INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL Page 27
CAUSE OF STATUS INDICATION
The line coil current is too high
during the run mode
This status code will be displayed when the current limit in the
line coil is exceeded during the run mode. The line contactor
will drop out and the key switch will have to be recycled to
reset the control.
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Shorted line contactor coil
Short between wires connected
to line coil (wires #10 and 24)
Insure that all inductive loads
are suppressed.
Incorrect line contactor coil.
Defective control.
Replace controller unit.
L
P9 P7 P8
P1
P17 P2 P6
P4 P5
TURF SW.
FORWARD SW.
REVERSE SW.
ACC POT
TACHOMETER
P15 P14 P16
P10
BUZZER
RED
GREEN
BLACK
P3
NEG INPUT
START SW.
P12
REGEN
BRAKE SW
P21
MOTOR
OVER TEMP
+72V
+72V
+72V
+72V
+72V +72V
+72V
P22 P23
P20
RS232
72V
NEG
CAUSE OF STATUS INDICATION
The field current exceeds the current limit
of the field transistor.
This status code will be displayed when the field
transistor exceeds its current limit. The line
contactor will drop out and the key switch will have
to be recycled to restart the control.
Circuits valid
for
Traction
Controller
Control will not operate or is sluggish on
start up. Line contactor opens.
POSSIBLE CAUSES
Shorted field F1 to F2
F1 or F2 terminals shorted to battery
positive (B+)
Confirm that all inductive
loads/accessories are suppressed.
Motor armature or field shorted to
frame.
Defective control.
Replace controller unit.
L
P9 P7 P8
P1
P17 P2 P6
P4 P5
TURF SW.
FORWARD SW.
REVERSE SW.
ACC POT
TACHOMETER
P15 P14 P16
P10
BUZZER
RED
GREEN
BLACK
P3
NEG INPUT
START SW.
P12
REGEN
BRAKE SW
P21
MOTOR
OVER TEMP
+72V
+72V
+72V
+72V
+72V +72V
+72V
P22 P23
P20
RS232
72V
NEG
Updated Sept 2019
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