Polatech EMC Sensor is an industrial rotary encoder used in servo drives and motion control systems to provide position feedback. Common failure modes for this class include loss of signal due to worn contacts, damaged magnetic read heads, or cable insulation breakdown; power‑supply noise can also corrupt the output pulses. Start by verifying that the sensor receives its rated supply voltage (typically 24 VDC) and checking the ground reference; then inspect the wiring harness for fraying or shorted conductors, and use a logic analyzer to confirm pulse integrity against expected encoder resolution. Finally, review any error codes from the host controller that indicate “no signal” or “out of range” conditions.[oss-gpt-20b]