SEW MOVITRAC 31C Installation and Debugging

2 DC bus overvoltage deceleration slope too short prolongs deceleration time

3. High regenerative power of the brake chopper and open circuit of the brake resistor. Check the wiring and technical data of the brake resistor

4. Continuous overload Ixt utilization rate>125% reduces load

6. Overheating inverter reduces power and improves ventilation due to thermal overload

7. Input phase loss (P530 needs to be activated) Check power supply

10 direction error encoder A/A and B/B exchange, motor reverse exchange encoder channel or motor phase line

11 Speed detection encoder connection error or FEN31C not installed. Check the encoder wiring and install the correct option

26. Communication interruption with keyboard or PC without connection. Re plug and unplug the keyboard

27 external terminal programmable input receives external fault troubleshooting source, reprogram terminal

28 INTERBUS fault on-site bus monitoring signal error check bus connection

During the timeout monitoring period of the 34 fieldbus, if there is no master-slave communication, check the communication of the master station and extend P571 or turn off the monitoring

41 FRS lag error encoder polarity error, slope too short, P gain too small Change encoder polarity, extend slope, increase P gain

43 binary output fault output overload (>150mA or>50mA) check output load

54 motor overload, high motor utilization, reduced load, extended slope

59. The target position of the software limit switch exceeds the limit range (IPOS). Check the software limit setting

For unresolved faults, please contact SEW Electronic Services. When repairing, it is necessary to provide equipment serial number, model, service code, application description, motor data, fault symptoms, etc.

Technical Data Summary

6.1 General Technical Data

Protection level: IP20 (EN 60529/NEMA1)

Environmental temperature: 0 ° C~+45 ° C (without derating), derating from+45 ° C~+60 ° C by 3.0% I2 per K

Storage temperature: -25 ° C~+70 ° C; long-term storage requires power on for at least 5 minutes every 2 years

Installation altitude: ≤ 1000 meters without derating; 1000~2000 m, 1% reduction per 100 m

6.2 230V Unit (optional)

Model size Rated output current Recommended motor power (constant torque)

31C005-233 0 3.2 AAC 0.55 kW

31C022-233 1 8.6 AAC 2.2 kW

31C037-233 2 16 AAC 3.7 kW

31C075-233 3 22 AAC 7.5 kW

6.3 400/500V Unit (optional)

Model size Rated output current Recommended motor power (constant torque)

31C005-503 0 2.0 AAC 0.55 kW

31C015-503 1 4.0 AAC 1.5 kW

31C040-503 2 9.6 AAC 4.0 kW

31C110-503 3 24 AAC 11 kW

31C300-503 4 61 AAC 30 kW

When the input voltage is 3 × 500V, the input/output current needs to be reduced by 20% according to the rated value.

6.4 Electronic Data

Analog input resolution: 9-bit ± 20 mV (voltage), 8-bit ± 0.08 mA (current)

Binary input sampling time: 5 ms

Auxiliary 24V output: maximum 250 mA

External 24V input range: 19.2~30V DC

Measurement output: 5V TTL, 100 Hz PWM