INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL
Page
20
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-21
Accelerator voltage is too high.
This status code will be displayed when the
accelerator voltage at P7 is greater than 4.5
volts.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Accelerator input is mis-adjusted or
defective.
Input voltage at P7 should be less than
4.5 volts after initial key switch closure.
Open wire exists between
potentiometer negative and P8.
Open wire exists between P7 and
potentiometer wiper.
L
P9 P7
P8
P1
P17
P2
P6
P4
P5
TU
RF SW
.
FORWARD S
W
.
R
E
VERSE
SW
.
ACC POT
TACHOMETER
P15 P14 P16
P10
BUZZER
RED
GREEN
BLAC
K
P12
REGEN
BR
AK
E
SW
P21
MO
T
O
R
OVER
TE
M
P
+72V
+72V
+72V
+72V
+72V +72V
+72V
P22
P23
P20
RS232
72V
NEG
P3
NE
G
IN
P
U
T
START SW
.
+72V
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-23
Motor field current is too high when the
key switch is turned on.
This status code will be displayed when the current
draw in the motor field is too high on start up.
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.
NO GRAPHIC FOR THIS
STATUS CODE
Updated Sept 2019