Emerson FieldQ Series Product Data Sheet page 33

Product data sheet
1.604.13 Rev. 4 Page 7 of 9
October 2018
Control Module Options
Local Manual Control
Description
For commissioning, emergency or maintenance purposes,
the QC40 control module can be supplied with one or two
Manual Control options. These can operate the spool valve(s)
inside the module and as such operate the actuator, when
there is air pressure available, but no control signal or power
supply.
Notes:
- One Local Manual Control is required for normal
operation of Double acting or Spring return actuators.
- For Double acting actuator with a Fail-in-last position
function, a second Local Manual Control can be
mounted.
- These options can be ordered together with the Control
Module or as a kit to be mounted later.
- For option ordering codes, see page 7
45°
Fig. 10. Local Manual Control option
FieldQ
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Speed Control
Description
The QC40 control module can be supplied with a Speed
Control option. One throttle is required for Spring Return
actuators and up to two for Double Acting actuators.
The speed control throttle controls the air flow in and out of
an air chamber and as such limits the speed of the "Opening"
and "Closing" stroke simultaneously. This throttle consists
of :
1. Nut cover
2. Main throttle with set screw.
Notes:
-
-
-
Location for 2nd
Local Manual Control
Default location of
Local Manual Control
Lock
Unlock
Fig. 11. Speed control options
For Spring Return actuators with one speed control
throttle, it is not possible to set both the stroke cycle
times to an equal time.
Four Double Acting actuators it is possible to mount two
speed control throttles.
The actual stroke cycle times depend on the actual load
on the actuator during the different strokes.
FieldQ
Spring Return:
Top entry only.
Double Acting:
Bottom and/or top entries.
1 2