Replace coil if damaged.
• Lowering valve cartridge is damaged.
Replace lowering valve cartridge.
Dash Display
Controller LED
Handset or PC
CONDITION
AL5
5 Flashes
EB DRIVER KO
Electric brake does not release or remains
released at all times.
TRUCK RESPONSE
Traction and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURE
• Damaged or loose electrical connection to brake.
Verify electrical connection between electric
brake and controller.
• Check brake coil for correct coil resistance.
Disconnect brake. Measure brake coil resistance
in both directions. Coil resistance should be between
27.36 and 30.24 ohms.
• Damaged controller.
Activate the brake switch. Use voltmeter to
measure voltage on wire 2C and 17 with brake
connected in circuit. If both measurements are
24V and the alarm is displayed, then controller
is damaged.
Dash Display
Controller LED
Handset or PC
CONDITION
AL6
6 Flashes
V FIELD NOT OK
Voltage measured at field connections is not correct.
TRUCK RESPONSE
Traction and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURE
• Cable connection to motor field is loose or damaged.
Verify connection of field wires to motor and controller.
• Check condition of crimps on wires connecting to F1
and F2.
Dash Display
Controller LED
Handset or PC
CONDITION
AL6
6 Flashes
I = 0 EVER
Motor current levels do not exceed a preset
minimum value while driving.
TRUCK RESPONSE
Traction and hydraulic function disabled.
POSSIBLE CAUSES AND TEST PROCEDURE
• Damaged or loose electrical connections to traction
motor.
Verify electrical connections between traction
motor and controller.
• Traction motor armature resistance is too low.
Check traction motor armature for shorts.
• Controller is damaged.
Cycle key switch. Place steer handle in drive position
and select throttle. If the truck starts to drive but
then stops and presents code AL6, replace controller.
Dash Display
Controller LED
Handset or PC
CONDITION
AL6
6 Flashes
HIGH FIELD CURR,
BW HIGH FLD CURR,
FW HIGH FLD CURR
High field current values measured by controller.
TRUCK RESPONSE
Traction and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURE
• Field wires are loose, damaged, or shorted.
Verify connection of field wires to motor and controller.
• Motor field winding is shorted or too low.
Check motor field for correct resistance and
continuity. It should measure approximately 0.5 ohms.
• Failure of current sensor in controller.
FOR REFERENCE ONLY 5/4/10 Rev A
(86 paginas)
(124 paginas)
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