DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 38
Revised May 2003
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-76
Capacitor (1C) voltage too high. This status code will be displayed when the voltage on
the capacitor goes above limit voltage* during the
regenerative braking cycle.
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
· Unplugging the battery connector
during regenerative braking.
· Line contactor bouncing open during
regen.
· Main power fuse opening during
regen.
· Intermittent battery plug connection.
* Limit Voltage:
Limit Batt.
50V 36V
70V 48V
96V 72/80V
CONTROL POWER
CONNECTION
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU1
A2
F2
*
*
*
*
+
-
LINE
*
FU5
*
FU3
KEY SWITCH
*
*
P9
P1
L
P17 P2
*
P18
*
24V
FAN ENABLE
FAN
A1
*
P13
P7
ACCEL
SWITCH
P8
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-77
Motor current is detected during
regenerative braking.
This status code will be displayed when motoring
current is detected during the regenerative braking
cycle.
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
CONTROL POWER
CONNECTION
POS A1 F1
NEG A2 F2
FIELD
ARMATURE
FU1
A2
F2
*
*
*
*
+
-
LINE
*
FU5
*
FU3
KEY SWITCH
*
*
P9
P1
L
P17 P2
*
P18
*
24V
FAN ENABLE
FAN
A1
*
P13
P7
ACCEL
SWITCH
P8
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