Sub-Zero CRC-1001, CRC-1001-C User Manual

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Page 1

COLD ROOM CONTROLLER

USER MANUAL

www.ascontrols.com

INDIA

CRC-1001 / CRC-1001-C

Page 2

DESCRIPTION

PARAMETER

Introduction

Pg. No.

Index Index

DESCRIPTION

PARAMETER

Pg. No.

Get to Know Your Controller

Parameter List

To set the cut-out point of the controller.

To set maximum allowable high temperature limit.

SET POINT

To set the Minimum Cooling Temperature.P3

To set the differential for compressor restart.

To set probe calibration.

To set time delay between relay restart time.

To set duration of defrost.

To set defrost frequency.

To set power on defrost delay.

To enable or disable Buzzer.

BUZ

To set under voltage limit.

To set over voltage limit

To set voltage differential.

Power on time delay for alarm.

To set time delay for voltage sensing.

To set Over current limit.

To set Under current limit.

10-11

Key Introduction

To set Current sensing delay.

To enable or Disable HP sensing.

Main Programming Mode

Suggested wiring diagram for CRC-1001-C

To enable or disable LP sensing.

To set 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 Evap fan status when compressor is OFF.

To set EVAP Fan operation at door open.

End of programming.

Technical Data

Suggested wiring diagram for CRC-1001

To set Crankcase Heater operation when compressor is OFF.

To set Display at defrosting.

To set time delay to switch off the light .

To change password.

To set Unit ID. (For CRC-1001-C only)

Unit ID

Factory set parameter.

Compressor run Hours.

CRH

Clear Compressor Run Hours.

CCRH

To activate Keypad Lock.

KEYPAD LOCK

Caution & Warranty

To enable/disable Power Switch.

Page 3

The CRC-1001/CRC-1001-C are single set point cold room controllers. The Sub-Zero CRC-1001/CRC-1001-C are aesthetically superior versions of their predecessors.

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

The CRC-1001/CRC-1001-C controller can be used for several applications with a measuring range from

O O

-50.0 C to50.0 C.

The controller controls the defrost in the system based on time based where the compressor is stopped. It is also possible to select the interval between defrosts and a maximum time out after which the defrost is interrupted.

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.

Introduction

03 04

Get to Know Your Controller

Items included

NO.

QTY

ITEMS

CONTROLLER

CATALOGUE

NTC SENSOR 3 METER

6 X 25 SCREW

CRC-1001

FAULT LOG VOLT

Amp.

HP/LP

UL/OL UV/OV

RST

PRG

SET

AUX

Dot Matrix LED Display

LED Indications

Lamp

Key

Reset

Key

Defrost

Key

Program Mode

Key

Up / Volt.

Key

Down / Amp.

Key

Set Key

Power ON/OFF Key

Fault

Log Key

Page 4

Key Introduction

Auxiliary/Fault Log Key

Alarm Reset Key

Defrost Key

RST

AUX

PRG

Program Key

Up/Volt Key

SET

Down/Amp. Key

Set Key

Power Key

Lamp ON/OFF Key

Press PRG Key to Enter Programming mode / ESC Key.

1> USER PROGRAM

MAIN SYSTEM PROGRAMMING MODE

Press AUX/FAULT LOG Key to View last 9 Fault Log.

3> FAULT LOG

SET POINT 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.

Press and hold SET key for 2 seconds and Release.

P3+0.5

P2-0.5

0.0ºC

SET

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

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Range

Min Max

Fact. Set

P2 Parameter

Function : To set maximum 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.

P3 Parameter

Function : To set minimum 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.

Set Point

+0.5

50.0ºC 50.0ºC

-50.0ºC

Set Point

-0.5ºC

-50.0ºC

PRG

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.

Range

Min Max

Fact. Set

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Range

Min Max

Fact. Set

Press RST Key to reset alarm relay & buzzer.

4> Mute

Press SET Key to Enter Set mode.

2> SET MODE

Press Defrost Key for manual defrost.

5> Manual Defrost

Press Down/Amp Key to see the compressor current.

6> View Current

Press UP/Volt Key to see the voltage.

7> View Voltage

Page 5

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

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

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

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

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

P7 Parameter

Function : To set duration of defrost.

To change the P7 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 30 Mins and P8 parameter is set to 1 Hr. then after every 1 Hr defrosting will take place for 30 mins. In defrosting Compressor , Evap Fan relay willl be OFF.

P8 Parameter

Function : To set defrost frequency.

To change the P8 Parameter, press the set key.

Use UP/DOWN keys to set desired value.

1 Hrs 31 Hrs 6 Hrs

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.

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.

Page 6

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

Use UP/DOWN keys to set desired value.

ENB : Buzzer Enabled. DIS : Buzzer Disabled.

