6 • Technical Data
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3. TECHNICAL DATA
3.1 Introduction
The RVS-DN is a highly sophisticate
d and reliable soft starter designed for use with standard three-phase,
three-wire and six-wire, squirrel cage induction motors. It provides the best method of reducing current and
torque during motor starting.
The RVS-DN starts the motor by supplying a slowly increasing voltage to the motor. This provides soft start
and smooth, stepless acceleration while drawing the minimum current necessary to start the motor.
The third generation, microprocessor based digital control provides unique features like pump control, slow
speed, electronic reversing and accurate motor protection. RVS-DN models can be supplied with options for
insulation protection, thermistor input & analog output, etc.
The optional RS 485 Communication with Modbus protocol or the optional Profibus protocol enables full
control (START, STOP, DUAL ADJUST, Command, etc.) and supervision.
Advantages at a Glance
Complete line 8-3000A, 220-1200V
Heavy duty, fully rated design
Robust construction
Superior starting & stopping characteristics
Comprehensive motor protection package
User friendly
Line or Inside Delta connection
Rated ambient temperature: 50°C
Unique optional features including:
Motor insulation tester
RS 485 comm. Modbus / Profibus
Thermistor input / analog output
Starting & Stopping
Soft start & soft stop
Current limit
Pump control program
Torque and current control for optimized
starting & stopping process
Dual adjustments - two starting & stopping
characteristics
Slow speed with electronic reversing
Pulse start
Linear acceleration (tacho feedback)
Energy Save for improved power factor
Standard Ratings
230V, 400V, 480V, 600V, 690V, 1000V, 1200V
Motor & Starter Protection
Too many starts
Long start time (stall)
Shear-pin
Electronic overload with selectable curves
Under current with adjustable delays
Phase loss & phase sequence
Under, over & no voltage
Load loss (motor not connected)
Shorted SCR
Starter over-temperature
Displays LCD & LEDs
Illuminated LCD - 2 lines x 16 characters
Selectable languages: English, German,
French
and Spanish (Russian - optional)
Two display modes for basic and advanced
applications
Friendly operation with default parameters
Eight LEDs for quick operational status
Statistical data including:
Total run time
Total number of starts
Total number of trips
Last start current
Last start time
Last trip
Current at trip
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