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Industrial Automation

Digital Soft starters RVS-DN - Solcon

RVS-DN line of Low Voltage Soft-Starters.

Which soft starter is considered as the most reliable soft starter in todays’' Industrial and Marine markets? 

The RVS-DN is a severe duty, Full Featured, Motor Protection enhanced, Microprocessor-Based, for Motors 4-3500A, 4-3000KW, 208-690V.
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View these soft starters in demanding environmental conditions check out our Naval, Marine, Industial,  Oil and Gas  examples of Solcon soft-starters in a variety of applications.


RVS-DN Protection Features
  • Start & start inhibit with time delays; 
  • 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);
  • Analogue Ouput (option);
  • When using "Preparation for Bypass" all protective functions remain active.    
RVS-DN Control
  • All inputs & outputs are isolated;
  • Three C/O output relays;
  • Thermistor input;
  • Analogue output;
  • Communication RS 485 with MODBUS RTU or MODBUS Plus protocols;
  • User friendly keypad interface allowing precise settings;
  • Bright LEDs for immediate visual interface;
  • Interactive and informative 4 language LCD for easy trouble shooting;
  • Statistical data;
  • Motor insulation protection;
  • Hardware and software integration to allow starting from diesel-generator.

RVSDN Construction
  • Heavy duty fully rated design (ambient 50°C); 
  • Compact, light weight; 
  • Cost efficient plug-in control module, identical for sizes B-G; 
  • Preparation for bypass contactor (option), maintaining protection after the bypass contactor is closed. 
  • 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 starting & stopping characteristics (special characteristics for Ex motors); 
  • Unique features such as: Pump Control Program, Dual Adjustment, Slow Speed with Electronic Reversing, Energy Save, etc;
  • Torque and current starting & stopping characteristics; 
  • Sophisticated motor protection package with Enhanced features;
  • User friendly, easy installation and operation; 
  • RS485 Communication with MODBUS, PROFIBUS or MODBUS/TCP protocols (others available on request); 
  • Wide 45-65Hz Auto-tracking frequency range combining special software with unique hardware arrangement allowing starting and stopping while the frequency variates (designed for Marine, Offshore and Generators operating under continuous frequency variation;
  • Possibility to operate without bypass contactor at 50°C up to 820A. 


RVS-DN with Motor Protection Features Typical Applications 
  • Pumps (Water utilities, Industry); 
  • Compressors; 
  • Conveyors & monorails; 
  • Mixers & Agitators; 
  • Fans & Centrifuges; 
  • Hydraulic pumps; 
  • Starting from weak Mains supply; 
  • Marine (Thrusters, pumps, fans, refrigeration, compressors, etc..).

Ref. A07723120
F.Fonseca is the representative of Solcon in Portugal.
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