Sub-Zero CRC-2052 User Manual

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Page 1

COLD ROOM CONTROLLER

USER MANUAL

www.subzero.co

INDIA

CRC-2052

Page 2

Index Index

CRC-2052 CRC-2052

Index Index

Introduction

Get to Know Your Controller

LED Indication.

Parameter List.

To set the quick freeze set point.

To set the Condenser set point.

To set cut out point of the controller for Humidity.

QFS

CSET

HSET

Key Introduction

Fault Messages.

DESCRIPTION

PARAMETER

Pg. No.

To set the cut-out point of the controller.

SET POINT

DESCRIPTION

PARAMETER

Pg. No.

To set other parameter

To set allowable high temperature limit.

To set allowable low temperature limit.

To set the differential for compressor restart.

To set probe calibration.P5

To set time delay between relay restart time.

12-13

To set duration of defrost.P7

To set defrost frequency.

To set power on defrost delay.

To set type of defrost.

To set drip time for defrost.

To set defrost stop temperature.

To set type of computation for defrost time.

P10

P11

P13

P12

14-15

To enable or disable humidity sensing. RH

To set allowable high humidity limit.H2

To set allowable low humidity limit.H3

To set differential (Hysterisis) for humidity.

To set probe calibration for humidity.

To set time delay between relay restart time for humidity.

To set quick freeze duration.

To set condenser logic.

To set condenser differential.

To set condenser probe calibration.

To set condenser on delay time.

To set condenser status at hot gas defrost.

To set Evaporator Fan stop temperature.

To set Evaporator Restart Delay.

To set Evaporator Fan status at compressor off.

To set Evaporator Fan differential.

To set Evaporator probe calibration.

QFD

CND3

CND4

CND5

CND6

CND7

To set Evaporator Fan status at Door open condition.

To enable / disable buzzer.BUZ

This parameter is used to set power on delay for alarm.

Under load limit for compressor current.C-UL

Over load limit for compressor current.C-OL

Under load limit for Heater / Solenoid.D-UL

23-24

Items Included.

To set Evap Fan status during defrost.L8

EXIT End of set mode

Page 3

Current sensing delay.

Introduction

Features:

CRC-2052

Index

CRC-2052

Index

DESCRIPTION

PARAMETER

Pg. No.

To enable or Disable HP sensing.

To enable or disable LP sensing.

Fault sensing logic.

To set LP sensing delay.

To set reset mode for HP fault.

To set Compressor Relay status on Probe Failure.

To set On cycle at room probe fail.

To set Off cycle at room probe fail.

To set Display at defrosting.

Defrost duration during Coil probe failure.

TON

TOFF

To set time delay to switch off the light .

To activate Solenoid Valve relay.

To change password.

To view Compressor run Hours.

Clear Compressor Run Hours.

To set Unit ID.

PDN

CRH

CCRH

To activate Keypad Lock.

To enable/disable Power Switch.

To set display at power OFF mode.

PDIS

To restore default settings of the controller.

End of programming.

Technical Data

32-33

Caution & Warranty

34-35

Suggested Connection Diagram

The CRC-2052 is single set point cold room controller. The Sub-Zero CRC-2052 is aesthetically superior versions of their predecessors.

A number of parameters are displayed alphanumerically to set up the instrument for each specific function.

The controller controls the defrost in the system based on either an electrical heater where the compressor is stopped, or at cycle inversion using warm gas where the compressor keeps on working.

There are safety features which include shutting down the system incase of a fault from a pressure control or similar device.

A series of “safety controls” (delay at start-up, minimum disable time, minimum time between activation) protects the compressors from close starts. In case of probe error or temperature alarm, the instrument signals the event through acoustic signal and by closing the relay contact. By pressing the mute key, the buzzer is silenced.

Computer Connectivity over RS485 and Remote monitoring(Optional).

Single Operation Quick Freeze Mode(Press QF Key for 2 sec), set system in quick freeze mode which is time based for that period new set point will be lower than running set point and system will try to achieve that set point, after time period over set point will be normal set point.

Over load limit for Heater/Solenoid.D-OL

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Key Introduction

PRG

Amp

PROBE

Used to switch OFF/ON the controller.

Used to come mute the buzzer/Alarm & to exit any mode.

Used to increment/scroll in Program Mode. When not in any mode if this key is pressed for 2 secs controller will enter in display Probe mode where Condenser/Evap temperature & RH can be viewed.

