INTORQ BFK471-25, Перевод оригинальной инструкции по эксплуатации

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Troubleshooting and fault elimination
INTORQ | BA 14.0200 | 02/2016 46
8 Troubleshooting and fault elimination
If any malfunctions should occur during operations, please check for possible causes based on the following
table. If the fault cannot be fixed or eliminated by one of the listed measures, please contact customer ser-
vice.
Brake malfunctioning
Fault Cause Remedy
Brake does
not release Coil interruption ❚ Measure the coil resistance using a multimeter:
- If resistance is too high, replace the complete stator.
Coil has contact to
earth or between wind-
ings ❚ Measure coil resistance with multimeter:
- Compare measured value with rated resistance.
- Values:
16
- If resistance is too low, replace the complete stator.
❚ Check coil for short circuit to ground using a multimeter:
- Replace the complete stator if short circuit to ground is detected.
❚ Check brake voltage (see "defective rectifier, voltage too low").
Wiring defective
or incorrect ❚ Check and correct.
- Check cable for continuity using a multimeter:
❚ Replace the complete stator if a cable is defective.
Defective or incorrect
rectifier ❚ Measure rectifier DC voltage using a multimeter.
If DC voltage is zero:
❚ Check AC rectifier voltage. If AC voltage is zero:
- Switch on power supply.
- Check fuse.
- Check wiring.
If AC voltage is OK:
- Check rectifier.
- Replace the defective rectifier.
If DC voltage is too low:
- Check rectifier.
- If diode is defective, use a suitable new rectifier.
❚
Check coil for inter-turn fault or short circuit to ground.
❚
If the rectifier defect occurs again, replace the entire stator, even if you can-
not find any fault between turns or short circuit to ground. The fault may occur
later during heating-up.
Air gap too big
Replace the rotor 42 and read corresponding note
Rotor thickness too
small
Tab. 19: Troubleshooting