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© Copyright 2019 KE2 Therm Solutions, Inc., Washington, Missouri 63090

Q.2.60 March 2019

Page 24

KE2 Compressor 

Sequencer OEM  

pn 21768

Quick Start Guide

Critical Alarms & Cautionary Alarms

Abbre-

viation Alarm

Description

Critical

A01

Suction Pres Sensor [Group 1] Alarm

Group 1 suction pressure sensor is shorted, open or pressure out of 

range.

A02

Disch Pres Sensor [Group 1] Alarm

Group 1 discharge pressure sensor is shorted, open or pressure out 

of range.

A03

Suction Temp Sensor [Group 1] Alarm

Group 1 suction temperature sensor is shorted or open.

A04

Disch Temp Sensor [Group 1]

Group 1 discharge temperature sensor is shorted or open.

A06

High Superheat [Group 1] Alarm

Group 1 suction superheat is higher than 

Max Suction SH

 for longer 

than 

Min/Max SH Del

.

A07

Low Superheat [Group 1] Alarm

Group 1 suction superheat is lower than 

Min Suction SH

 for longer 

than 

Min/Max SH Del

.

A08

High Disch Temp [Group 1] Alarm

Group 1 discharge temperature is higher than 

Max Disch Temp

 for 

longer than 

Max Dis Tmp De

l.

A09

High Int Comp Temp [Group 1] Alarm

Group 1 digital compressor internal temp high. Will turn off digital 

compressor until temp lowers.

A10

High Disch Pres [Group 1] Alarm

Group 1 discharge pressure is higher than 

Max Disch Pres

 for longer 

than 

Max Dis Prs Del

.

A13

Comp Mod [Group 1] Alarm

Group 1 Compressor Module digital input is active.

A16

Oil Safety [Group 1] Alarm

Group 1 Oil Safety digital input is active.

A19

Hi Pres Safety [Group 1] Alarm

Group 1 High Pressure Safety digital input is active.

A22

Aux Brd Comms Alarm

Main Board unable to communicate with the Aux Relay Board(s).

A25

Watchdog Alarm

Contact KE2 Therm.

A26

Email Failure Alarm

Email alert was not confirmed by email server provided after seven 

consecutive attempts.

A28

High Disch Temp [Group 2] Alarm

Group 2 discharge temperature is higher than 

Max Disch Temp

 for 

longer than 

Max Dis Tmp Del

.

A29

Evap Comms [Group 1] Alarm

Group 1 SiteView controllers not communicating.

A30

Evap Comms [Group 2] Alarm

Group 2 SiteView controllers not communicating.

A31

Disch Pres Sensor [Group 2] Alarm

Group 2 discharge pressure sensor is shorted, open or pressure out 

of range.

A32

Suction Temp Sensor [Group 2] Alarm

Group 2 suction temperature sensor is shorted or open.

A34

High Superheat [Group 2] Alarm

Group 2 suction superheat is higher than 

Max Suction SH

 for longer 

than 

Min/Max SH Del

.

A35

Low Superheat [Group 2] Alarm

Group 2 suction superheat is lower than 

Min Suction SH

 for longer 

than 

Min/Max SH Del

.

A36

Disch Temp Sensor [Group 2] Alarm

Group 2 discharge temperature sensor is shorted or open.

A37

High Int Comp Temp [Group 2] Alarm

Group 2 digital compressor internal temp high. Will turn off digital 

compressor until temp lowers.

A38

High Disch Pres [Group 2] Alarm

Group 2 discharge pressure is higher than 

Max Disch Pres

 for longer 

than 

Max Dis Prs Del

.

Alarms - All Groups

Alarm Severity

Red LED - Critical Alarm: The controller will attempt to safely pump down the suction group. The group is unable to run safely with a critical 

alarm, and the controller will cease refrigeration for that group. The controller is attempting to prevent a catastrophic system failure, such as 

damage to the compressors.  Critical alarms should be addressed immediately.

Yellow LED -

 

Cautionary Alarm: The controller will continue to function to the best extent possible given the system conditions, but the 

alarm should be addressed as soon as possible.

Summary of Contents for Compressor Sequencer OEM

Page 1: ...condenser inlet 15 ft 20199 Standard temp sensor for all other temp inputs 10 ft black 20200 Standard temp sensor for all other temp inputs 40 ft black Replacement Relays 21374 Replacement Form C Rel...

Page 2: ...ssor temp room temp monitor temp hot gas defrost request 2nd pressure 2nd temp compressor module alarm high pressure safety alarm oil pres sure safety alarm system off Communication Standard TCP IP AP...

