SOLENOID VALVE CONSTRUCTION/OPERATION


BHE051321101T06

Construction

• The construction of all solenoids is the same, but the polarity of the positive and negative terminals is different.

1
Output port (solenoid pressure)
2
Drain port
3
Supply port (pilot pressure)
4
Normal low

Operation

Normal high

• De-energized (OFF) or duty 0%

– Solenoid pressure is supplied to the output port because the output port (solenoid pressure) and the supply port (pilot pressure) connect in the solenoid.

• Energized (ON) or duty 100%

– Solenoid pressure is drained because the output port (solenoid pressure) and the drain port connect.

1
De-energized (off)
2
Energized (on)
3
Output port (solenoid pressure)
4
Supply port (pilot pressure)
5
Drain port

Normal low

• De-energized (OFF) or duty 0%

– Solenoid pressure is drained because the output port (solenoid pressure) and the drain port connect in the solenoid.

• Energized (ON) or duty 100%

– Solenoid pressure is supplied to the output port because the output port (solenoid pressure) and the supply port (pilot pressure) connect in the solenoid.

1
De-energized (off)
2
Energized (on)
3
Output port (solenoid pressure)
4
Drain port
5
Supply port (pilot pressure)