INSTALLATION AND OPERATION
SX TRANSISTOR CONTROL
Page
25
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-49
Motor field current is too low during the
run mode.
This status code will be displayed when the current
draw in the motor field is less than 1.3 amps and
armature current is greater than 100 amps for more
than 1.27 seconds during the run mode.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Motor field is open circuit
Replace motor
Loose between control and motor field
Check connections
Defective control.
Replace controller unit.
NO GRAPHIC FOR THIS
STATUS CODE
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-51
Capacitor volts are low before the line
contactor closes.
This status code will be displayed
during “key on”
when the capacitor volts is less than 85% of battery
volts at initial key switch on.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor does not close when
capacitor does not pre-charge.
POSSIBLE CAUSE
Defective control fuse.
Check control fuse for open circuit
condition. Replace fuse, if
necessary.
Turn key off and wait 1 minute,
then try again.
Defective control.
Replace controller unit.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
F
IEL
D
AR
M
AT
U
R
E
A1
A2
A1
A2
F2
F1
BAT
T
+
-
FU1 *
LINE *
400A
FU3 *
10A
Updated Sept 2019
