The Movomatic EM 261/A is a high‑precision gap control sensor module used in industrial automation for measuring spacing or alignment between moving parts. Common issues reported with this model include intermittent signal loss due to damaged input contacts, corrosion on the probe tip leading to inaccurate readings, and internal board failures caused by overvoltage spikes from the drive system. For troubleshooting, first verify that the supply voltage matches the specified ±12 VDC range and check for any visible damage or loose connections on the sensor’s input/output terminals. Next, review the error logs or diagnostic LEDs on the module to identify fault codes, then perform a continuity test across the probe contacts while applying a known reference gap to confirm signal integrity.[oss-gpt-20b]