Installation
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SECTION A-A
47B2826-B / DOC
Figure 2-14. Type DVC5030 Digital Valve Controller Assembly for Replacing Neles-Jamesbury Positioners
plate, place the valve position pointer (key 206) on the coupler. Slide the pointer onto the coupler until it rests on the controller housing. Position the pointer so that, during normal operation, it will not contact any of the spacers (key 182) when the actuator shaft rotates. 7. Be sure the coupler slips onto the pin in the tie-bar assembly (key 190). If necessary, loosen the set screw to allow the tie-bar assembly to slide in the actuator shaft slot. Secure the controller to the positioner plate using four hex head cap screws (key 187). 8. Rotate the coupler (key 180) to be sure it does not bind, then tighten the set screw to hold the tie-bar assembly (key 190) in place. Leave the coupler loose on the tie-bar assembly (key 190) until the travel sensor adjustment is complete. 9. Perform the Travel Sensor Adjust procedure in the “Calibration� section, Section 6. 10. Determine the actuator action (clockwise shaft rotation opens the valve or clockwise shaft rotation closes the valve) and select the appropriate indicator scale (key 207). Remove the paper backing from the indicator scale to expose the adhesive. 11. Slip the indicator scale (key 207) under the pointer and fasten it to the emulator (key 177 by pressing the scale in place. 12. Position the pointer as follows: a. If the valve is closed, position the pointer over the CLOSED mark on the indicator scale. May 1998
b. If the valve is open, position the pointer over the OPEN mark on the indicator scale. 13. Be sure the pointer (key 206) does not contact the emulator (key 177) or digital valve controller housing and tighten the screw (key 205) to secure the pointer on the coupler (key 180).
Replacing PMV Model P1200, P1250, and P2000 Positioners Unless otherwise noted, refer to figure 2-15 for key number locations. 1. Isolate the control valve from the process line pressure, release pressure from both sides of the valve body, and drain the process media from both sides of the valve. Shut off all pressure lines to the pneumatic actuator, releasing all pressure from the actuator. Use lock-out procedures to be sure that the above measures stay in effect while working on the equipment. 2. Remove the PMV positioner from the valve and remove the PMV spindle. 3. Machine the end of the spindle so that it matches the dimensions in figure 2-16. 4. Attach the emulator (key 177) to the actuator using three socket head cap screws (key 189). The digital valve controller can mount to the actuator in any one of four possible mounting quadrants. Determine the desired mounting position then proceed with the next step. 5. Attach the positioner plate (key 178) to the emulator using the three spacers (key 182) and flathead cap screws (key 184).
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