DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
22
July 2001
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-41
Open thermal protector (TP) or
transistor over temperature.
This status code will be displayed when the voltage at
the thermal protector is too high.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Reduced or no power to traction motor in
control range.
POSSIBLE CAUSE
Control is in thermal cut back.
•
=
Allow control to cool, status code
should disappear.
Defective control.
•
=
Replace controller unit.
(Values of greater than 4 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
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-42
Motor armature offset voltage is too
high.
This status code will be displayed when the value of
motor amps is greater than 138 (corresponding to 2.7
volts) with no current flowing in the motor circuit.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Defective control.
•
=
Replace controller unit.
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 138, (corresponding to
2.7V), triggering this status code.
