DataFlo-P Smart Positioner

An Electronic Positioner With A Built-In 
Microcontroller For Precise Process Control

 
The DataFlo-P Positioner, controlled by a 4-20 mA analog signal from a PLC or digitally from a computer, gives you calibration, monitoring and diagnostics both on-site or from a control room computer. This dramatically increases system dependability and lowers valve calibration, monitoring and maintenance costs. DataFlo-P controls your process better and turns your final control element into an efficient digital communications platform. DataFlo-Ps cutting edge technology offers you many benefits: 

 
  • Digital communication
  • Diagnostics
  • Selectable input signals
  • On board set-up
  • On board LCD
  • Remote set-up
  • Fail position on loss of signal
  • Opening & closing speed control
  • AC or DC power
  • Power-on delay
  • Power-on position
  • Select position on power
  • DOS compatible setup software
  • Adjustable dead band
  • (4) 21 point user selectable/programmable curves
  • Adjustable split range
  • Hart communications
  • Hand held communicator 

 

Features and Options
  • Controlled by Motorola microcontroller
  • Pushbutton setpoint signal calibration
  • Selectable fail position upon loss of control signal plus time to respond upon restoration of signal
  • Selectable fail position upon loss of and subsequent restoration of power plus time lag.
  • Speed control 0-200 seconds
  • Separate speed control for open and close
  • Security code
  • Unit address selection
  • Pushbutton or remote programming of direct or reverse acting
  • Split range
  • Adjustable dead band or auto-adjust
  • Electronic travel stops
  • Programmable response curves; standard linear and 1:25 or 1:50 equal percentage or up to 4 user defined 21 point curves
  • Tight valve shutoff with yA set to other than 0% open
  • Full open valve with yE set to other than 100% open
  • Pushbutton restoration of factory defaults
  • Selectable baud rate 1200 bps to 38K bps. 

I/0 Options:

  • 7 analog inputs available:
    4-20 mA, 1-5 mA, 10-50 mA, 135 ohm potentiometer, 1000 ohm potentiometer, 0-5 VDC, 0-10 VDC.
  • 1 digital RS485 input
  • 1 alarm output (open collector 50 volt max; 100 mA max.) 

 

Diagnostics:

  • High Alarm
  • Low Alarm
  • Position Deviation Alarm
  • Cycle Count (accumulated cycle times)

 

© Pneumatic Control, Inc. 1999/2000