Nilfisk-Advance CS7000 Service Manual page 421

Service Manual – CS7000
Flash
Programmer LCD
Code Display/ Effect Of Fault
#
27
Digital Out 7 Overcurrent
Digital Output 7 driver will
not turn on.
Note: This circuit is not used
on the CS7000
28
Motor Temp Hot Cutback
Reduced drive torque.
29
Motor Temp Sensor Fault
MaxSpeed reduced (LOS,
Limited Operating Strategy),
and motor temperature
cutback disabled.
31
K7 Wheel Drive
Contactor Coil Driver
Open/Short
ShutdownDriver1.
Troubleshooting Chart
Possible Cause(s)
1. External load impedance on
Digital Output 7 driver (pin
20) is too low.
1. Motor temperature is at
or above the programmed
Temperature Hot setting, and
the requested current is being
cut back.
2. Motor Temperature Control
Menu parameters are mis-
tuned.
3. See Monitor menu » Motor:
Temperature and » Inputs:
Analog2.
4. If the application doesn't
use a motor thermistor,
Temp Compensation and
Temp Cutback should be
programmed Off.
1. Motor thermistor is not
connected properly.
2. If the application doesn't use
a motor thermistor, Motor
Temp Sensor Enable should
be programmed Off.
3. See Monitor menu » Motor:
Temperature and » Inputs:
Analog2.
1. Open or short on driver load.
2. Dirty connector pins.
3. Bad crimps or faulty wiring.
Wheel System, Traction
Set/Clear Conditions
Set: Digital Output 7 (pin 20)
current exceeded 15 mA.
Clear: Remedy the overcurrent
cause and use the VCL
function Set_DigOut() to turn
the driver on again.
Set: Motor temperature is at
or above the Temperature Hot
parameter setting.
Clear: Bring the motor
temperature within range.
Set: Motor thermistor input
(pin 8) is at the voltage rail (0
or 10V).
Clear: Bring the motor
thermistor input voltage within
range.
Set: Driver 1 (pin 6) is either
open or shorted. (Pin 6 is the
K7 wheel drive contactor coil
driver circuit.) This fault can
be set only when Main Enable
= Off.
Clear: Correct open or short,
and cycle driver.
421