Low Voltage Soft Starters: RVS-DN


Ratings: 8 - 3000A, 220-1200V (1200V up to 820A)
The RVS-DN is a heavy duty, full featured Digital Low Voltage Soft Starter.

Digital Control in a Rugged Package

The RVS-DN is a heavy duty, advanced, highly reliable Soft Starter. Designed to operate in the most severe applications such as Marine and Mining. It offers the widest range of Low Voltage Power, starting from 8A up to 3000A. The microprocessor based digital control has advanced features such as pump control, slow speed, electronic reversing and enhanced motor protection.

Advanced Features

  • Range 8 - 3000A, 220-1200V (1200V up to 820A)
  • Heavy duty
  • Robust construction
  • Highly advanced starting & stopping characteristics
  • Comprehensive motor protection package
  • User friendly set up and operation
  • Line or Inside delta connection
  • Ambient operating temperature: up to 60°C
  • Motor insulation tester
  • Communication: Modbus, Profibus, Devicenet
  • Thermistor input
  • Analog output
  • Optional 24VDC output power supply
  • Various marine approvals available

Advantages at a Glance

  • Eliminates high inrush current and damaging mechanical shock
  • Third generation microprocessor circuitry
  • Heavy duty design: 50°C ambient temperature
  • Soft, stepless acceleration & deceleration
  • Power factor capacitors can be connected directly to the upstream contactor 
  • Unique features such as: Pump Control Program, Dual Adjustment, Slow Speed with Electronic Reversing, Energy Saver, etc.
  • Torque and current starting & stopping
  • Sophisticated motor protection package with Enhanced features
  • User friendly, easy installation and operation
  • RS485 Communication with MODBUS, PROFIBUS or MODBUS/TCP protocols options
  • Wide 45-65Hz Auto-tracking frequency range (designed for Marine, Offshore and Generators operating under continuous frequency variation)
  • Can be operated without bypass contactor at 50°C up to 820A 
  • Designed to meet marine industry standards

Typical Applications

  • Pumps (Water utilities, Industry)
  • Compressors
  • Conveyors & monorails
  • Mixers & Agitators
  • Fans & Centrifuges
  • Hydraulic pumps
  • Starting from weak power sources
  • Marine (Thrusters, pumps, fans, refrigeration, compressors, etc.)
  • Protection
  • Control
  • Construction
  • Start & start inhibit with time delay
  • Long start time (Stall protection)
  • Electronic shear-pin (Jam) with adjustable curves and delay
  • Electronic overload with selectable curves
  • Under current with programmable auto reset
  • Phase loss
  • Phase sequence and Under/Over frequency
  • Under/Over voltage with programmable auto reset
  • Load loss (indentifying broken drive belt, lack of water in a well, etc.)
  • External fault
  • Shorted SCR
  • Starter over temperature protection
  • Motor insulation test (option)
  • Motor thermistor (option)
  • Analog Ouput (option)
    RVS-DN Controller
    RVS-DN Controller
  • All inputs & outputs are isolated
  • Three C/O output relays
  • Thermistor input (option)
  • Analog output (option)
  • Communication RS 485 with MODBUS RTU or MODBUS Plus protocol options
  • User friendly keypad interface allowing precise settings
  • Bright LEDs for immediate visual interface
  • 4 language LCD for easy trouble shooting
  • Statistical data

  • Heavy duty fully rated design (ambient 50°C)
  • Compact, light weight
  • Cost efficient plug-in control module, identical for sizes B-G
  • Provisions for adding customer supplied bypass contactor