Greenheck El-O-Matic E and P Series - Manual (Page 8)

6.
Installation - Linear Actuators
Pneumatic Connections - Double acting
Assuming a standard installation, direct acting with an
increasing signal to open the valve (rising spindle).
Before connecting any air supply make sure that
the air available is clean dry instrument air filtered
to at least 25 microns.
1. Connect an appropriate piece of air tubing between
the port 1. on the positioner to the “A” port on the
actuator. (The “A” port is the one that, when air is
applied to it, opens the valve).
2. Connect an appropriate piece of air tubing between
the port 2. on the positioner to the “B” port on the
actuator. (The “B” port is the one that when air is
applied to it, closes the valve).
3. Connect an air supply to the positioner port marked
“S”.
4. If the positioner is required to meet enclosure rating
IP54, be sure that the "Exhaust" port is connected
with elements which prevent the input of water and
give no pressure rising inside the housing because
of throttling of exhaust flow (no sintered filters, but a
piece of tube or a special IP65 Exhaust plug with
diaphragm
5. Connect port "Instrument" with pneumatic input
signal.
Note: For a reverse acting assembly, both the air
connections and the cam must be reversed -
see page 7.
Pneumatic Connections - Single acting
Assuming a standard installation, with direct acting an
increasing signal to open the valve (rising spindle).
Before connecting any air supply make sure that
the air available is clean dry instrument air filtered
to at least 25 microns.
1. Connect an appropriate piece of air tubing between
the port 1. on the positioner to the “A” port on the
actuator. (The “A” port is the one that when air is
applied to it, opens the valve).
2. Connect an air supply to the positioner port marked
“S”.
3. If the positioner is required to meet enclosure rating
IP54, be sure that the "Exhaust" port is connected
with elements which prevent the input of water and
give no pressure rising inside the housing because
of throttling of exhaust flow (no sintered filters, but a
piece of tube or a special IP65 Exhaust plug with
diaphragm
Double acting
Single acting
4. Connect port "Instrument" with pneumatic input
signal.
Note: For a reverse acting assembly, both the air
connections and the cam must be reversed -
see page 7.