Machine tool electromagnet suction cup undercurrent protection circuit
Source: InternetPublisher:难得正经 Keywords: Protection circuit machine tool electromagnet current protection Updated: 2021/07/30
It uses the TWH8751 power switch integrated circuit A as the control element
f= of the relay KA, so the action sensitivity is very high and the safety of the device is improved. The 24V DC power supply is step-down from the 110V power supply of the electromagnetic chuck
.
In the figure, Cr is the electromagnetic chuck, and K is the normally open contact in the electromagnetic chuck circuit. After K is closed, CT will work, and relay
KA will close to make the machine tool feed work. When the electromagnetic chuck current is less than 90% of the rated current (
f can be adjusted by the potentiometer RPi), the relay KA is released, the machine tool feed circuit is powered off at the same time, and the feed system stops working, thus avoiding accidents.
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