GE SX TRANSISTOR CONTROL IC3645SR4U404N2 - Manual (Page 31)

DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 31
January 2000
-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.
KEY SWITCH
L
P7
P1 P17 P2 P6
P9
P3
P12 P8
P4 P5
SEAT
SW.
ST
AR
T
SW.
FOR
. S
W
.
R
EV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
FU7
TO
ACCESSORIES
FU6 P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2 FIE
L
D
A
RM
A
T
URE
ACC POT
BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG F2
FIE
L
D
A
RM
A
T
URE
FU5
BRAKE SW.
A2
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.
KEY SWITCH
L
P7
P1 P17 P2 P6
P9
P3
P12 P8
P4 P5
SEAT
SW.
ST
AR
T
SW.
FOR
. S
W
.
R
EV.
SW.
P10
P18
PY7
PY12
PY10
PY11
SP
P1
P5
P4
P2
FU7
TO
ACCESSORIES
FU6 P3
OSCILLATOR CARD
LEFT CONTROL
FU1
STEER
ANGLE
POT
LINE
POWER
CONNECTIONS
LEFT CONTROL
POS A1 F1
NEG A2 F2 FIE
L
D
A
RM
A
T
URE
ACC POT
BDI INTERRUPT
+
-
SP
SP
FU4
A1
FU2
P
P
POWER
CONNECTIONS
RIGHT CONTROL
POS A1 F1
NEG F2
FIE
L
D
A
RM
A
T
URE
FU5
BRAKE SW.
A2