Omron G3PW, User Manual

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Overview of G3PW Power Controller Section 1-1
1-1 Overview of G3PW Power Controller
The G3PW Power Controller is a thyristor-type single-phase power controller
that enables precise temperature control. It accepts a continuous proportional
output of 4 to 20 mA or 1 to 5 V from a temperature controller to execute
phase control or optimum cycle control.
Just as with a solid state relay (SSR), ON/OFF control can be executed by
inputting a time-proportional output or ON/OFF output (i.e., voltage ON/OFF
signals) from a temperature controller.
Initial settings (output mode, input signal type, event input settings, etc.) and
adjustments (duty settings, soft-start up/down settings, etc.) can be made by
using keys on the front panel. The 7-segment display on the front panel can
also be used to monitor items such as the input value (%), output value (%),
phase angle (%), and load current (A) (see note).
Note Constant-current Models only.
G3PW Power Controllers come in two models: Constant-current Models and
Standard Models. Constant-current Models provide current detection func-
tions (constant current, current limit, overcurrent detection, and heater burn-
out detection) and serial communications (including connections to the EJ1
Modular Temperature Controller). Heater burnout detection is based on the
heater resistance rather than on the load current, making detection more
accurate.
Temperature
controller
Measured
temperature
Temperature sensor
Heater
Input value (4 to 20 mA or 1 to 5 V)
Continuous proportional
current output (phase control
or optimum cycle control)
G3PW Power Controller