Page 3: ...stages of loading for a single suction group or up to 10 stages of loading 5 per suction group for dual suction groups For dual suction groups the discharge line can be shared between the two groups o...

Page 4: ...on Discharge Aux Relay Board 1 Aux Relay Board 2 To Condenser Oil Line Suction Header Discharge Header Option 2 KE2 Compressor Sequencer OEM 1 Aux Relay Boards Single Suction Group w Common Discharge...

Page 5: ...ELAY 3 RELAY 2 RELAY 1 STEPPER MOTOR Not Used Red Black Green Suction Pressure Transducer Line L1 Neutral L2 INCOMING POWER 120 208 230 VAC GROUND EARTH GROUND Chassis FUSE Discharge Pressure Transduc...

Page 6: ...ot Used STEPPER MOTOR Not Used Red Black Green Suction Pressure Transducer Line L1 Neutral L2 INCOMING POWER 120 208 230 VAC GROUND EARTH GROUND Chassis FUSE Discharge Pressure Transducer Green Black...

Page 7: ...AC GROUND POWER FUSE RELAY 5 External Digital Switch requires Relay pn 21032 0 10V Variable Speed OV 10V or 0V to 5V Digital Compressor Bypass Valve OV 10V requires Solid State Relay pn 21304 AUX 1 IN...

Page 8: ...D Chassis FUSE Discharge Pressure Transducer Green Black Shared Red T1AH250VP 1A 250V slow blow 5mm x 20mm A B Sh ON 1 2 3 4 5 6 7 8 Aux 1 2 3 Function Options int comp temp room temp monitor temp HG...

Page 9: ...1 2 3 4 5 6 7 8 INCOMING POWER 120 208 230VAC GROUND POWER FUSE RELAY 5 Not Used 0 10V Variable Speed OV 10V or 0V to 5V Digital Compressor Bypass Valve OV 10V requires Solid State Relay pn 21304 AUX...

Page 10: ...Transducer Green Black Shared Red T1AH250VP 1A 250V slow blow 5mm x 20mm A B Sh ON 1 2 3 4 5 6 7 8 Aux 1 2 3 Function Options int comp temp room temp monitor temp HGDef req 2nd pres 2nd temp cmp modul...

Page 11: ...p 2 Suction Pressure AUX 2 INPUT 1 ON 1 2 3 4 5 6 7 8 INCOMING POWER 120 208 230VAC GROUND POWER FUSE RELAY 5 External Digital Switch requires Relay pn 21032 0 10V Variable Speed OV 10V or 0V to 5V Di...

Page 12: ...re Transducer Green Black Shared Red T1AH250VP 1A 250V slow blow 5mm x 20mm A B Sh ON 1 2 3 4 5 6 7 8 Aux 1 2 3 Function Options int comp temp room temp monitor temp HG Def req 2nd pres 2nd temp cmp m...

Page 13: ...ays Group 1 Group 2 Suction Pressure AUX 2 INPUT 1 ON 1 2 3 4 5 6 7 8 INCOMING POWER 120 208 230VAC GROUND POWER FUSE RELAY 5 External Digital Switch requires Relay pn 21032 0 10V Variable Speed OV 10...

Page 14: ...Fi Service Tool KE2 Smart Gate RB201 1UAS 2HND IN USB SFP POE GIGABIT ETHERNET ETH1 ETH5 ETH3 ETH4 ETH2 ETH6 ETH10 ETH8 ETH9 ETH7 6 7 8 9 10 1 2 3 4 5 FAST ETHERNET Option 2 Using a KE2 Smart Gate pn...

Page 15: ...Aux Relay boards connected to the controller one or two Unas signed Aux Relay boards may appear on the screen Click on the icon under Group 1 This will load the Setpoints page for Group 1 Next click...

Page 16: ...Setpoints page of Group 1 Otherwise relays and any additional inputs are designated from the Aux Relay Board interface Single Group Main Board Only Select the function of each relay then click the Sa...

Page 17: ...Quick Start Guide Single Group Dual Group Aux Boards When using Aux Relay Boards the relays and any additional inputs can be assigned in the in terface for the Aux Relay Board From the Home Page clic...

Page 18: ...ration See pages 26 28 for detailed explanation of each Setpoint When the KE2 Compressor Sequencer OEM is started for the first time or anytime a critical setpoint is changed the controller enters Sys...

Page 19: ...the button until SA is shown Press the arrow un til SYS SY1 or SY2 is shown SYS indicates System Off when config ured for Single Group SY1 and SY2 indicate their respective groups when configured for...

Page 20: ...energizing the bypass solenoid or the variable speed compressor will be loaded by increasing the 0 10VDC output 0 5VDC also available The rate at which the Digi tal Scroll or variable speed is loaded...

