GE SX TRANSISTOR CONTROL IC3645SR4U404N2 - Manual (Page 28)

DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL Page 28
January 2000
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-27
Control’s power supply is less than 10
Volts DC. This status code will be displayed when the control’s
power supply is less than 10 volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor opens and closes, then can only
be closed by opening and closing the key
switch.
POSSIBLE CAUSE
Discharged Battery
• = Check battery to insure proper state of charge.
Voltage may be dropping below 10 Volts DC
under load.
Loose connection at P1.
• = Insure that the wire connection at P1 is tight.
Defective control.
• = Replace controller unit.
NEG
+
-
FU3
KEY
SWITCH
P1 P2
FU5
TRACTION
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-28
Motor field current is too high during
the run mode. This status code will be displayed when the current
draw in the motor field is sustained above a preset
limit for longer than 70 seconds.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Continued operation of vehicle in high motor
current condition.
• = Operate vehicle at lower motor current
condition for 70 seconds.
Function 7 is mis-adjusted to allow higher than
normal motor field current.
Adjust function per OEM instructions.
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