PRG

PROBE

Fault Log

Used to enter into the Set mode. Also used as enter key if controller is in Set mode/program mode.

Used to enter in manual defrost and to stop defrost if defrosting is ON.

Used to enter in fault log mode.

Used to enter in quick freeze mode.

Used to decrement/scroll in Program mode. Used to enter into the program mode.

Used to enter in display Amp. mode where compressor and defrost current can be viewed.

Used to switch OFF/ON the light.

CRC-2052

Get to Know Your Controller

Items included

NO.

QTY

ITEMS

CONTROLLER

CATALOGUE

NTC SENSOR 5 METER

8 X 38 SCREW WITH RAWL PLUG

CRC-2052

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LED Indication

Messages Mode Discription

Comp. Relay On. Comp. Relay Off. Comp. Relay Timedelay.

Cond. Relay On. Cond. Relay Off.

Evap. Relay On. Evap. Relay Off. Evap. Relay Timedelay.

Defrost Relay On. Defrost Relay Off. Defrost Relay Timedelay.

LSV Relay On. LSV Relay Off.

Alarm Relay On. Alarm Relay Off.

Controller is in drip time.

Humidifier On. Humidifier Off. Humidifier is in Timedelay.

Controller is in . Controller is not in quick freeze mode.

quick freeze mode

Power Off. Power On.

Light Relay On. Light Relay Off.

R-phase present. R-phase absent.

Y-phase present. Y-phase absent.

B-phase present. B-phase absent.

Flashing

On Off Flashing

On Off

On Off Flashing

On Off

On Off Flashing

On Off

Off On

On Off

Controller is in emergency stop mode. Controller is not in emergency stop mode.

Emergency

Stop

High temperature alarm for Room means, room temperature is equal or above the set value of P2 parameter.

Low temperature alarm for Room means, room temperature is equal or below the set value of P3 parameter. High humidity alarm means, humidity is above the set value of H2 parameter.

equal or

Low humidity alarm Means humidity is above the set value of H3 parameter.

equal or

Room temperature fail means, Room sensor not connected or out of range.

Condenser temperature fail means, condenser sensor not connected or out of range.

C-PP

Evaporator temperature fail means, Evaporator sensor not connected or out of range.

Humidity fail means, Humidity sensor not connected or out of value.

SPPR Fault.

E-PP

H-PP

Compressor over load fault.

SPPR

C-OL

Compressor under load fault.

C-UL

Defrost over load fault.

D-OL

Fault Messages :

HP fault.

Auxiliary fault.

LP fault.

AUX

Defrost under load fault.

D-UL

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Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

HSET Function :

controller for Humidity.

To set cut out point of the

Use UP/DOWN keys to set desired value.

Example : If this parameter is set to 70 then humidifier will be off at this humidity .

To change EXIT parameter, press the set key.

H3+1%

H2-1%

70%

Range

Min Max

Fact. Set

P2 Parameter

Function : To set allowable high temperature limit.

To change P2 parameter,

press the set key.

Use UP/DOWN key to set desired value.

Example : Setting this parameter

at 30.0 C will not allow the set point to go

above 30.0 C also if the temperature

reaches 30.0 C, the display will show HT (High Temperature). The alarm will be ON. But at power on till the AL delay is over controller will not generate HT Alarm.

Once set at a particular value, this will not allow the set point to go above this value and below P3 setting.

To set other parameter

Press & hold PRG key for 2 seconds

Display will show ‘P2’ and scroll the description of the parameter. To go to other parameters , use up / down keys.

SP+0.5ºC

50.0ºC 50.0ºC

Range

Min Max

Fact. Set

PRG

(Message on Display)

Min: MINIMUM Max : MAXIMUM Fact. Set : FACTORY SETTING(DEFAULT)

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

To set other parameter

Press & hold SET key for 2 seconds

Display will show ‘SET’ and scroll the description of the parameter.

To go to other parameters, use up / down keys.

SP To set the cut-out point of the controller.

Display will change to set value. The set point value can now be changed by using the UP/DOWN key. After desired value, press the SET key & you will see “-- ” which confirms that the set point has been stored in memory.

To change Set Point parameter, press the set key.

QFS

P2-0.5ºC

0ºC

Range

Min Max

Fact. Set

QFS To set the quick freeze set point.

