Magnetek – Reduced Voltage Soft Starters
RVS-DN Digital Soft Starter

Joliet Technologies is now offering the Magnetek Line of Soft Starters.

Magnetek Reduced Voltage Soft Starters 

RVS-DN Digital Soft Start

Digital Soft Start 8-2700A, 200-600 Volts Heavy-Duty, Fully Featured

Advantages at a glance

  • Standard Ratings: 8-2700A, 200-600V
  • Optional Voltages: 380, 690 and 1000V
  • Heavy duty, rated for 50°C
  • Superior starting and stopping characteristics
  • Comprehensive motor protection package
  • User-friendly programming menu
  • Operates off stand-by generator power supply

Magnetek RVS-DN-8-72A Digital Soft Start

Performance Features

  • Soft start and soft stop
  • Current limit
  • Pump control program
  • Torque and current control for optimized starting and stopping
  • Jog with electronic reverse
  • Pulse start for high break-away torque
  • Linear acceleration (requires tach feedback)
  • Four modes of fault reset

Protection Features

  • Programmable maximum starts
  • Stall detection
  • Electronic shear pin (jam)
  • Electronic overload with selectable curves
  • Under current
  • Phase loss and phase sequence
  • Under and over voltage
  • Load loss (motor not connected)
  • Shorted SCR (Silicon Controlled Rectifier)
  • Over-temperature

Magnetek RVS-DN-1100-1800A Digital Soft Start


LCD & LEDs Displays 

  • LCD-2 lines x 16 characters
  • Selectable languages:
    English, German, French and Spanish
  • Two display modes for basic and advanced applications
  • User friendly operation with default parameters
  • Eight LEDs for quick operation status

Magnetek RVS-DN Digital Soft Start LCD & LEDs Displays

Available Statistical Data
Data is stored in NV RAM, and is retrievable via keypad or serial communication

  • Total run time
  • Total number of starts
  • Total number of trips
  • Last start current
  • Last start time
  • Last trip
  • Current at trip

Magnetek RVS-DN Digital Soft Start Available Statistical Data



  • Communication Protocal; RS-485, MODBUS, PROFIBUS or MODBUS-TCP/IP
  • Motor insulation test-monitors motor insulation when motor is stopped, with alarm and start inhibit set points

Magnetek RVS-DN-105-170A Digital Soft Start

  • Analog output-related to motor’s current;
    selectable 0-20mA, 4-20mA and 0-10VDC
  • Thermistor input, selectable as PTC or NTC
  • Preparation for Bypass-bus bar arrangement to maintain protection when bypass is closed
  • Conformal coating for printed circuit boards
  • Back-lit LCD
  • Tach feedback card for synchronized multi-motor starting

Magnetek RVS-DN-210-390A Digital Soft Start


Pump Control
Designed to prevent over-pressure during starting, and water-hammer during stopping. Six field-adjustable starting and stopping curves with adjustable final torque point.
Typical applications: Pumping to a high elevation or against counter torque. 

Jog with Electronic Reverse
Motor can be operated at 1/6 of rated speed for 30 seconds. Direction is reversed electronically, without contactors.
Typical applications: Positioning, maintenance and sewage pumps-releasing jam conditions by reverse rotation. 

Energy Saver
Supply voltage to the motor is reduced when motor is lightly loaded. The RVS-DN lowers the rotating magnetic field intensity, improving the power factor and reducing power consumption.
Typical applications: Piston Compressors operating less than 50% of the duty cycle in less than 50% of their FLA current. 

Auxiliary Relays
Programmable relays, 3 Form C, 8A, 220 VAC

  • Immediate with adjustable on and off delays, can be dedicated for shear-pin (jam) protection
  • End of acceleration with adjustable “on” delay
  • Fault, programmable as fault or fault fail-safe operation
  • Low motor insulation alarm (optional) Optional Communication Protocals

Optional Communication Protocols

  • MODBUS-enables setting, control and supervision
  • PROFIBUS DP-enabling control and supervision
  • MODBUS-TCP/IP- supported according to “Specification 1.0,” via standard RJ45 computer network connector (TBD)

Magnetek RVS-DN Digital Soft Start Optional Communication Protocols

Optional Analog Board
Two field programmable functions:

  • Thermistor input, PTC or NTC
  • Analog output, related to motor’s current, programmable as 0-10VDC, 4-20mA, 0-20mA
Optional Motor Insulation Tester
A unique feature for submersible pumps or motors installed in humid and harsh environments, the system measures motor insulation integrity when the motor is not running. Two programmable levels are available:

  • Alarm level, adjustable 0.2-5 MΩ
  • Fault level, adjustable 0.2-5 MΩ, prevents starting when insulation is below an acceptable level

Magnetek-Uncommon Power - Industrial Controls Group

Copyright © 2004
Information Provided by:
Magnetek ICG
N49 W13650 Campbell Drive
Menomonee Falls, WI 53051
Toll Free: 800-288-8178
Fax: 262-783-3510

Call Joliet Technologies TODAY 

If you have any questions concerning Magnetek’s line of Soft Starters or related products, please contact us by:
Phone (815) 725-9696,
Toll Free (866) 492-9888,
Fax (815) 725-9393 or

On-Line Quotation Form

On-Line: Digital Drive Price Quotation Form

Joliet Technologies custom packages, integrates and engineers AC Variable Frequency Drives (VFD), DC Variable Speed Drives (VSD) and AC Drive Controllers using top of the line manufacturers, like ABB, Emerson-Control Techniques, Siemens, Fincor, Avtron and Magnetek. Our custom drive packages are built to your specifications for your application. We specialize in large horsepower drive systems (500Hp and above). Call us at (815) 725-9696 or fax us at (815) 725-9393 or e-mail us or fill out an RFQ with your requirements. Serving the greater Chicagoland area and the World.