BUZ Parameter

Function: To enable or disable Buzzer.

To change BUZ press the set key.

parameter,

DIS ENB ENB

Range

Min Max

Fact. Set

Use the UP/DOWN keys to get desired value and press SET key.

AL Parameter

Function: Power on time delay for alarm.

To change AL press the set key.

parameter,

0 Min 99 Min 30 Min

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

Example : If this parameter is set to 180V then if the voltage is less than 180V it will show UV fault on display and Compressor Relay will be off.

UV Parameter

Function: To set under voltage limit.

To change UV press the set key.

parameter,

180V (OV-10)V 180V

Range

Min Max

Fact. Set

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

OV Parameter

Function : To set over voltage limit

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

Use UP/DOWN keys to set desired value.

(UV+5)V 260 240

Range

Min Max

Fact. Set

Example : If this parameter is set to

240V then if the voltage is above than 240V it will show OV fault on display and Compressor Relay will be off.

V1 Parameter

Function : To set time delay for voltage sensing.

To change the V1 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

5 Sec 30 Sec 5 Sec

Range

Min Max

Fact. Set

Example : If V1 parameter is 5, then if

voltage fault condition occures and stays continuously for 5 sec then only fault is valid.

UL Parameter

Function : To set Under current limit.

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

Use UP/DOWN keys to set desired value.

0.0A (OL-1.0)A 1.0A

Range

Min Max

Fact. Set

This parameter used to switch off the compressor incase it draws lower current than the set current.

V0 Parameter

Function : To set voltage differential.

To change the V0 Parameter parameter, press the set key.

Use UP/DOWN keys to set desired value.

5V 50V 5V

Range

Min Max

Fact. Set

Example : If this parameter is set to 5V

then for OV fault when voltage is grater than OV-5 then only this fault is cleared. For UV fault then when the voltage is greater than UV+5 then only UV fault will be cleared.

Example : If you set this parameter to 20min, once the power is switch on, the alarm for Ht/Lt will not activate for 20 minutes after the power is switched on. This is most useful to avoid the nuisance alarms when the ambient are high when machine is switched on after long time.

Page 7

OL Parameter

Function : To set Over current limit.

To change the OL parameter, press the set key.

Use UP/DOWN keys to set desired value.

This parameter used to switch off the compressor incase it draws higher current than the set current.

Example : If this parameter is set at

10.0A, the controller will trip compressor if it draws more than 10.0A.Controller will restart the compressor after the set time delay. If after 3 retries within 1hour, current drawn is still more than 10.0A, the controller will trip the compressor on fault and activate the respective alarm relay. Also display will flash “OL”.

(UL+1.0)A 18.0A 10.0A

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

Example :

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

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.

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

To change the C2 parameter, press the set key.

C2 Parameter

Function: To set Current sensing delay.

Use UP/DOWN keys to set desired value.

Example : If C2 parameter is 1 Sec then, any current fault will be valid only when it exsists for more than 1 sec.

0 Sec 60 Sec 5 Sec

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

D2 Parameter

To change D2 parameter, press the set key.

230V

Function: To set fault sensing logic.

230V

Use UP/DOWN keys to set desired value.

0v =

rip the

compressor.

230V =

rip the

compressor.

0V at HP/LP/AUX input will be

sensed as fault and t

230V at HP/LP/AUX input will be

sensed as fault and t

Range

Min

Max

Fact. Set

Example : If this parameter is set at

1.0A, the controller will trip compressor if it draws less than 1.0A. Controller will restart the compressor after the set time delay. If after 3 retries within 1hour, current drawn is still less than 1.0A, the controller will trip the compressor on fault and activate the respective alarm relay. Also display will flash “UL”.

Use UP/DOWN keys to set desired value.

Example:

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

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

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

Page 8

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 10 minutes ON and 4minutes OFF. 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.

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Sr.

No.

Parameter setting method

Description of parameters and functions.

Parameter

To change D4 parameter, press the set key.

D4 Parameter

Function : To set reset mode for HP fault.

MAN

AUTO

MAN

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.

E7 Parameter

Use UP/DOWN keys to set desired value.

TEMP = At defrosting temperature will be dispalyed. DEF = At Defrosting 'Defrost ON' will scroll.

Function: To set Display at defrosting.

To change E7 parameter, press the SET key.

TEMP DEF

TEMP

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

OFF

E3 Parameter

Use UP/DOWN keys to set desired value.

OFF = Heater will stay Off. ON = Heater will stay On. at compressor off condition.

Crankcase

Function : To set Crankcase Heater operation when compressor is OFF.

To change E3 parameter, press the set key.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Use UP/DOWN keys to set desired value.

OFF = Evap Fan will stay OFF. ON = Evap Fan will stay ON. at door open condition.

E4 Parameter

Function: To set EVAP Fan operation at door open.

