P2000 IOM EN - PMV Positioners

1. CalibrationPLEASE NOTICE: For easyacsess to important partsplease back off the fourscrews. Remove the cover.Fig 1The side frame can be removedby simply pressing outone end of the frame from theslot in the main frame.Fig 2NOTE: P-2000 series positionerare factory calibrated to4-20 mA input signal. Startby adjusting zero first, thenstroke the unit and checkreading before furtheradjustments.1.1 Cam settingAfter mounting the PMVPositioner on your actuatorand before switching on thesupply air, if possible,manually operate theactuator from fully open tofully closed position andcheck that the cam iscorrectly oriented. Makeadjustments if neccessary(see instructions below).Figure 1Figure 2Position the cam as shown.The ball bearing should notride on the inactive portion ofthe cam. Tighten the nut.Fig 4NOTE: The cam will turnslightly with the nut as it istightened. Be sure to allow forthis slight clockwise rotation.1.2 To change the actionTo change the action, the cammust be flipped over and thetubes to the connections C1and C2 must change places.Fig 51.3 Gain adjustmentPLEASE NOTE: Beforeadjusting the gain pleaseswitch of the supply pressure.The gain surpression springcan be moved along the beamand the balance arm. The feedbackstiffness can thus beadjusted so that the PMV Positionerdynanics matches theactuator size.Fig 6&7You will find a number ofpositioning holes in the beamand the balance arm for thespring. The smaller theactuator the lower is the acceptablelevel of the gain.Figure 4Figure 5Should manual operation ofthe actuator not be possiblewe recommend you to backoff the nut holding the cam.Fig 3High gainAdjust the position of the camso that the ball bearing on thelower arm rests on the lowestpart on the correct curve ofthe cam. You have three differentcurves to choose from onthe standard cam (0-100, 0-50or 50-100 % of the control signalfor the full stroke of theactuator).Figure 3Low gainFigure 6Figure 7– 7 –P-2000,2020,2050 and Ex-manual from PMV 13794-99.6