2-14
2-6-3. Attaching double-acting SVP to a diaphragm actuator
Reverse-acting actuator
Connect
OUT1
of the Reversing Relay to the bottom actuator air
port
Connect
OUT2
of the Reversing Relay to the top actuator air port
Direct-acting actuator
Connect
OUT1
of the Reversing Relay to the top actuator air port
Connect
OUT2
of the Reversing Relay to the bottom actuator air
port
2-6-4. Attaching double-acting SVP to a rotary actuator
Reverse-acting actuator (clockwise rotation with
increased pressure)
Connect
OUT1
of the Reversing Relay to the actuator chamber
that rotates the trunnion clockwise with added pressure
Connect
OUT2
of the Reversing Relay to the actuator chamber
that rotates the trunnion counter-clockwise with added pressure
Reverse-acting actuator (counter-clockwise rotation
with increased pressure)
Connect OUT1 of the Reversing Relay to the actuator chamber
that rotates the trunnion counter-clockwise with added pressure
Connect OUT2 of the Reversing Relay to the actuator chamber that rotates the trunnion
clockwise with added pressure
If the actual air piping is different than described above, the functions of the SVP as a positioner
will not be affected. However, various valve and SVP diagnostics usually performed with the
Commstaff will not return accurate information. To enjoy the capabilities of the SVP to the
fullest, piping should match the diagrams and instructions above to maintain the relationship
between the parameter settings described throughout this user manual.
Lever
Valve
direction
Control Valve
AVP Setting
Actuator
Valve action
Up
Down
Shut
Open
(Up
Down)
Direct
Shut 4 mA, Open 4 mA
Reverse
Reverse
Reverse
Shut 4 mA, Open 4 mA
Direct
Reverse
Shut
Open
(Down
Up)
Direct
Shut 4 mA, Open 4 mA
Direct
Direct
Reverse
Shut 4 mA, Open 4 mA
Reverse
Direct
Summary of Contents for 100 Series
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