Wesley BC-620-4CA User Manual
Page 118
114
Curtis 1234/36/38 Manual,
OS
11
Table 5 TROUBLESHOOTING CHART, continued
PROGRAMMER LCD DISPLAY
CODE
EFFECT OF FAULT
POSSIBLE CAUSE
SET/CLEAR CONDITIONS
8 — DIAGNOSTICS & TROUBLESHOOTING
27
Digital Out 7 Overcurrent
1. External load impedance on Digital
Set: Digital Output 7 (pin 20) current
Digital Output 7 driver
Output 7 driver (pin 20) is too low. exceeded 15 mA.
will not turn on.
Clear: Remedy the overcurrent cause
and use the VCL function
Set_DigOut()
to turn the driver on again.
28
Motor Temp Hot Cutback
1. Motor temperature is at or above
Set: Motor temperature is at or above the
Reduced drive torque.
the programmed Temperature Hot
Temperature Hot parameter setting.
setting, and the requested current is
Clear: Bring the motor temperature
being cut back.
within range.
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.
29
Motor Temp Sensor Fault
1. Motor thermistor is not connected
Set: Motor thermistor input (pin 8) is at
MaxSpeed reduced (LOS,
properly.
the voltage rail (0 or 10V).
Limited Operating Strategy),
2. If the application doesn’t use a motor Clear: Bring the motor thermistor input
and motor temperature
thermistor, Motor Temp Sensor
voltage within range.
cutback disabled.
Enable should be programmed Off.
3. See Monitor menu » Motor:
Temperature and » Inputs: Analog2.
31
Coil1 Driver Open/Short
1. Open or short on driver load.
Set: Driver 1 (pin 6) is either open or
ShutdownDriver1.
2. Dirty connector pins.
shorted. This fault can be set only when
3. Bad crimps or faulty wiring.
Main Enable = Off.
Clear: Correct open or short, and cycle driver.
31
Main Open/Short
1. Open or short on driver load.
Set: Main contactor driver (pin 6) is
ShutdownMotor;
2. Dirty connector pins.
either open or shorted. This fault can be
ShutdownMainContactor;
3. Bad crimps or faulty wiring.
set only when Main Enable = On.
ShutdownEMBrake;
Clear: Correct open or short, and cycle driver
ShutdownThrottle;
FullBrake;
ShutdownPump.
32
Coil2 Driver Open/Short
1. Open or short on driver load.
Set: Driver 2 (pin 5) is either open or
ShutdownDriver2.
2. Dirty connector pins.
shorted. This fault can be set only when
3. Bad crimps or faulty wiring.
EM Brake Type = 0.
Clear: Correct open or short, and cycle driver.
32
EMBrake Open/Short
1. Open or short on driver load.
Set: Electromagnetic brake driver (pin 5)
ShutdownEMBrake;
2. Dirty connector pins.
is either open or shorted. This fault can
ShutdownThrottle;
3. Bad crimps or faulty wiring.
be set only when EM Brake Type > 0.
FullBrake.
Clear: Correct open or short, and cycle driver.
33
Coil3 Driver Open/Short
1. Open or short on driver load.
Set: Driver 3 (pin 4) is either open or
ShutdownDriver3.
2. Dirty connector pins.
shorted.
3. Bad crimps or faulty wiring.
Clear: Correct open or short, and cycle driver.
34
Coil4 Driver Open/Short
1. Open or short on driver load.
Set: Driver 4 (pin 3) is either open or
ShutdownDriver4.
2. Dirty connector pins.
shorted.
3. Bad crimps or faulty wiring.
Clear: Correct open or short, and cycle driver.