Q.2.43 April 2018
Page 2
KE2 Compressor
Sequencer
Quick Start Guide
© Copyright 2018 KE2 Therm Solutions, Inc., Washington, Missouri 63090
D1
D3
D2
Gr
ound
T2 Air
O
ptional
T3 D
ischar
ge
T1 S
uc
tion
GREEN
(SIGNAL)
Digital S
cr
oll Unloader
(0-10V ANAL
OG O
uT
)
RED
(+5V
)
BL
ACK
(GROUND
)
PT SH
DIGITAL INPUTS
ROUTER / SWITCH
CAT5e CABLE
(ETHERNET)
RJ 45
L1
NO NC
COM
NO NC
COM
COM
NO
NC
COM
NO
NC
LINE
NEUTRAL
GROUND
CONTROLLER
POWER INPUT
KE2 COMPRESSOR SEQUENCER - Fixed Speed Compressors
COMP
STAGE 4
COMP
STAGE3
COMP
STAGE 2
COMP
STAGE 1
VOLTAGE JUMPER
208-240V
Default
L1
CON2
Compressor 2
CON1
Compressor 1
L1
L1
L1
– +
CON3
Compressor 3
CON4
Compressor 4
Signal
– +
PT DH
GREEN
RED
BL
ACK
+14V
EXTERNAL DIGITAL
SWITCH
12 VDC; 100 OHMS
120 AMPS
CON5
Compressor 5
L2
LEGEND
Digital Scroll Unloader −
Analog
output to control digital scroll compressor.
PT SH −
0-150 psia pressure transducer
for suction header
T1 Suction −
-50° to 150°F Tempera-
ture sensor for suction header
T2 Air −
Optional -50° to 150°F tempera-
ture sensor for space temperature. Allows
floating suction control feature.
T3 Discharge −
0° to 300°F temperature
sensor for discharge header
PT DH −
0 to 500 psig pressure transducer
for discharge header
Wiring the Controller
D1
D3
D2
Gr
ound
T2 Air
O
ptional
T3 D
ischar
ge
T1 S
uc
tion
GREEN
(SIGNAL)
Digital S
cr
oll Unloader
(0-10V ANAL
OG O
ut)
RED
(+5V
)
BL
ACK
(GROUND
)
PT SH
DIGITAL INPUTS
ROUTER / SWITCH
CAT5e CABLE
(ETHERNET)
RJ 45
L1
NO NC
COM
NO NC
COM
COM
NO
NC
COM
NO
NC
LINE
NEUTRAL
GROUND
CONTROLLER
POWER INPUT
KE2 COMPRESSOR SEQUENCER - Compressor with Unloaders
COMP
STAGE 4
COMP
STAGE3
COMP
STAGE 2
COMP
STAGE 1
VOLTAGE JUMPER
208-240V
Default
L1
CON2
Unloader 1
CON1
Compressor 1
L1
L1
L1
– +
CON3
Unloader 2
CON4
Compressor 2
Signal
– +
PT DH
GREEN
RED
BL
ACK
+14V
EXTERNAL DIGITAL
SWITCH
12 VDC; 100 OHMS
120 AMPS
CON5
Compressor 3
L2
NOTE : Unloaders are wired to the
Normally Closed contacts