Use UP/DOWN keys to set desired value.

If controller is in quick freeze mode then compressor will cut in/ cut out as per this set point till the quick freeze duration is over.

SP : Set Point.

To change QFS parameter, press the set key.

-50.0ºC

-5.0ºC

Range

Min Max

Fact. Set

CSET To set the Condenser set point.

Use UP/DOWN keys to set desired value.

If condenser logic is set to SP then condenser will switch off at this set point.

To change CSET parameter, press the set key.

0.0ºC

99.9ºC

20.0ºC

Range

Min Max

Fact. Set

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EXIT

End of set mode

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Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

P6 Parameter

Use UP/DOWN keys to set desired value.

Example :

This parameter is used to protect the fan from restarting in a short period of time and can be set between 0 to 20 minutes.

If this parameter is set at 3 minutes, the compressor will cut off at the set temperature, but will not restart for a minimum of 3 minutes, even if the differential is achieved earlier. This

To change P6 press the set key.

parameter,

Function : To set time delay between relay restart time.

1 Min 20 Min 3 Min

Range

Min Max

Fact. Set

P5 Parameter

Use UP/DOWN keys to set desired value.

Example :

In time it may be possible that the display may be offset by a degree or so. To compensate for this error, you may need to add or minus the degrees required to achieve the correct temperature.

The temperature on the

display is 28.0 C, whereas the actual

temperature is 30.0 C. You will need to

set this parameter to 2.0 C, which means that once out of the programming parameter, the display will show the

O O O

temperature 30.0 C (28.0 C + 2.0 C).

To change P5 press the set key.

parameter,

Function : To set probe calibration.

-10.0ºC 10.0ºC 0.0ºC

Range

Min Max

Fact. Set

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

P3 Parameter

Function : To set allowable low temperature limit.

Use UP/DOWN key to set desired value.

Example : Setting this parameter at

-30.0 C will not allow the set point to go

below -30.0 C also if the temperature

reaches -30.0 C, the display will show LT (Low Temperature). The alarm will be ON.

Once set at a particular value, this will not allow the set point to go below this value and above P2 setting.

To change parameter, press the set key.

-50.0ºC

SP-0.5ºC

-50.0ºC

Range

Min Max

Fact. Set

(Message on Display)

Use UP/DOWN keys to set desired value.

Example(Cooling Mode) : If the set

point is set at 10.0 C and differential is

set at 2.0 C, then when the system

reaches 10.0 C, the comp. relay will

cutout. Since the differential is 2.0 C, the

comp. Relay will cutin at 12.0 C

0 0

(10.0 C + 2.0 C).

P4 Parameter

Function : To set the differential for compressor restart.

To change P4 press the set key.

parameter,

0.5ºC 20.0ºC 2.0ºC

Range

Min Max

Fact. Set

parameter is good to protect the life of the compressor when there are power fluctuations and the compressor is switched off and on within a few seconds.

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

P7 Parameter

Function : To set duration of defrost.

To change the P7 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

0 Min 99 Min 30 Min

Range

Min Max

Fact. Set

This is maximum amount of time allowed for defrost. If set to 0, there will be no defrost cycle.

Example : If P7 is set to 15 Mins and P8 parameter is set to 1 Hr. then after every 1 Hr defrosting will take place for 15 mins.

P8 Parameter

Function : To set defrost frequency.

To change the P8 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

1 Hr 31 Hrs 6 Hr

Range

Min Max

Fact. Set

This is the amount of time between two defrost cycles.

Example : same as P7 parameter.

P9 Parameter

Function : To set power on defrost delay.

To change the P9 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

0 Min 99 Min 30 Min

Range

Min Max

Fact. Set

This is the amount of time at power on after which defrosting will take place once.

Example : If P9 parameter is 30 mins then at power after 30 mins defrosting will take place once.

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

P10 Parameter

Function : To set type of defrost.

To change the P10 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

HTR HTG HTR

Range

Min Max

Fact. Set

HTR : Heater defrost where compressor is OFF. HTG : Hot Gas defrost where compressor is ON.

P11 Parameter

Function : To set drip time for defrost.

To change the P11 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

0 Min 30 Min 1 Min

Range

Min Max

Fact. Set

During this period Compressor, Evaporator Fan, LSV relay and Heater will stay off so that the defrost water can drain out.

P12 Parameter

Function : To set type of computation for defrost time..

