Rexroth servo motor repair encoder failure
1.Encoder cable failure: This is one of the most common types of faults and can result in an open, short, or poor contact of the encoder cable. In this case, it may be necessary to replace the cable or connector and pay attention to the fixing of the cable to avoid loosening and damage.
2.Insufficient encoder supply voltage: This can be due to a power failure or losses caused by a large resistance of the transmission cable. In this case, it may be necessary to service the power supply or replace the cables.
3.Absolute encoder battery voltage drops: This is usually accompanied by a noticeable alarm. At this point, the battery needs to be replaced. If the memory of the reference point location is lost, you must perform an operation to return the reference point.
4.Improper encoder cable length: Cables that are too long may result in low supply voltages. In some cases, it may be necessary to shorten the cable or use multi-core parallel power supply.
5.Incorrect model call: If the wrong motor model is used during programming, it may fail due to poor connectors inside the drive, abnormal switching power supplies, or damaged chips. In this case, the motor model ** needs to be called correctly.
6.Driver and related faults: Servo motor encoder failures can also occur due to faulty connectors inside the drive, abnormal switching power supplies, or damaged chips. The drive and its associated components need to be inspected during repairs.
7.The encoder does not rotate flexibly: it can be caused by damaged or clogged bearings. The encoder needs to be dismantled for inspection and to remove foreign objects or replace worn bearings.
8.Increased bit error rate of the encoder: This may be due to a damaged encoder or coding disc. Check the condition of the encoder and the coding disc and whether the gap between them is appropriate, and replace or adjust if necessary.
9.The encoder is unresponsive: This may be due to a malfunction in the encoder's internal circuitry. It is necessary to check the circuitry inside the encoder and repair or replace the faulty parts.