DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Page
27
July 2002
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-66
The field current exceeds the current limit
of the field transistor.
This status code will be displayed when the field
transistor exceeds its current limit. The line
contactor will drop out and the key switch will have
to be recycled to restart the control.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Control will not operate or is sluggish on
start up. Line contactor opens.
POSSIBLE CAUSES
•
=
Shorted field F1 to F2
•
=
F1 or F2 terminals shorted to battery
positive (B+) or to battery negative (B-)
•
=
Binding line contactor
•
=
Visually inspect tips, clean them with a
solvent.
•
=
Noise
•
=
Confirm that all inductive
loads/accessories are suppressed.
•
=
Excessive motor and control heating
(control is in thermal cutback)
L
T
U
R
F
SPEE
D
L
IMI
T
SW
IT
C
H
*
CHARGER
SWITCH *
KEY
SWITCH
*
ST
AR
T
S
W
IT
C
H
*
DIRECTIONAL
SWITCH *
FOR
W
A
R
D
R
EVE
R
S
E
BU
Z
Z
ER
*
A
CCE
L P
O
T
*
P1
P2
P3
P4
P5
P11 P10
P15
TA
C
H
OM
E
T
E
R
*
P14 P16
P7
P9
P13
P8
P6
RE
D
G
R
EEN
BL
A
C
K
PLUG (23 PIN)
EM
E
R
G
E
N
C
Y
BR
A
KE S
W
IT
C
H
*
*
P21
MO
T
O
R
T
H
E
R
MA
L
SW
IT
C
H
TRACTION
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-76
Capacitor (1C) voltage too high during
pedal up regen braking.
This status code will be displayed when the voltage at
1C exceeds 96 volts during the regenerative braking
cycle.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Traction
Controller
SYMPTOM
Line contactor opens and closes, then
opens and can only close by opening
and closing the key switch.
POSSIBLE CAUSE
Defective control.
•
=
Replace controller unit.
Batteries are overcharged.
POWER CONNECTIONS
TO CONTROL
POS
A1
F1
NEG
A2
F2
FI
E
L
D
AR
M
A
T
U
R
E
A1
A2
A1
A2
F2
F1
BA
T
T
+
-
FU1 *
LINE *
400A
FU3 *
10A
