10
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1. Attach the switch to the actuator or valve. Refer to
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p. 7 for Direct Drive Mark 1 and 4 Models
p. 8 for Lever Drive Mark 1 and 4 Models
p. 9 for Mark 3 Models
2. Remove cover by unscrewing. Take care to keep
threads clean and free from damage.
3. On models 13XXX and 43XXX, the switches are set
at the factory when in the counterclockwise position
as shown. Switch #1 is open, and #2 is closed.
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33XXX refer to pages 9 and 10 for Switch
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4. The potentiometer is positioned at the factory with
the resistance element approximately centered. The
resistance readings in the chart are typical of each
different potentiometer.
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loosen the two lower set screws on the coupling.
While holding the cams in the desired position, rotate
the coupling and potentiometer shaft to the preferred
location. Rotating clockwise reduces resistance
between pins 2 and 1, and increases resistance
between 2 and 3. Rotating counterclockwise
increases resistance between pins 2 and 1, and
reduces resistance between 2 and 3. If the
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to activate move bypass shunt to the other pin.
6HH 3DJHV
for wiring procedure, intrinsic safety
parameters, relevant warnings and schematics.
Potentiometer
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Resistance Between Pins
1RWR1R
1RWR1R
&&:6(7 &:
&&:6(7 &:
1000
2000
5000
10000
20000
2.9
5.8
14.7
29.4
58.8
500
1000
2500
5000
10000
235
471
1178
2354
4708
500
1000
2500
5000
10000
1529
3823
15294
TERMINAL 3
TERMINAL 2
TERMINAL 1
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