User Manual EM303B General Purpose Inverter When inverter trips faults as stated above, press STOP RESET or use reset terminal to clear fault. If the fault is cleared, inverter will return the function setting status. Otherwise, the trip code will be displayed on LED continuously. When faults trip in operation, if fault retry (set by FC-24) is enabled, the inverter will reset fault automatically and try to run after certain setting interval time (set by FC-25). FC-24 sets the retry times of fault reset. If the fault times exceeds the setting value of FC-26(No fault time-lag), the inverter stops retry and keeps in fault status.
Reference of LED Characters LED Characters and the Corresponding English Characters LED numbers and the Corresponding English numbers 166 Trip Trip Cause Corrective Action Code Stator Resistance Error 1. Motor is not connected to the output terminals of inverter. 2. Motor is on load. 3. Motor fails. 1. Check connection between inverter and motor. 2. Motor is offloaded. 3. Check motor. SrE Idling Current Error SIE PID Feedback Loss/SPI Fault/SCI Fault 1. PID feedback loses. 2. Analog terminal of PID feedback is broken down. 3. PID feedback detection time is too short, fault is caused by interference. 4. Internal SPI communication fault. 5. SCI communication fault. 1.
Check the cable between PID feedback sensor and analog terminal. 2. Check if the analog terminal is broken. 3. Increase the value of F4-31. 4. Power-on the inverter again after power failure. 5. Adjust F1-30 communication overtime. EST Output Phase Loss 1. The motor is not connected to the output terminal of inverter. 2. Motor vibrates severely, and 3-phase current is in serious imbalance. 1. Check connection between inverter and motor. 2. Check if the motor is damaged. OlP a b C D E F G H I l A B C D E F G H I L N O p q r s t U H y N O P Q R S T U X Y 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0