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Manual Operation; Auxiliary Switches - Honeywell M7410E Product Data

Small modulating linear valve actuator

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M7410E SMALL MODULATING LINEAR VALVE ACTUATOR

MANUAL OPERATION

Actuators with the OS-number M7410E2... and M7410E4...
feature a hexagonal key hole for manual operation. For more
comfort, an additional knob for manual adjustment is packed
separately. To prevent valve damage, operation is permitted
only when there is no power applied to the motor.
4 mm
Fig. 6. Manual operation
COMMISSIONING ADVICE
A functional check of the valve actuator can be carried out by
changing the Y input signal. The movement of the actuator
stem (Fig. 7) indicates whether the valve is opening or
closing. If the direction of travel is not correct, the
direct/reverse-switch must be reset.
Fig. 7. Movement of the actuator stem

AUXILIARY SWITCHES

The actuators with the OS-number M7410E4022 and
M7410E4033 feature 2 auxiliary switches. Each switch has
its own cable. Auxiliary switch S1 with fixed switchpoint when
the stem position is in. Auxiliary switch S2 with adjustable
switchpoint when the stem position is out.
EN0B-0097GE51 R1004
17.8 mm
11.7 mm
Fig. 8. Auxiliary switch cables
Adjustment of Auxiliary Switch 2
The auxiliary switch should be adjusted by a skilled person,
only. Move the actuator to the position where the switch is to
be operated. Cut the plastic skin with a sharp knife. The
adjustment screw can be accessed below the skin. Turn the
screw clockwise until the end stop is reached. Turn the screw
counterclockwise until the switch point is achieved. To check
that the required position has been set, move the actuator.
Finally, seal the adjustment hole with a piece of tape.
Fig. 9. Adjustment of auxiliary switch S2
4
a
b
c
a
b
c

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