CVHE-SB-32A 35
Table 2
Stepper Motor Connections
Heat Sink Temperature
This temperature is monitored on the Cutler-Hammer Solid State Starters Only. The Starter
module monitors the Solid State Starters Heat Sink Temperature, displays it in the compressor
report on the Clear Language Display, and provides a Heat Sink Temperature Start Inhibit mode.
The Start Inhibit Temperature is ROM based (Not adjustable at the Human Interface) by Solid
State Starter, and Chiller size.
On a call for cooling if the heat sink temperature is above the value shown in the table above the
unit shall enter the Heat Sink Temperature Start Inhibit mode until either the heat sink
temperature drops 1.8°F (1°C) below the Start Inhibit Temperature, at which time the unit will
complete the pre-start procedures and start, or there is no longer a call for cooling.
The heat sink temperature sensor connects to Starter module terminals J7-1 and J7-2.
J6 or J8 Connector
Pin# on Stepper
Module
Motor Winding
Output Signal
Name
RTH 34X1BEHH
Motor Terminal
Connection
CTV, ABS M091-
FD8109 Motor Terminal
Connection
4 1+ 1 3
3 2+ 3 5
2 1- 2 1
1 2- 4 4
Chiller Nameplate RLA SSS Heat Sink High Temp. Start Inhibit
0-200 Amps 67°C (152.6°F)
201-360 Amps 77°C (170.6°F)
361-560 Amps 77°C (170.6°F)
561-700+ Amps 78°C (172.4°F)
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