DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
38
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-57
Controller “motor current sensor” input
too low during running.
This status code will be displayed when the voltage
input from the current sensor is too low during
running.
MEMORY RECALL
YES
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
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-66
FET field protection has shut down.
This status code will be displayed when field transistor
drops high. The control is reset by recycling the key
switch.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
•
=
Defective control.
Replace controller unit.
•
=
Line contactor tips welded open.
Replace line contactor.
•
=
Verify that there are no motor shorts.
•
=
Verify that there are no cable shorts between:
B+ and F1
B+ and F2
A2 and F2
A1 and F2
F1 and F2
POWER CONNECTIONS
LEFT CONTROL
POS
A1
F1
NEG
A2
F2
FIELD
ARMATURE
FU4
A1
A2
S1
S2
SP
+
-
FU1
POWER CONNECTIONS
RIGHT CONTROL
POS
A1
F1
NEG
A2
F2
FIELD
ARMATURE
L
P1 P17
P2 P6
P3
P4
P5
SEAT SW.
START SW.
FORWARD SW.
REVERSE
SW.
P23 P22
P10
P13
S
E
R
IA
L
RE
CE
IV
E
SER
IA
L T
R
AN
SM
IT
B
D
I I
N
TE
RRUP
T
P14 P15
I-
MO
TO
R O
U
TP
UT
BR
AKESW
.
STEER PUMP
FIELD
STEER PUMP
ARM
P11 P18
1A OR
SP D
V
R
PLU
G
/R
GN
OU
T
P
U
T
LEFT
CONTROL
(MASTER)
TO PUMP
CONTROL
POSITIVE
TO PUMP CONTROL POSITIVE
LINE
SPEED LIMIT SWITCH
FU3
KEY SWITCH
BRAKE SW.