The GS40 series power controllers are designed to proportion electric power to resistive and inductive loads , such as ovens, furnaces, transformers, heat sealers, etc. The controllers consist of power semi-conductors (SCRs), properly-sized heat sinks, trigger circuit. The power controller accepts a 4 to 20 mA dc output from a temperature controller or can be supplied with manual option using a remote potentiometer.
The GS40 Series controllers offers two methods of proportional control: Zero crossing switched and Phase angled fired.
With the Zero crossing switched mode, the controller switches on complete cycles of the ac supply voltage. The trigger circuit is designed to turn on the SCRs as close as possible to the point where the AC sine wave crosses through zero. In effect, the line voltage is turned on and off and applied to the heaters in whole cycles. With an input of 4 to 20 mA, the output will be off below 4 mA and full on at 20 mA.
Proportioning action is obtained by varying the number of cycles on to the number of cycles off. The output will vary from one cycle on and nine cycles off at low input, to all cycles on at maximum input. This output is integrated by the heaters which produce a smoothly proportioning heat output that varies directly with the input signal. In this control mode, the waveform of the output voltage is a pure sine wave, so you don’t have to worry about harmonic generation.
With the Phase angle fired mode, the power to the load is controlled by governing the point of turn on (firing) of each half cycle of the full AC sine wave.In this control mode, the waveform of the output voltage is not a pure sine wave, with the input of 4-20mA signal, the output voltage chopper, will produce a certain amount of harmonics, when the full power output, the output will be sine wave.
The features of GS40 scr power regulators as below:
1.Built-in high performance microcontroller.
2.Low power consumption design.
3.Wide main voltage input(AC110–440V).
4.Compact design, small dimension.
5.Support 4-20mA,0-10v analogue input.
6.Perfect protection: Phase lose, overheat, overcurrent, load lose.
7.Modbus communication.
Post time: May-06-2023