To change the P9 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

REAL CRH REAL

Range

Min Max

Fact. Set

REAL = Total of real time. Example : This means that the time

calculation for defrost frequency will be for the total hours the unit has been running.

CRH - Sum of total compressor operating times. This means that for

time calculation, the unit will add the total time the compressor has been in an ON mode. It keeps a record of the hours worked +/-½ Hour incase of a power failure.

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Example : If Defrost frequency is set to

6hrs. and 3.45 hrs have passed after unit has started and power fails, then defrost cycle will stat after 3½ hours when power resumes.

P13 Parameter

Function : To set defrost stop temperature

To change the P13 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

-50.0ºC 50.0ºC 4.0ºC

Range

Min Max

Fact. Set

If coil/Evap temperature is reached upto this temperature defrost will stop.

Example : If this parameter is set to

7.0ºC,then if defrosting is in progress then when temperature reaches 7.0ºC, the defrost process will stop.

RH Parameter

Function : To enable or disable humidity sensing.

To change the RH Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

DIS ENB DIS

Range

Min Max

Fact. Set

DISABLE : Humidity sensing disable. ENABLE : Humidity sensing enable.

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

H2 Parameter

Function : To set allowable high humidity limit.

To change the H2 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

Hset+1 100% 100%

Range

Min Max

Fact. Set

Once set at a particular value, this will not allow the set point for Humidity to go above this value and below H3 Set value.

Example : Setting this parameter at 70% will not allow the set point of Humidity to go above 70% . Also, if the humidity reaches 70% or above. the display will show HH(High Humidity) indicating that the humidity has gone above the value in this parameter

H3 Parameter

Function : To set allowable low humidity limit.

To change the H3 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

0% Hset-1 0%

Range

Min Max

Fact. Set

Once set at a particular value, this will not allow the set point for Humidity to go below this value and above H2 Set value.

Example : Setting this parameter at 40% will not allow the set point of Humidity to go below 40% . Also, if the humidity reaches 40%. the display will show LH(Low Humidity) indicating that the humidity has gone below the value in this parameter.

H4 Parameter

Function : To set differential (Hysterisis) for humidity.

To change the H4 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If the set point is set at 60% and differential is set at 3, then when the system reaches 60%, the Relay will cut out. Since the differential is 3, the relay will cut in (restart) at 63% (60% -3%).

1% 10% 2%

Range

Min Max

Fact. Set

(Message on Display)

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

H5 Parameter

Function : To set probe calibration for humidity.

To change the H5 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

In time it may be possible that the display for Humidity may be offset by a % or so. To compensate for this error, you may need to add or minus the % required to achieve the correct Humidity.

Example : The Humidity on the display is 40%, whereas the actual Humidity is 42%. You will need to set the H5 parameter to 2, which means that once out of the programming mode, the Humidity will show 42%(40% + 2%).

-10% 10% 0%

Range

Min Max

Fact. Set

H6 Parameter

Function : To set time delay between relay restart time for humidity.

To change the H6 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

This parameter is used to protect the Humidifier from restarting in a short period of time.

Example : If H6 set at 3 minutes, the relay for Humidifier will cut off at the set Humidity, but will not restart for a minimum of 3 minutes, even if the differential is achieved earlier. This parameter is good to protect the life of the Humidifier or even in applications where the probe is placed at places where there are sudden & short changes in humidity like above a cold room door.

1 Min 20 Min 2 Min

Range

Min Max

Fact. Set

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

QFD Parameter

Function : To set quick freeze duration.

To change the QFD Parameter, press the set key.

Use UP/DOWN keys to set desired value.

This is the maximum amount of time allowed for Quick Freeze. If set to “0”, there will be no quick freeze.

Example : If QFS is set to -20.0 C, and quick freeze duration is set to 1 hr ,then when it is in quick freeze mode, then the Comp. will work on -20.0C set point for 1hr.

0 Hr 12 Hrs 2 Hr

Range

Min Max

Fact. Set

CND3 Parameter

Function : To set condenser logic.

To change the CND3 parameter, press the set key.

Use UP/DOWN keys to set desired value.

This function is used to set condenser logic as per compressor or condenser Set point COMP = As per compressor. SP = As per condenser SP. If this parameter is set to Compressor then condenser will switch ON / OFF as per compressor. But if set to SP then Condenser will be OFF when condenser temperature reaches condenser SP.

