DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
28
July 2002
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-77
Capacitor (1C) voltage too high during
motoring.
This status code will be displayed when the voltage at
1C exceeds 96 volts during motoring.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor opens and closes, then
opens and can only close by opening and
closing the key switch.
POSSIBLE CAUSE
Defective control.
•
=
Replace controller unit.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
FI
E
L
D
AR
M
A
T
U
R
E
A1
A2
A1
A2
F2
F1
BA
T
T
+
-
FU1 *
LINE *
400A
FU3 *
10A