KE2 Compressor Sequencer OEM - 2 Main Board + 1 Aux Relay Board Single Suction Group W. Common Discharge

© Copyright 2019 KE2 Therm Solutions, Inc., Washington, Missouri 63090
Q.2.60 March 2019
Page 6
KE2 Compressor Sequencer OEM pn 21768
Quick Start Guide
ON
1 2 3 4
5 6 7 8
* Use only chassis ground or spade connector ground
**Function Options are the same as list shown for the Main
Board Aux Inputs.
AUX 2
NO NC
COM
Suction Temp Sensor (black)
AUX 3
AUX 1
Discharge Temp Sensor
(grey)
OUTPUT - Not Used
0 - 10 VDC
Ethernet Port
(RJ45) for remote
communications
Display (RJ-11)
RELAY
- Not Used
RELAY - Not Used
RELAY - Not 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
Shared Red
T1AH250VP
1A 250V
slow blow
5mm x 20mm
A +
B –
Sh
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)
- Digital Compressor Bypass Valve (OV/10V)
requires Solid State Relay pn 21304
**AUX 1
INPUT 3
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 module alarm
- hi pres safety alarm
- oil pres safety alarm
- system off
Shield - Not Used
**AUX 1
INPUT 2
AUX
1INPUT 1
Not Used
RS485
1 - ON
2 - 8 OFF
B-
A+
Shield
Not Used
ADDRESS 1
Address set to
Address 1 only
Opon 2:
Main Board + 1 Aux Relay Board
Single Sucon Group w. Common Discharge
Sh B– A+
– + + –
+12
Signal - Green
Black
Red
– +5
FUSED RELAY 1
FUSED RELAY 3 FUSED RELAY 4FUSED RELAY 2
COM NC NO COM NC NOCOM NC NO COM NC NO
(pn 21323)
To Condenser
Oil Line
Sucon Header
Discharge Header
Aux Relay Board 1