ELECTRONIC VALVE POSITIONERS PANEL MOUNTED - SERIES PP500

Position Indicator :-

To indicate Percentage opening of the final control element

* Range - 0 - 100.0%
* Indicator - 3 ½ Digit 12.7 mm height Red LED
* Resolution - 0.1%
* Accuracy - 0.2% ± 1 Digit. F.S.R.
* Adjustment - Span / Zero adjustable in the range of 10% (Aprox.)

Control Features :-
* Auto / Manual selection facility.
* Open / Off / Close operating switch when selector switch is in Manual
  mode. A Potentiometer can be provided for Open / Close operation , as
  an option, instead of switch.
* Time Delay (TD) adjustment in the range of 0.2 to 20 Second to adjust
  the time gap between command signal & it's acknowledgement ,
  to avoid hunting. Clockwise rotation will increase the Time Delay.
* Dead Band (DB) setting in the range of 1 to 10%. Clockwise rotation
  will increase the Dead Band.

Fault Indications :
* Fault LED ( I / P) : Fault LED Input glows when the control signal is
  absent or less than desired value e.g. 4 mA.

* Fault LED ( F / B) : Fault LED Feedback glows when the feed back
  signal from the actuator is absent or incorrect.

Control / Calibration Adjustments :-
* IND - Zero / Span adjustments for digital indicator , so to match
 percentage opening of the valve & other Parameters. Location on front
  side (Top)
* Control - Zero / Span adjustment for control signal , so as to match
  them with mechanical position of the valve / feedback signal from the
  actuator. Location on front side . ( Bottom)
* F.B. - Zero /Span adjustments for feedback signal , so as to match
  them with mechanical position of the valve / Control Signal from
  controller. Location on rear side ( Right Top)
* R.X. - Zero / span adjustments for Retransmission output , so as to
  match them with other parameters. Location on rear side
  (Left Bottom)