DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
26
March 2000
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-41
Open thermal protector (TP) or
transistor over temperature.
This status code will be displayed when the voltage at
the thermal protector is too high.
MEMORY RECALL
YES *
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Reduced or no power to traction motor in
control range.
POSSIBLE CAUSE
Control is in thermal cut-back.
??
Allow control to cool, status code should
disappear.
Defective control.
??
Replace controller unit.
* First status code displayed immediately,
additional status codes displayed in 20 hour
intervals.
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18
P17
P2
P6
P4
SEAT SW.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7
P9
*
F1
F2
FIELD
F1
F2
ACCEL
START
SW.
+
-
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-42
Motor armature offset voltage is too
high.
This status code will be displayed when the voltage at
the current sensor input is greater than 2.6 volts with
no current flowing in the motor circuit.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Defective control.
??
Replace controller unit.
FU3
FU5
KEY SWITCH
*
CONTROL
POWER
CONNECTION
POS
A1
NEG A2
ARMATURE
FU1
LINE
A2
A1
*
*
1A
*
OSC CARD CONNECTIONS
L
1A
DIRECT SW.
P18
P17
P2
P6
P4
SEAT SW.
*
SP
P3
*
FWD
REV
P5
*
ACCEL
START
SW.
P1 P7
P9
*
F1
F2
FIELD
F1
F2
ACCEL
START
SW.
+
-