To change E4 parameter, press the set key.

OFF ON ON

Range

Min Max

Fact. Set

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 at 30 seconds, the system will ignore low pressure alarm for 30 sec from compressor on. In this manner, a false alarm can be avoided due to low pressure at compressor start up.

180 Sec

30 Sec

D3 Parameter

Function : To set LP sensing delay.

Range

Max

Fact. Set

Range

Max

Fact. Set

E2 Parameter

Function : To set Evap fan status when compressor is OFF.

Use UP/DOWN keys to set desired value.

OFF = Evaporator Fan will stay OFF. ON = Evaporator Fan will stay ON. at compressor off condition.

To change E2 parameter, press the set key.

OFF ON ON

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Page 9

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

Example : If this parameter is set to 7

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

9999

To change PW parameter, press the SET key.

PW Parameter

Function : To change password.

Use UP/DOWN key to change 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

To change CRH parameter, press the SET key.

CRH Parameter

Function: Compressor run Hours.

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

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

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

KEYPAD LOCK

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.

When locked all parameters can only be viewed, but not modified.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

YES

To change CCRH parameter, press the SET key.

CCRH

Function : Clear Compressor Run Hours.

If t his par ame ter is s et t o ‘YES ’ com pr ess or ru n ho ur s (CRH ) a re cleared.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

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

Unit ID Parameter

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

Function: To set Unit ID. (For CRC-1001-C only)

To change Unit ID parameter, press the SET key.

1 240

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Page 10

Sr. No.

Parameter setting method

Description of parameters and functions.

Parameter

EP Parameter

Once the SET key is pressed, the control goes into the normal mode and displays the temperature and all settings are recorded.

Function: To end programming.

To end programming parameter, press the set key.

Technical Data

Housing : ABS Plastic. Front Cover : Red Ploycarbonate plastic. Dimensions : Length 227mm, Width 200mm, Depth 93 mm Mounting : Panel/Wall mounting with screws. Connection : Screw terminal blocks.

2.5sq mm one wire/terminal only. Display : 0.56”, 5X7 Dot Matrix LED display. Data Storage : Non-Volatile EEPROM Memory. Power Input (Options) : 230Vac +/-10%, 50-60Hz, Other on request.

0 0

Operating Temp : 5 C to 50 C(non-condensing).

0 0

Storage temp : -20 C to 70 C(non-condensing). Output :

Compressor Relay : 20A/250Vac. Evap Relay : 10(3)A/250Vac. Crankcase Heater : 8(2)A/250Vac. Light Relay : 5A/250Vac. Alarm Relay : 5A/250Vac. Input : 1 NTC Probe.

0 0

Range : -50.0 C to 50.0 C.

Resolution : 0.1 C.

Accuracy : +/-1 C.

0 0

Probe Tolerance at 25 C : +/-0.3 C. Alarm (Buzzer) : SZ-B75. 10V,10mA. RS485 Connectivity : Modbus RTU Protocol

(for CRC-1001-C only) Baud Rate : 9600, N, 8, 1

Device ID : 1 (By Default)

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 scroll message “STAND BY MODE”. To again switch to ACTIVE WORKING MODE, press power switch again for 2 seconds.

DIS

ENB

DIS

To change PO parameter, press the SET key.

PO Parameter

Function : To enable/disable Power Switch.

Range

Min Max

Fact. Set

Range

Min Max

Fact. Set

Page 11

Suggested Wiring Diagram for CRC-1001

15 16

18 19

LP HP AUX

AUX

230V

N L

Caution : Wiring for 230Vac Load Only.

PHASE

NEUTRAL

8 9 10

11 12

NO NO NOC C C

COMP

Alarm 250 Vac

5Amax

CCH EVAP

NO C

LIGHT

NO C

ALARM

TEMP. DOOR

Light or Contact

5A Max

Compressor

or Contactor Coil

(250VAC, 20Amax)

CCH or Contactor Coil

(250VAC, 8(2)Amax)

Evap or Contactor Coil

(250VAC, 10(3)Amax)

Suggested wiring Diagram for CRC-1001-C

21 22

230V

N L

Caution : Wiring for 230Vac Load Only.

PHASE

NEUTRAL

14 17

18 19

NO C

COMP

Alarm 250 Vac

5Amax

NOC

CCH

NO C

EVAP

8 9 10

NO C

LIGHT

NO C

ALARM

LP HP AUX

AUX

TEMP. DOOR

Light or Contact

5A Max

15 16

RS485

- +

Compressor

or Contactor Coil

(250VAC, 20Amax)

CCH or Contactor Coil

(250VAC, 8(2)Amax)

Evap or Contactor Coil

(250VAC, Amax)10(3)

Page 12

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. The terminals admit wires of upto

2.5sq mm.

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

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.

Page 13

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