Solenoid fail-safe using current feedback as a diagnostic input

Details Solenoid fail-safe using current feedback as a diagnostic input Solenoid fail-safe using current feedback as a diagnostic input

1997-12-18

2000-08-29

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

340657, G08B 2100

Patent

active

061115142

ABSTRACT:
The current through the coil of a solenoid valve is monitored for a deflection which is generated when the valve armature shifts in response to the current being applied to the coil. A lack of detection of the deflection is indicative of a solenoid malfunction and causes generation of an alarm signal.

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