Soft starters

The soft-starter VersiStart II [17 – 45 A] was developed for the controlled and low-wear start-up of three-phase induction motors. It reliably reduces starting current and torque, ensures a smooth run-up and thus extends the service life of the motor and drive. The device is microcontroller-controlled, compact and can be easily integrated into existing controllers thanks to pluggable power terminals.

Characteristics

• Two-phase controlled soft starter
• Microcontroller controlled
• Optimized soft start with torque reduction
• √3-Schaltung for more compact design
• Easy installation, for snapping on 35 mm standard rail
• Bridging relays integrated
• Parameterization via three potentiometers (start-up time, start-up voltage, run-off time)
• No additional control voltage required
• no network center conductor (N) required
• spring-loaded terminals on the control side, power-side pluggable connections
• Cooling element temperature monitoring integrated
• Compact design: 45 mm to 32 A, 52,5 mm at 45 A
• Low-cost replacement for star/triangle switches
• Degree of protection IP 20

Functions

• Soft start and soft exit
• Potential-free control input for start/stop
• three separately adjustable parameters: Start-up time, starting voltage, run-off time
• Boost start selectable
• Potential-free relay outputs for operational mode, bridging and malfunction

Options

• Special voltages 230 V / 480 V
• Wide voltage 400–600 V with external control voltage 24 V DC (option B)
• Reporting contact (M): Start soft start to finish soft start
• Engine PTC monitoring (on request)

Technical data (excerpt)

• Mains voltage U_e: 400 V ± 10 % / 50–60 Hz
• Nominal equipment power: 17 A / 25 A / 32 A / 45 A
• Engine power at 400 V: 7,5 – 22 kW
• Start-up time 0,5 – 10 s | Expiration time 0,5 – 10 s
• Starting voltage 40 – 80 %
• Relay output: 3 A / 250 VAC and 30 VDC
• Impact strength: 4 kV
• Ambient temperature 0 – 45 °C / Bearing – 25 – 70 °C
• Weight approximately 1 kg

Preferred areas of application

• Electric pumps and vacuum pumps
• Fans and fans
• Drilling cranes and extraction equipment
• Stirrers, centrifuges, saws and conveyors
• Machinery for working wood and metal, and grinding machines

Note:

When using IE3-Motoren, the higher starting and braking currents must be taken into account. We recommend that soft starters and brake devices should generally be dimensioned to a higher power level.