Instruction Manual
D103412X012
Basic Setup
July 2013
44
When Device Setup is complete you are asked if you wish to run Auto Calibration now. Select yes to automatically
calibrate instrument travel at this time. Follow the prompts on the Field Communicator display. The calibration
procedure uses the valve and actuator stops as the 0% and 100% calibration points. For additional information, refer to
Auto Calibration in the Calibration section.
Note
Single‐acting relay B and C are not user‐adjustable. However, it is recommended that you check the relay adjustment for
double‐acting relay A in new installations before proceeding with travel calibration.
Refer to page 215 for relay adjustment instructions.
If after completing setup and calibration the valve cycles or overshoots (unstable), or is unresponsive (sluggish), you
can improve operation by running Performance Tuner or Stabilize/Optimize.
Performance Tuner
Field Communicator TB > Configure/Setup > Basic Setup > Performance Tuner
WARNING
During performance tuning the valve may move, causing process fluid or pressure to be released. To avoid personal injury
and property damage caused by the release of process fluid or pressure, isolate the valve from the process and equalize
pressure on both sides of the valve or bleed off the process fluid.
The Performance Tuner is used to determine digital valve controller tuning. It will move the valve slightly and monitor
the effects of small tuning changes until an optimum control response is achieved. Because the Performance Tuner
can detect internal instabilities before they become apparent in the travel response, it can generally optimize tuning
more effectively than manual tuning. Typically, the Performance Tuner takes 3 to 5 minutes to tune an instrument,
although tuning instruments mounted on larger actuators may take longer.
To Next Page
Loading...
Need help?
General