COMP SP COMP

Range

Min Max

Fact. Set

CND4 Parameter

Function : To set condenser differential.

To change the CND4 parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If this parameter is set to SP and CSET (Condenser set point ) is 20.0 deg & CND4 to 2.0 deg then at 20.0 degree condenser relay will be off and restart at (20.0 +2.0) 22.0 deg

0.5ºC 20.0ºC 2.0ºC

Range

Min Max

Fact. Set

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

CND5 Parameter

Function : To set condenser probe calibration.

To change the CND5 parameter, press the set key.

Use UP/DOWN keys to set desired value. In time it may be possible that the display for condenser may be offset by a deg or so. To compensate for this error, you may need to add or minus the offset required to achieve the correct condenser temperature.

Example : The temperature on the display is 28.0ºC, whereas the actual temperature is 30.0ºC. You will need to set the CND5 parameter to 2.0ºC, which means that once out of the programming mode, the temperature will show 30.0ºC (28.0ºC+ 2.0ºC).

-10.0ºC 10.0ºC 0.0ºC

Range

Min Max

Fact. Set

CND6 Parameter

Function : To set condenser on delay timings.

To change the CND6 parameter, press the set key.

Use UP/DOWN keys to set desired value.

When Compressor delay over Condenser Fan will come ON first, after cond. On delay over Comp will come ON.

0 Sec 30 Sec 15 Sec

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

This function is used to decide the condenser status when hot gas defrost is on. This parameter is not applicable for Heater defrost. At hot gas defrost, OFF : Condenser will be OFF ON : Condenser will be ON

CND7 Parameter

Function : To set condenser status at hot gas defrost.

To change the CND7 parameter, press the set key.

OFF ON OFF

Range

Min Max

Fact. Set

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Use UP/DOWN keys to set desired value.

This setting is used to limit the max. temperature beyond which the Evap.Fan will cut off.

Example : If this parameter is set to

2.0ºC, then Evap. Fan will cut off at 2.0ºC.

L1 Parameter

Function : To set Evaporator Fan stop temperature.

To change the L1 parameter, press the set key.

-50.0ºC 50.0ºC 2.0ºC

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

Example : If this is set at 3 minutes, Evap. Fan relay will cut off at the set by Evap. Fan Stop TC. Parameter but the Fan will not come on for a minimum of 3 minutes even if it’s differential is achieved earlier.

L2 Parameter

Function : To set Evaporator Restart Delay.

To change the L2 parameter, press the set key.

0 Min 20 Min 1 Min

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

OFF : Evaporator Fan will be Off at compressor OFF. ON : Evaporator Fan will be On at compressor OFF.

L3 Parameter

Function : To set Evaporator Fan status at compressor off.

To change the L3 parameter, press the set key.

OFF ON

Range

Min Max

Fact. Set

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

L4 Parameter

Function : To set Evaporator Fan differential.

To change the L4 parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If Evaporator Fan Stop Tc parameteris set to 2.0ºC, and if EVAP DIFFERENTIAL parameter is set to

2.0ºC,then Evap. Fan will cut off at 2.0ºC and restart only at 0.0ºC. (2.0ºC-2.0ºC = 0.0ºC).

0.5ºC 20.0ºC 2.0ºC

Range

Min Max

Fact. Set

L5 Parameter

Function : To set Evaporator probe calibration.

To change the L5 parameter, press the set key.

Use UP/DOWN keys to set desired value.

In time it may be possible that the display may be offset by a degree or so. To compensate for this error, you may need to add or minus the degrees required to achieve the correct temperature. Setting value is from -10ºC to + 10ºC.

-10.0ºC 10.0ºC 0.0ºC

Range

Min Max

Fact. Set

L7 Parameter

Function : To set CompressorEvaporator Fan status at Door open condition.

To change the L7 parameter, press the set key.

Use UP/DOWN keys to set desired value.

At Door Open, NORM : Normal. FAN : Evaporator Fan Off. COMP : Compressor Off. F-C : Compressor and Evaporator Fan Off.

NORM F-C NORM

Range

Min Max

Fact. Set

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

L8 Parameter

Function : EvaporatorTo set Fan status during defrost.

To change the L8 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

OFF ON OFF

Range

Min Max

Fact. Set

OFF : Fan Off during defrost. ON : Fan On during defrost.

