Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
2
What It Is
The Chelsea Electronic Overspeed Control (E.O.C.) is an electronic
controller that prevents the Power Take-Off and driven equipment from being
operated at excessive speeds. This is done by automatically disengaging the
Power Take-Off whenever a pre-set overspeed R.P.M. is exceeded.
How It Works
The Chelsea Electronic Overspeed Control (E.O.C.) energizes the solenoid
valve that engages the clutch in the Power Take-Off. The control also
measures the speed of the Power Take-Off and electronically compares it to
the pre-set overspeed R.P.M. setting. As long as the operating speed is less
than the high limit, the Power Take-Off will operate in a normal manner.
If the operating speed exceeds the selected high limit, the control will
automatically de-energize the solenoid valve and the Power Take-Off clutch
will disengage. The clutch will remain disengaged until the speed has been
reduced to the pre-set low limit.
Foreword
Bulletin HY25-1650-M1/US
General Information
Owner’s Manual
Electronic Overspeed Control
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