Specifications

41
STATUS CODE
-51
DESCRIPTION
No
MEMORY
RECALL
CONTROL
TYPE
Traction
STATUS CODE
-50
DESCRIPTION
No
MEMORY
RECALL
CONTROL
TYPE
Traction
Figure 1
Figure 1
SYMPTOM
Forward or reverse contactor picks up. Control does not
operate.
POSSIBLE CAUSE
Defective 2 REC circuit.
 Open circuit or loose connection between spider
assembly and 5 REC (BUS A).
 Open circuit or loose connection between 5 REC
and 2 REC.
 Open circuit or loose connection between 2 REC
and PZ11 (red wire) and between 2 REC gate and
PZ10 (white/red wire).
 Check 2 REC to insure that it will gate on.
STATUS INDICATION CRITERIA
This status code is displayed when 2 REC circuit fails
to turn on at initial start up.
STATUS INDICATION CRITERIA
This status code is displayed when capacitor volts
exceed 225 volts and motor current is greater than 300
amps.
SYMPTOM
Forward or reverse contactors open and close, then can
only be closed by opening and closing the key switch.
POSSIBLE CAUSE
Excessive source inductance.
 Tag lines without filters are being used.
 Battery cables are too long.
High peak current in motor.
 Check for shorted field winding.
 Check for shorted armature winding.
Capacitor volts low .
Excessive capacitor voltage when motor current is high.