Evaporator

BUZ Parameter

Function : To enable / disable buzzer.

To change the BUZ Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

DIS ENB ENB

Range

Min Max

Fact. Set

Example:

ENB : Buzzer enabled. DIS : Buzzer disabled.

AL Parameter

Function : This parameter is used to set power on delay for alarm.

To change the AL Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

0 Min 99 Min 30 Min

Range

Min Max

Fact. Set

Example : If you set this parameter to

20, once the power is switched on, the alarm will not activate for 20 minutes after the power is switched on. This is most useful to avoid the nuisance alarms when the ambients are high when the machine is switched on after a long time.

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

C-UL Parameter

Function : Under load limit for compressor current.

To change the C-UL parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If C-UL= 1.0A and compressor current is less than 1.0A then and exists till C2 current sensing delay then it is registered as UL fault. Compressor will get OFF on this fault. If after 3 retries within 1 Hour current drawn is still less than 1.0Amp the controller will trip the compressor on fault and activate respective alarm relay. Also display will flash ‘C-UL’. Controller will go in manual reset mode.

0.0A (C-OL

-1.0)A

1.0A

Range

Min Max

Fact. Set

C-OL Parameter

Function : Over load limit for compressor current.

To change the C-OL parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If C-OL= 10 A and compressor current is greater than 10 A then and exist till C2 current sensing delay then C-OL fau lt e xists and fla sh o n di splay. Compressor will be tripped on this fault.

(C-UL

+1.0) A

18.0A 10.0A

Range

Min Max

Fact. Set

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

D-UL Parameter

Function : Under load limit for Heater / Solenoid.

To change the D-UL parameter, press the set key.

0.0A (D-OL

-1.0) A

1.0A

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

Example : If C2 = 5 sec then, any current fault will be valid only when it exists for more than 5 sec.

To change the C2 parameter, press the set key.

C2 Parameter

Function : Current sensing delay.

5 Sec

60 Sec

5 Sec

Range

Min Max

Fact. Set

D-OL Parameter

Function : Over load limit for Heater/Solenoid.

To change the D-OL parameter, press the set key.

Use UP/DOWN keys to set desired value.

Example : If D-OL= 10 A and Heater / Solenoid current is greater than 10 A then and exist till C2 current sensing delay then D-OL fault exists and flash on display. Heater / Solenoid will be tripped on this fault.

(D-UL

+1.0) A

18.0A 10.0A

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

If this parameter is set to

Setting this parameter to disable will ignore HP fault for compressor. If this parameter is set to Enable then controller will detect HP trip.

Example :

ENB : HP sensing is enabled. DIS : HP sensing is disabled

To change the D0 parameter, press the set key.

D0 Parameter

Function : To enable or Disable HP sensing.

DIS

ENB

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

Example : If D-UL= 1.0A and Heater / Solenoid current is less than 1.0A then and exists till C2 current sensing delay then it is registered as UL fault. Heater / Solenoid will get OFF on this fault. If after 3 retries within 1 Hour current drawn is still less than 1.0Amp the

controller will trip the Heater/Solenoid on fault and activate respective alarm relay. Also display will flash ‘D-UL’. Controller will go in manual reset mode.

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Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Use UP/DOWN keys to set desired value.

Setting this parameter to disable will ignore LP fault for compressor. If this parameter is set to Enable then controller will detect LP trip.

Example:

If this parameter is set to ENB : LP sensing is enabled. DIS : LP sensing is disabled.

To change D1 parameter, press the set key.

DIS

ENB

D1 Parameter

ENB

Function : To enable or disable LP sensing.

Range

Min

Max

Fact. Set

D2 Parameter

To change D2 parameter, press the set key.

230V

Function : Fault sensing logic.

230V

Use UP/DOWN keys to set desired value.

0v : 0V at HP/LP/AUX input will be

sensed as fault and trip the compressor.

230V : 230V at HP/LP/AUX input will be

sensed as fault and trip the compressor.

Range

Min

Max

Fact. Set

To change D3 parameter, press the set key.

0 Sec

MinMin

Use UP/DOWN keys to set desired value.

Example : If this parameter is set to 5 sec,then LP fault will be sensed only when it present continuously for 5 Secs.

180 Sec

30 Sec

D3 Parameter

Function : To set LP sensing delay.

Range

Max

Fact. Set

Range

Max

Fact. Set

To change D4 parameter, press the set key.

