DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 36
Revised May 2003
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-66
The field current exceeds the current
limit of the field transistor.
This status code will be displayed when the field
transistor exceeds its specific current limit. The line
contactor will drop out and the key switch will have to
be recycled to restart the control.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate
· Line contactor opens
POSSIBLE CAUSE
· Shorted field F1 to F2
· F1 or F2 terminals shorted to battery
positive (B+)
· F1 or F2 terminals shorted to battery
negative (B-)
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
-67
The armature current exceeds the
armature transistor limit.
This status code will be displayed when the armature
transistor exceeds its specific current limit. The control
is reset by recycling the key switch.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
· Shorted motor armature A1 to A2
· Power cables may be shorted to
each other (Measure at control
terminals)
· A1 to A2 terminals may be shorted
to battery positive or negative
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