GE IC3645SR7A353T4 Installation And Operation Manual page 22

INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL
TRACTION DESCRIPTION OF STATUS
STATUS CODE
Shorted thermal protector (TP) or
-41
transistor over temperature.
MEMORY RECALL
YES
SYMPTOM
Reduced or no power to traction motor in
Circuits valid
control range.
for
POSSIBLE CAUSE
Traction
Control is in thermal cut back.
Controller

Defective control.

(Values of less than 1.5 V at the thermal
protector are typically indicative of a failed
control.)
GE Sentry for Windows software can be
used to monitor control operation, and it
will display a value for the thermal
protector that is greater than 84
(corresponding to 1.65V), triggering this
status code.
TRACTION
DESCRIPTION OF STATUS
STATUS CODE
Motor armature offset voltage is too
-42
high.
MEMORY RECALL
NO
SYMPTOM
Control will not operate.
Circuits valid
for
POSSIBLE CAUSE
Traction
Defective control.
Controller 
GE Sentry for Windows software can
be used to monitor control operation,
and it will display a value for the motor
amps that is greater than 133,
(corresponding to 2.6V), triggering this
status code.
CORRECTIVE ACTIONS
Allow control to cool, status code
should disappear.
Replace controller unit.
CORRECTIVE ACTIONS
Replace controller unit.
CAUSE OF STATUS INDICATION
This status code will be displayed when the voltage at
the thermal protector is too low.
TROUBLE-SHOOTING DIAGRAM
CAUSE OF STATUS INDICATION
This status code will be displayed when the value of
motor amps is greater than 133 (corresponding to 2.7
volts) with no current flowing in the motor circuit.
TROUBLE-SHOOTING DIAGRAM
Page 22
Updated Sept 2019