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Mount the switch as necessary, concentric and
perpendicular over the rotating shaft that is to be
monitored. Direct drive yokes are available in many
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from spring temper stainless steel. Do not attempt to
fabricate your own yokes.) Shaft drive units require an
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shaft being monitored.
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1. Remove cover by unscrewing. Take care to keep
threads clean and free from damage.
2. Clockwise rotation of the yoke or shaft will move the
bar up, counterclockwise moves it down.Switches are
set at the factory for approximately one revolution of
the yoke or shaft to actuate switch #1. Notice, that the
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that cam screw to location D, three additional
revolutions of the yoke or shaft will be required to
actuate #1 switch. Moving the cam screw to holes C,
B or A will add three revolutions for each location
moved, until 13 revolutions are required between
switch #1 and 2 actuation.
3. The cam screw for switch #2 in location A. By moving
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added for each location change.
4. Rotate the switch slowly through the full cycle several
times before tightening the bolts securely. Observe
the rotation for signs of yoke or shaft misalignment
or binding with the actuator shaft. Correct as
necessary, then tighten the mounting bolts and
recheck alignment.
5. The following chart shows the various combinations
of screw positions and resulting revolutions between
switch actuation.
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revolutions or partial revolutions can be selected by
turning the cam screws in or out when located at the
nearest location shown above. Any partial number of
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for wiring procedure, intrinsic safety
parameters, relevant warnings and schematics.
SHAFT DRIVE
YOKE DRIVE
CLOCKWISE
CAM SCREWS
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5HYROXWLRQV
Switch #1 Switch #2
Between Switch
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(
D
C
B
A
A
A
A
A
A
D
A
A
A
B
C
D
(
1
4
7
10
13
19
22
25
