GE IC3645SR7A353T4 Installation And Operation Manual page 21

INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL
TRACTION
DESCRIPTION OF STATUS
STATUS CODE
Motor field current is too high when the
-24
key switch is turned on.
MEMORY RECALL
NO
SYMPTOM
Control will not operate.
Circuits valid
for
POSSIBLE CAUSE
Traction
Defective control.
Controller

TRACTION
DESCRIPTION OF STATUS
STATUS CODE
12V buss is too low.
-27
MEMORY RECALL
YES
SYMPTOM
Line contactor opens and closes and
Circuits valid
then can only be closed by opening
for
and closing the key switch.
Traction
Controller
POSSIBLE CAUSE
Discharged battery.

Loose connection at P1.

Shorted Motor Tachometer

Defective control.

CORRECTIVE ACTIONS
Replace controller unit.
CORRECTIVE ACTIONS
Check battery to insure proper state of
charge. Voltage may be dropping below
15V under load.
Insure that the wire connection at P1 is
tight.
Disconnect tach and run control, if status
code 27 does not appear, check tach.
Replace controller unit.
CAUSE OF STATUS INDICATION
This status code will be displayed when the current
draw in the motor field is too high on start up.
TROUBLE-SHOOTING DIAGRAM
NO GRAPHIC FOR THIS
STATUS CODE
CAUSE OF STATUS INDICATION
This status code will be displayed when the internal
power supply of the control dips below 9.35V.
TROUBLE-SHOOTING DIAGRAM
LINE
FU1
+
72 VDC
POS A1 F1
-
POWER CONNECTIONS
NEG A2 F2
Page 21
+72V
+72V
L
P1
P17 P2
P12
Updated Sept 2019