Many users in the use of silicon controlled rectifier module is all don't know how to control the heating thyristor
module, then by the thyristor module small make up to introduce the two control of thyristor module heating mode: 1.
Phase shift trigger heat conduction Angle of silicon controlled rectifier module has been adjusted so that the voltage changes, so as to adjust the heating power;
Zero passage trigger heated known as solid state relay, when heated, voltage does not change, is actually a pulse on-off signal.
In general are selected phase shift trigger thyristor module, however, the frequency of the phase shifting trigger for grid disturbance, power performance is outstanding, but the general industrial occasions it doesn't matter, because according to the practical experience, as long as no longer heater ipsilateral using oscilloscope kind of requirement of the power system frequency, high precision instrument will not have what matter.
Moreover, thyristor module is to reduce dynamic voltage phase shift heating, so is good to extend the service life of heating element.
Zero passage trigger simple and stable, usually saves a trigger board.
Thyristor trigger signal is usually 0 - module
Or 1-5 v
5 v pulse.
Do not recommend using s7-200 high speed output control.
Common practice is to temperature control module, first the thermocouple or heat resistance temperature signal to PLC, PLC in the pid (
The procedure is not hard to)
, 4 - output
4-20 ma signal
20 ma signal sent to triggered thyristor module board, make the heating power thyristor module control thyristor trigger board module.
Thyristor module forever only a little more than a rival, is more than a little thought for the customer.
If interested in our silicon controlled rectifier module or there is doubt, welcome your consultation.
We wholeheartedly for your service.
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