Power Controller with Phase Control and Event Input
The Omron G3PW-A220EU-S is a Type Power Controller from the G3PW series, built for resistive or infrared heater loads where phase-angle or On/Off switching is needed. It accepts a 1 ~ 20A input range from a temperature controller or PLC analog output and drives a solid-state output (2 channels) to the load. Supply voltage is 100 ~ 240VAC, and the chassis-mount package includes a 3-digit red LED display for local readout of current or setpoint. The 1 ~ 20A input range covers the standard 4-20mA loop with headroom, so it works directly with most process controllers or PLC analog outputs without a signal conditioner. The dual solid-state outputs mean it can switch two independent heater zones or one zone with redundant contactors, simplifying the panel wiring.
Deployment Context
Chassis-mount design means it bolts directly to a panel backplate or sub-panel, not a DIN rail. The Event Input feature lets an external dry contact or PLC digital output force the controller into a pre-set power level or shutoff — useful for interlocking with a safety circuit or machine-cycle start.