Masoneilan SVI II AP Installation and Maintenance ... - GE Energy

Connecting the Air Supply
Installation and Set Up
Connecting the Air Supply
After the tubing is installed, use the following procedure to connect the air supply.
1. Use a supply of clean, dry compressed air to the filter regulator.
2. Turn on the air supply.
3. Adjust the filter regulator.
4. Supply pressure must be 5 psi - 10 psi (.345 bar - .69 bar)
(34.485 - 68.97 kPa) greater than the spring range of the actuator but may not
exceed the rated actuator pressure. Refer to the valve or actuator instruction
manual.
Wiring the SVI II AP
The procedure below outlines wiring the SVI II AP.
WARNING
Comply with current national and local regulations for
electrical installation work.
Comply with national and local explosive atmosphere
regulations.
Before carrying out any work on the device, power off the
instrument or make sure that the local conditions for
potentially explosive atmosphere permit the safe opening
of the cover.
Connecting to the Control Loop
The SVI II AP digital valve positioner MUST BE grounded according to local
regulations. It is important to maintain correct polarity at all times, otherwise the
positioner may not operate properly. Physically connect the SVI II AP to the control loop
using a cable specified by the HART Communication Foundation. A shielded cable is
recommended.
To communicate using HART:
1. Connect one end of the cable to the control loop's 4 - 20 mA output.
2. Remove the threaded wiring covers on the positioner.
3. Connect the other end of the cable to the SVI II AP. There are two threaded
openings on the positioner. Use the opening with the red plastic insert.
4. Maintain polarity + and - respectively.
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