Silence, Efficiency without compromise and full compatibility
The DSV Selpro series marks a new frontier in control that is fully compatible with ventilation systems with three-phase AC motors.
Based on hybrid, sinusoidal voltage step technology, it was designed to provide smooth, completely silent control, with no harmonic distortions (THD=0%) and fully compliant with European EMC regulations.
Unlike the inverters and the phase-cut control controllers, DSV guarantees the total absence of noise and electrical noise, even with standard asynchronous motors.
Thanks to digital sequential switching at 6+2 levels, each voltage change is made on a progressive basis through autotransformers, with soft-start management at every step, reducing power spikes and mechanical stresses on the fan motors.
DSV is an advanced electronic controller, designed for accurate, silent and efficient control, ideal for HVAC/R applications like dry coolers, condensers, chillers and ventilation systems with high speed asynchronous motors .
DSV is available in proportional Master or Slave versions, and can power AC motor units up to nominal 48A RMS, with three-phase 400 Vac power. It is compatible with all high speed motors, and has an IP55 container, protected against dust and water.
Operational flexibility and customization:
Supports 2 independent setpoints and 2 parameter sets that can be customized to manage speed ramps, voltage jumps, nighttime limits, day/night mode and seasonal logic. The control channel can be chosen automatically according to the higher of the 2 analog inputs available.
Intelligent management of adiabatic systems:
DSV was designed for the advanced control of adiabatic systems, with proportional 0-10Vdc outputs for pumps or inverters and an ON-OFF command through relays which can be started up according to the temperature, timers or ambient value limits. The synergy between ventilation and evaporative cooling ensures maximum efficiency, even in the most challenging conditions.
Advanced diagnostics and reliability:
It has an event register with an internal real-time clock (RTC) to track the operational transitions, the alarms and the control statuses. The operation parameters can be accessed through the Modbus RTU interface, facilitating integration with BMS systems and the remote operating management. The electronic protections against power surges, overloading, blocked fans and power supply errors make it ideal for critical systems with high service continuity requirements.
DSV is the complete solution for the robust, efficient, intelligent control of three-phase motors, for those who seek silence, reliability and connectivity.
Silent, efficient, and easy
Silent ventilation and three times as reliable.The most environmentally friendly solution and compliant for three-phase AC motors: no active filter or EMC required, no noise, no overheating, complete compatibility, plug & play installation and fan life extended to three times longer.
Inputs, outputs and connectivity
- 3 configurable analog inputs, compatible with 4-20 mA, 0-10 V, 0.5-4.5 V transducers and NTC probes (-10° / 90°C), with automatic selection of the main value.
- Isolated Modbus RTU interface for connection with BMS systems or supervisors.
- 2 0-10Vdc programmable outputs for slave devices or for the proportional management of the adiabatic system.
- 6 on/off programmable auxiliary contacts for operating functions like remote Start/Stop, setpoint change, nighttime limits, reverse mode, TK management and spray activation.
- 3 configurable relays to manage the alarms, warnings and the adiabatic system cycles.
Special features
- Perfectly sinusoidal VAC voltage output (THD = 0%), without noise transferred or radiated with Soft-start on every step and no heat or electrical stress on the motor, the Clean-power technology prevents power surges or spikes with the life being extended up to three times longer
- Works with high speed, three-phase AC motors, even without external rotors and can be installed by just one operator (up to 48 A)
- No active filters for harmonics
- No sinusoidal filters for micro-waves
- No EMC filters
- No shielded cables
- No motor-induced overheating
- The device offers 2 control setpoints that can be set to the minimum or maximum limit with the option of configuring 2 parameter sets that can be customized to include nighttime limits, speed jumps, maximum and minimum speeds, acceleration ramps and other operating parameters to manage the various requirements on a flexible, adaptable basis.
2 0-10V outputs for one or more units to act as Slaves to a main (Master) unit, or for the management of an adiabatic system with a set of specific parameters.
- 0-10 Vdc
- For remote access to the parameters, to track events and advanced management through external supervision systems
- Event register for controller errors and warnings, fan errors, change of On/Off input status, On/Off output status, timed registration of controller status
Technical specifications
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