D4 Parameter

Function : To set reset mode for HP fault.

MAN

AUTO

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

MAN : Manual Mode. AUTO : Auto mode.

If this parameter set to “MAN” mode HP fault will be cleared only after pressing reset key for 2 seconds. If this parameter is set to “AUTO” mode HP fault will be cleared automatically when it is healthy.

To change E1 parameter, press the set key.

E1 Parameter

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

When set to ON : Relay will stay ON. CYC : Relay performs a duty cycle of as per TON & TOFF . OFF : Relay will stay OFF.

ON OFF CYC

Function : To set Compressor Relay status on Probe Failure.

Use UP/DOWN keys to set desired value.

To change TON parameter, press the set key.

TON Parameter

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

At room probe fail condition when E1 parameter is selected as 'CYC' then the on cycle is specified by Ton parameter.

1 Min 30 Min 10 Min

Function : To set On cycle at room probe fail.

Use UP/DOWN keys to set desired value.

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

To change TON parameter, press the set key.

TOFF Parameter

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

At room probe fail condition when E1 parameter is selected as 'CYC' then the Off cycle is specified by Ton parameter.

1 Min 30 Min 4 Min

Function : To set Off cycle at room probe fail.

Use UP/DOWN keys to set desired value.

To change PDN parameter, press the set key.

PDN Parameter

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

DIS : SV relay will not activate. ENB : SV relay will get activated and will cut out and cut-in according to set temperature.

DIS ENB DIS

Function : To activate Solenoid Valve relay.

Use UP/DOWN keys to set desired value.

E7 Parameter

Use UP/DOWN keys to set desired value.

TEMP : At defrosting temperature will be dispalyed. DEFR : At Defrosting 'Defrost ON' will scroll.

Function : To set Display at defrosting.

To change E7 parameter, press the SET key.

TEMP DEFR

TEMP

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Example : If this parameter is set to 7

mins then, when light is switched on after 7 mins it will be switch off automatically.

LD Parameter

Use UP/DOWN keys to set desired value.

This parameter is used set the time delay to automatically switch off the light. If LD is set to 0 then this parameter is disabled.

Function : To set time delay to switch off the light .

To change LD parameter, press the SET key.

0 Min 30 Min 7 Min

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

9999

To change the PW parameter, press the set key.

PW Parameter

Function : To change password.

Use U P/DOWN key to change the password.

User can enter into program mode only if correct password is entered. If the password is wrong it will show ‘INVALID PASSWORD’.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

E8 Parameter

Use UP/DOWN keys to set desired value.

Example: If this is set to 10 min, then manual defrost for 10 min will take place during Coil probe fail.

Function : Defrost duration during Coil probe failure.

To change E8 parameter, press the SET key.

1 Min 10 Min

5 Min

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

ID Parameter

This parameter is used to set the Unit ID of the device.

Function : To set Unit ID.

To change Unit ID parameter, press the SET key.

1 240

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

CRH Parameter

Function : To view Compressor run Hours.

It will display compressor run hours. It's a read only parameter.

YES

CCRH

Function : Clear Compressor Run Hours.

If this parameter is set to ‘YES’ compressor run hours (CRH) are cleared.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

To change Keypad Lock parameter, press the set key.

NO YES NO

Function: To activate Keypad Lock.

This parameter can lock the keypad so that tempering is not possible by bystanders.

NO : deactivates keypad lock. YES : activates keypad lock.

On activation, all the parameters can only be viewed, but not modified. If the keypad is locked “LOCK” message will be displayed..

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

DIS

ENB

DIS

To change PO parameter, press the SET key.

PO Parameter

Function : To enable/disable Power Switch.

Use UP/DOWN keys to get desired value & press SET key to confirm.

DIS : Disable power switch ENB : Enables power switch

Controller has power switch, which if enable puts controller in active or stand by state. If press for 2 seconds controller will go in stand by mode, display will be as per “PDIS” parameter. To again switch to ACTIVE WORKING MODE, press power switch again for 2 seconds. All leds and display will flash and enter into NORMAL WORKING MODE.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

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.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

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Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

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.

Function: To exit programming.

To exit programming parameter, press the SET key.

YES

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.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Technical Data

Housing : ABS Plastic. Dimensions : 400 x 300 x 135 mm Mounting : Wall mounting. Connection : Spring clamp terminal block.

4 sq. mm wire.