Page 21: ...Internal Compressor Temperature Monitors internal compressor temperature for Copeland Digital Scroll compressors Triggers High Inter nal Compressor Temperature Alarm which turns off digital compresso...

Page 22: ...sion on the controller Remote Display Setpoints Menu Single Group When not in a menu press and hold until SA is shown Press or to go through the setpoint abbreviations Press to view the current setpoi...

Page 23: ...on Temperature as calculated by the controller dH2 Discharge Superheat Group2 Group 2 Discharge Superheat as calculated by the controller iP1 IP Octet 1 First three digits of the IP address iP2 IP Oct...

Page 24: ...g Alarm Contact KE2 Therm A26 Email Failure Alarm Email alert was not confirmed by email server provided after seven consecutive attempts A28 High Disch Temp Group 2 Alarm Group 2 discharge temperatur...

Page 25: ...dr 2 Input 2 Sensor Group 1 or Group 2 Alarm Aux Board 2 Input 2 Temp Sensor is shorted or open A59 Aux Addr 2 Input 3 Sensor Group 1 or Group 2 Alarm Aux Board 2 Input 3 Temp Sensor is shorted or ope...

Page 26: ...32 2 C 10 0 F Suc Press Diff Suction Pressure Differential when all compressor are set to fixed speed controller will load and unload stages outside of this range For digital and variable speed compr...

Page 27: ...8 C 0 0 F Min Suction SH Minimum Suction Superheat The lowest acceptable superheat for the suction line Turns system off when exceeded longer than Min Max SH Del 5 0 F to 50 0 F 2 8 C to 27 8 C 15 0...

Page 28: ...ldr for Cmp1 Unldr for Cmp2 Unldr for Cmp3 Unldr for Cmp4 Disabled Comp HP Once compressor type is selected the HP of each compressor can be set 0 1 HP to 50 0 HP 5 0 HP Digital Inputs InPUT2 MODE Sel...

Page 29: ...information Location IP address MAC address Firmware version Example of Mobile View Brings up the Status page for that Aux Relay Board Brings up the Status page for that Aux Relay Board Brings up the...

Page 30: ...on the bar to expand or collapse the view for that suction group Status of each relay Click on Suction Pressure dial to zoom in Total of compressor capacity used for the suction group Scroll down to v...

Page 31: ...e user also designates relays and determines the function of selectable inputs from this page Status Page Auxiliary Board Display the status of each Aux Relay Board input Click to set the function of...

Page 32: ...p LT Suction Group etc Single Group Single Group plus 1 Aux Single Group plus 2 Aux Dual Group Shared Discharge plus 2 Aux Dual Group Independent plus 2 Aux Site and Password may be changed by custome...

Page 33: ...from the default Once you are logged in go to the Settings page to change the User Name and Password To make changes to the Aux Relay Board the user will be prompted for the User Name and Password if...

Page 34: ...ynamic Disabled IP is Static Shows Internet connection status Red Unable to reach Internet Yellow Some Internet services unavailable Green Good Inernet connection NOTE Do not modify the Controller Nam...

Page 35: ...s the input function Input 1 2 or 3 Mode Disabled In Cmp Temp Room Temp Monitor HG Defr Req 2nd Pres 2nd Tmp Comp Module Hi Pres Safety Oil Safety Sys Off Selectable Inputs Relay 1 Dropdown Options Di...

Page 36: ...ints page Setpoints Page Main Board Aux Relay Board s Input 1 2 or 3 Mode Disabled In Cmp Temp Room Temp Monitor HG Defr Req 2nd Pres 2nd Tmp Comp Module Hi Pres Safety Oil Safety Sys Off Selectable I...

Page 37: ...ontroller to a CSV file Date and Time are pulled from the connected computer Days Ago Capacity Load and Suction Pressure are displayed when moving the mouse over the data Days ago Description The Grap...

Page 38: ...seven consecutive attempts A28 A28 High Disch Temp Group 2 Alarm Alarm Critical Group 2 discharge temperature is higher than Max Disch Temp for longer than Max Dis Tmp Del A29 A29 Evap Comms Group 1...

Page 39: ...ture as read by the controller dt1 dt1 Discharge Temperature Group1 Variables Dual Group Group 1 Discharge Temperature as read by the controller dt2 dt2 Discharge Temperature Group2 Variables Dual Gro...

Page 40: ...ted Suction Temperature as calculated by the controller SAt SAt Saturation Temperature Variables Single group Saturated Suction Temperature as calculated by the controller SH1 SH1 Superheat Group1 Var...

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