Products

Supply voltage: 380, 690 V ±10%
Frequency: 50/60 Hz ± 4 Hz
Control power supply: 220–240 V ±10%
Control inputs and outputs: 220–240 V ±10%
Load: 3-phase, asynchronous squirrel cage motor
Operating temperature: 0 °C to 50 °C
Maximum starts per hour: 30
Pump control curves: 6 locally selectable curves to prevent overpressure during start-up and hydraulic shock during shutdown
Start pulse duration: pulse 80% Un for an adjustable time of 0–1 second to start high friction loads
Initial voltage: 10–50% Un
Current limiting: 100–400 % of full motor load
Acceleration time: 1–30 seconds
Braking time: 1–30 seconds
Second start-up characteristic: secondary start and stop characteristics for initial voltage, current limit, acceleration and deceleration time, full load motor current
Energy Save: activated when the motor is under light load for an extended period of time
Torque at low speed: the maximum torque produced when the motor is operated at 1/6 of rated speed for a maximum of 30 seconds
Linear acceleration: 12 selectable curves - define the starting mode to improve the linearity of acceleration

- reciprocating and screw compressors
- agitators, centrifugal and submersible pumps
- fans
- conveyors
- ball mills
- centrifuges
- crushers
- extruders
etc.

This series provides soft start and stop of the electric motor, has advanced protection functions, can operate in heavy environmental conditions (operating temperature from 0 to +50 °C). The SFT30 has 3 digital inputs and 3 special inputs (energy storage, generator operation, 2 parameter sets, external fault, fault reset), 3 relay outputs, 1 analogue input (thermistor). In addition to the standard functions, the device has a number of additional functions: forced diesel generator operation, mechanical brake control, dynamic braking, event log.