Display : 4 Digit, 1” Dot matrix Display and 14 LEDs for

indication.

Data Storage : Non-Volatile EEPROM Memory. Power Input (Options) : 415Vac +/-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 :

Contactors Comp & Def. : 18A. Contactor Evap. : 9A. Condenser Relay : 10A/250Vac. Light Relay : 10A/250Vac. Alarm Relay : 5A/250Vac. Humidifier Relay : 10A/250Vac.

Sensors :

1) Temperature sensor:

Resolution : 0.1 C.

Accuracy : +/-1 C.

0 0

Probe Tolerance at 25 C : +/-0.3 C.

Room & Evap Temperature :

0 0

Range : -50.0 C to 50.0 C

Condenser Temperature :

0 0

Range : 0.0 C to 99.9 C

2) Humidity sensor

Range : 0 to 100% Resolution : 1%.

Analog I/p:

Compressor current (R,Y,B) Defrost current(R,Y,B) Resolution : 0.1Amp. Accuracy : +/-1 Amp.

Sensor Type : NTC Thermistor.

Sensor Type : 4-20mA out.

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Technical Data

Digital Inputs:

HP, LP, Auxillary, Door, Sppr, R-Ph, Y-Ph, B- Ph.

Buzzer : Internal

RS485 Connectivity : Modbus RTU Protocol

Baud Rate : 9600 Device ID : 1 (By Default)

WIRING : The probe and its corresponding wires should never be installed in a conduit next to control or power supply lines. The electrical wiring should be done as shown in the diagram. The power supply circuit should be connected to a protection switch.

WARNING : Improper wiring may cause irreparable damage and personal injury. Kindly ensure that wiring is done by qualified personnel only.

Maintenance : Cleaning : Clean the surface of the controller with a soft moist cloth. Do not use abrasive detergents, petrol, alcohol or solvents.

Controller

Controller should be installed in a place protected by vibration, water and corrosive gasses and where ambient temperature does not exceed the values specified in the technical data.

Probe

To give a correct reading, the probe must be installed in a place protected from thermal influences, which may affect the temperature to be controlled.

Caution

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The information in this document is subject to change in order to improve reliability, design or function without prior notice and does not represent a commitment on the part of the company. In no event will the company be liable for direct, indirect, special, incidental or consequential damage arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages. No part of this manual may be reproduced or transmitted in any form or by any means without the prior written permission of the company.

Notice

Disclaimer

Warranty

This manual & its contents remain the sole property of A.S.Controls Pvt.Ltd., India and shall not be reproduced or distributed without authorization. Although great care has been taken in the preparations of this document, the company or its vendors in no event will be liable for direct, indirect, special, incidental or consequential damage arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages. No part of this manual may be reproduced or transmitted in any form or by any means without the prior written permission of the company. A.S.Controls Pvt.Ltd. reserves the right to make and changes or improvements without prior notice.

This product is warranted against defects in materials and workmanship for a period of one year from the date of purchase. During the warranty period, product determined by us to be defective in form or function will be repaired or, at our option, replaced at no charge. This warranty does not apply if the product has been damaged by accident, abuse, and misuse or as a result of service or

modification other than by the company. This warranty is in lieu of any other warranty expressed or implied. In no event shall the company be held liable for incidental or consequential damages, such as lost revenue or lost business opportunity arising from the purchase of this product.

INDIA

Ball Valves

Globe Valves

Hand Valves

Flow Switches

Solenoid Valves

OUR OTHER PRODUCTS

Cold Room Controller

Chiller Controller

Two Compressors Controller

Heating Controller Humidity Controller Pressure Controller

00 / 13.03.12

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SUGGESTED CONNECTION DIAGRAM

2 1

R PHASE

LSV

COMP

DEF

EVAP

COND

2 1

LIGHT

ALARM

HUMIDIFIER

PHASE

9 8

AUX

SPPR

DOORGND

B Phase

11 1012

Y Phase

R PHAS E

NEUTRAL

9 8

111012

Cond P robe

Coil P robe

Room P robe

14 13

RH IN

GND

RS485

2 1

GND

CT6

CT5

CT4

CT3

CT2

CT1

A2 A3 A6

A7A5

1 2

OUTPUTS FAULT SIGNALS INPUT SUPPLYSENSOR CT INPUTOUTPUTS

EMERGENCY

STOP