EMERSON Mounting Instructions DVC6200 or DVC2000 Digital Valve Controller on 657 and 667 Size 80 Actuators (4 Inch Travel) Fisher

DVC6200 or DVC2000 Digital Mounting Instructions Valve Controller on 657 and 667

Size 80 Actuators (4 inch travel)

May 2010

Use these instructions to mount a Fisher FIELDVUE

WARNING

DVC6200 or DVC2000 digital valve controller on Fisher 657 and 667, Size 80 actuators with 4 inch travel.

To avoid personal injury due to the sudden, uncontrolled movement of parts, do not loosen the stem connector

WARNING

cap screws when the stem connector has spring force applied to it.

Avoid personal injury or property

2. During the attachment of the connector arm (key 6)

damage from sudden release of process

to the valve stem connector it will be necessary to

pressure or bursting of parts. Before

loosen the stem connector cap screws. Consult the

performing any maintenance operations:

appropriate actuator instruction manual for proper Always wear protective clothing, actuator disassembly and reassembly. Install the gloves, and eyewear. connector arm (key 6) when reassembling the valve stem actuator.

Do not remove the actuator from

3. Attach the mounting bracket assembly (key 1) to the

the valve while the valve is still

yoke using the two socket head screws (key 2).

pressurized.

4. Push the cap screws and the O-ring in mounting

Disconnect any operating lines

bracket groove and then attach the black plastic

providing air pressure, electric power, or

alignment template to the mounting bracket by inserting

a control signal to the actuator. Be sure

the two protruding posts into the mounting holes in the

the actuator cannot suddenly open or

bracket

close the control valve.

5. Attach the extension arm (key 4) to the connector

Use bypass valves or completely

arm using two pan head machine screws (key 5) but do

shut off the process to isolate the

not tighten. Extension arm orientation and slot selection

control valve from process pressure.

depend on actuator size and must be determined by

Relieve process pressure from both

the user based on position of the alignment template.

sides of the control valve.

6. Attach the magnet assembly (key 3) to the

Vent the pneumatic actuator extension arm (the magnet assembly can be inverted loading pressure and relieve any 180 without effect) with two pan head machine screws actuator spring precompression. (key 5) and simultaneously position the magnet

assembly so that it can slide into the channel in the

Use lock-out procedures to be sure

alignment template. The magnet assembly should be

that the above measures stay in effect

fully in the alignment template channel so that the

while you work on the equipment.

extension arm is contacting the back of the alignment

Check with your process or safety template but not bending it. Tighten pan head machine engineer for any additional measures screws (key 5) attaching the extension arm to the that must be taken to protect against connector arm but do not yet tighten the pan head process media. machine screws attaching the magnet assembly.

7. For an air-to-extend actuator, slide the magnet

Refer to figure 2 for mounting parts identification. Refer

assembly(key 3) so that the bottom marking of the

to the DVC6200 or the DVC2000 digital valve controller

assembly aligns with the sensor index mark on the

instruction manual for digital controller parts

alignment template (see figure 1). The magnet

identification. Refer to the appropriate actuator

assembly’s top marking is used for air-to-retract. The

instruction manual for actuator installation, operation,

extension arm may require vertical repositioning to get

maintenance, and parts identification.

the magnet array in the correct location. When the magnet assembly is properly positioned, remove the

1. Isolate the control valve from the process line

alignment template and tighten the two pan head

pressure and release pressure from both sides of the

machine screws (key 5).

valve body. Shut off all pressure lines to the actuator, releasing all pressure from the actuator. Use lock-out 8. Attach the digital valve controller to the mounting procedures to be sure that the above measures stay in bracket and tighten the three hex head cap screws effect while you work on the equipment. (key 1b).

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