DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
39
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-67
FET armature protection has shut
down.
This status code will be displayed when the armature
transistor SAT drop is high or line tips are open.
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 armature shorts.
•
=
Verify that there are no cable shorts between
the following points:
A1 and A2
B+ and A2
B- and A2
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
IAL T
R
AN
SM
IT
B
D
I IN
T
E
R
R
U
P
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.
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-68
The PMT enable signal from the
auxiliary (slave) control to the master
control drops below 5V
This status code will be displayed when the voltage at
master PL21 drops below 5V.
MEMORY RECALL
YES
CORRECTIVE
ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
•
=
Auxiliary control shut
down.
Check Auxiliary control
for stored faults.
•
=
Verify the connection
between the master
control P21 and the
auxiliary/slave control
P10.
P7 P8
P1
P17
P2
P6
P9
P3
P12 P8
P4
P5
P23 P22
P10
P21
P13
ACC POT
STEER
ANGLE POT
S
E
R
IA
L
RE
CE
IV
E
SER
IAL T
R
AN
SM
IT
B
D
I I
N
TE
RRUP
T
P14
BR
AKE SW.
P11 P18
1A OR
SP D
V
R
PL
U
G
/R
GN
OU
T
P
U
T
P7 P12
P6
P2
P1
P3 P4 P5
LEFT
CONTROL
(MASTER)
RIGHT
CONTROL
(SLAVE/
AUXILIARY)
P10
P13
SPEED LIMIT SWITCH
P16
P15