :
1) Temperature sensor:
0
Resolution : 0.1 C.
0
Accuracy : +/-1 C.
0 0
Probe Tolerance at 25 C : +/-0.3 C.
0 0
Range : -50.0 C to 50.0 C.
Analog I/p:
Compressor current (R,Y,B)
Resolution
: 0.1Amp.
Accuracy : +/-1 Amp.
Digital Inputs:
HP, LP, Auxillary, Door, Sppr, OPS, R-Ph, Y-Ph, B- Ph.
Buzzer : Internal
RS485 Connectivity : Modbus RTU Protocol
Baud Rate : 9600
Device ID : 1 (By Default)
Compressor Relay :
Evap. Relay :
Sensor Type : NTC Thermistor.
CRC-2020