Error description 237-180B7

Error message

180B7 Excessive error frequency for telegrams of UM 3xx %1

Cause of error

The frequency of faulty telegrams during transmission of the actual current values from the UM to the CC is above the limit value.
Possible causes
- Electromagnetic noise or faulty electrical contacts of the 24V supply voltage
- Electromagnetic noise or faulty electrical contacts of the DC-link voltage
- Electromagnetic noise or faulty electrical contacts in the motor cabling
- Electromagnetic noise or faulty electrical contacts in the brake cabling
- Contamination or poor optical coupling of the HFL

Error correction

- Check the machine and wiring for correct shield connection and grounding
- Check the power cables for correct clamping
- Check the HFL for correct routing, and also for contamination and correct clamping
- Exchange the UM 3xx inverter
- Exchange the CC 3xx controller unit
- Generate a service file and inform your service agency