Frequency converter for stepless speed control of fans. With mains filter and additional terminal block. With motor protection function via thermal contact or PTC thermistor. Control inputs: galvanically isolated, PLC compatible, freely programmable. Setpoint inputs: 0-5 V, 0-10 V, 0(4)-20 mA with voltage and current offset calibration function. Setpoint output: 1 analog output 0 - 10 V. Digital inputs: 6, some freely programmable. Signal outputs: 2, some freely programmable. Digital outputs: 2 potential-free outputs for fault and operating messages (changeover contact). Connections via metric screw connections 2 x PG 12, 2 x PG 16. Factory presets for 15 programmable fixed speeds. Service life approx. 80,000 hours at 80 to 85% rated load. Suitable for the product groups DSK, DAS, DSQ, EDR 56/63/71 and all DZ... with phase insulation (special version). ST EC 010 can also be used for remote maintenance. Article: MFU 4, Rated voltage: 3 x 380 V to 480 V (+/- 10%), Mains frequency: 50 Hz / 60 Hz, INom: 4.3 A, Recommended motor power: 1500 W, Protection class: IP 54, Housing material: Sheet steel, galvanized, Color: light gray, similar to RAL 7035, Weight: 5.65 kg, Weight with packaging: 7.05 kg, Width: 200 mm, Height: 350 mm, Depth: 157 mm, Width with packaging: 295 mm, Height with packaging: 355 mm, Depth with packaging: 275 mm, Ambient temperature: -10 °C to 50 °C