DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
32
January 1999
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-28
Motor field current is too high during the
run mode.
This status code will be displayed when the current in
the motor field is sustained above a preset limit for
longer than 35 or 70 seconds, depending on control
type.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Continued operation of vehicle in high motor
current condition.
•
=
Operate vehicle at lower motor current
condition for 35 or 70 seconds, depending
on control type.
Function 7 is mis-adjusted to allow higher than
normal motor field current.
•
=
Adjust function per OEM instructions.
NO GRAPHIC FOR THIS
STATUS CODE
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-29
Motor armature current is too high
during the run mode. ( Dual Motor
Proportioning Controls Only)
This status code will be displayed when the motor current
in control “A” is greater than 125A while the motor current
in control “B” is less than 26A for a 16 second interval.
MEMORY RECALL
YES
CORRECTIVE
ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control operates at the
reduced speed set by
Speed Limit 3.
POSSIBLE CAUSE
Continued operation of
vehicle in high motor
current condition.
•
=
Verify operation of
other control during
the run mode.
•
=
Examine opposite
control for stored
faults which may
have shut down the
opposite control.
•
=
Verify the connection
between P16 of the
master and P17 of
the auxiliary control
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
P15
P16