Nilfisk-Advance CS7000 Service Manual page 423

Service Manual – CS7000
Flash
Programmer LCD
Code Display/ Effect Of Fault
#
37
Motor Open
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
38
K7 Wheel Drive
Contactor Welded
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
39
Main Contactor Did Not
Close
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
41
Throttle Wiper High
ShutdownThrottle.
42
Throttle Wiper Low
ShutdownThrottle.
Troubleshooting Chart
Possible Cause(s)
1. Motor phase is open.
2. Bad crimps or faulty wiring.
1. K7 Wheel Drive contactor tips
are welded closed.
2. Motor phase U or V is
disconnected or open.
3. An alternate voltage
path (such as an external
precharge resistor) is
providing a current to the
capacitor bank (B+ connection
terminal).
1. Main contactor did not close.
2. Main contactor tips are
oxidized, burned, or not
making good contact.
3. External load on capacitor
bank (B+ connection terminal)
that prevents capacitor bank
from charging.
4. Blown B+ fuse.
1. See Monitor menu » Inputs:
2. Throttle Pot. wiper voltage
too high.
1. See Monitor menu » Inputs:
Throttle Pot.
2. Throttle pot wiper voltage too
low.
Wheel System, Traction
Set/Clear Conditions
Set: Motor phase U, V, or W
detected open.
Clear: Cycle KSI.
Set: Just prior to the K7 wheel
drive contactor closing, the
capacitor bank voltage (B+
connection terminal) was
loaded for a short time and the
voltage did not discharge.
Clear: Cycle KSI
Set: With the main contactor
commanded closed, the
capacitor bank voltage (B+
connection terminal) did not
charge to B+.
Clear: Cycle KSI.
Set: Throttle pot wiper (pin 16)
voltage is higher than the high
fault threshold (can be changed
with the VCL function Setup_
Pot_Faults).
Clear: Bring throttle pot
wiper voltage below the fault
threshold.
Set: Throttle pot wiper (pin 16)
voltage is lower than the low
fault threshold (can be changed
with the VCL function Setup_
Pot_Faults).
Clear: Bring throttle pot
wiper voltage above the fault
threshold.
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