WMK-4 pulse controller

The WMK-4 pulse controller consists of DC voltage regulator, pulse generator, monostable, digital integrated circuit, gate control, gate push, thyristor output, digital display and other circuits.

NE555 outputs adjustable pulse counting signals and gating signals. The decoding of the counting circuit and the outputs of the ten gates are all handled by a MOS digital integration. The counting input is equipped with an automatic clear "0" delay count. After turning on the power, the count outputs a cyclic count from "0" in sequence. The pulse signal is input to the gate control circuit to control the conduction time of the gate output and also control the conduction time of the thyristor.

After the 220V AC voltage is reduced by half wave rectification, it provides pulse output and display voltage to the thyristor and digital tube. The pulse current output by the thyristor activates the solenoid valve to control the operation of the dust removal equipment.

Use and maintenance of WMK-4 pulse controller

1. The WMK-4 pulse controller inserts a rectangular plug with an output line into the socket at the back of the chassis. One end of the output line is connected to one end of the solenoid valve, and the other end of the solenoid valve is connected to the common line. The wire color is red at the end of the common line.

2. Insert the power plug of WMK-4 pulse controller into a 220V AC power supply.

3. The WMK-4 pulse controller should turn on the power switch and the indicator light should be on.

4. Adjust the pulse interval and pulse width knob of WMK-4 pulse controller until appropriate

5. According to the environmental conditions, regularly unpack the instrument for low-temperature dehumidification and dust removal.

Maintenance and Precautions for WMK-4 Pulse Controller

（1） The output connector is strictly prohibited from virtual soldering and poor contact. The single machine output common line can only be used by a single machine and must not be connected to each other.

（2） The replacement of the fuse cannot exceed 2A, and it is strictly prohibited to replace the fuse with wires or other conductive objects.

（3） The solenoid valve and connecting wires should not have short circuits or leakage phenomena, and should be checked regularly. The ground resistance should be greater than 2 megohms.

（4） When connecting solenoid valves or troubleshooting instruments, please turn off the power to avoid accidents.