Multiple SSR/SCR power control driver

Vari-Watt

Multiple SSR/SCR power control driver

Allows Manual Control of Heaters using SSR Solid State Relays
Converts Analog, Digital or Potentiometer Signals to Trigger SSRs or a contactor
DOT Switches On and Off Zero-Crossover SSR’s to Accurately Control Heat
Load Management Feature Evenly Distributes Output Over Up to 4 Outputs
Auto/Manual Feature
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The NEW Vari-watt Power controller accepts a control signal input and produces output signals that can drive up to 4 Zero-Crossover Solid State Relays or a Contactor. The signal to the solid state relays implements Chromalox DOT firing which allows for switching as ac-curate as every 3 cycles (50msec). In addition, the 4 outputs evenly distribute power using the Vari-Watt’s Load Management Feature.

Select from 3 analog control inputs of 4-20ma, 0-5 VDC or 0-10 VDC to drive up to 4 SSRs. The SSR’s will fire in succession and evenly distribute the power draw via the Vari-watt’s Load Management Feature.
The Vari-Watt can accept a digital input of a 4-12 VDC 1 sec time proportion signal from a controller, and convert it to a 15sec cycle time 240 VAC output for a contactor or a distributed output with Load Management to up to 4 SSR’s.
Auto/Manual Control – A jumper or contact closure allows the user to select between Manual Control using the 1K Pot or Auto Control using either the 4-20ma, 0-5 VDC or 0-10 VDC control inputs.
Robust Circuitry – Specially protected components reduce the effect of external harmonics on the power line.

Select a Part

Part #	Description
313947	POT 10K FOR VARIWATT CLAS	Buy Now
339768	VARI-WATT, 0113-10237 ASS	Buy Now

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