Technical Manual for EA350 Analog Pulse Type Servo Driver V101 : The temperature sensor of the servo driver is abnormal 248 Poor wiring of external encoder Check if the wiring is proper for the terminals of interface cards and connectors of the external encoder, including integrity of the shielding layer. Reconnect the wire External encoder damage After the wiring problem is eliminated, this alarm still occurs Replace the external encoder Reason for alarm Inspection Handling method Open-circuit or short-circuit occurs to the built-in temperature sensor of the servo driver Check whether the alarm is cleared after power-on again Send it to the distributor or manufacturer for repair