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User Instructions
Part Number IOM – 87376-7
Parts Overview:
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This compact fail-safe actuator can be built as a version for "fail-safe open" (counter clockwise
direction of rotation when looking at the fitting shaft) or "fail-safe close" (clockwise direction
of rotation). It is even possible to subsequently change the fail-safe direction (separate manual
available). Some assembly work is required. Having this conversion performed at our factory is
recommended, however.
Figure 3
Figure 4
PM Motor
Worm Gear Stage
Planetary Gear Train
Ball Screw
Operating Current Brake
Rack and Pinion Gear
Spring Assembly
End Stop
Fitting Shaft
Fail-Safe Open Version
Fail-Safe Close Version
July 2016, Rev 1.
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