Flowserve 3400IQ Digital Positioner - Manual (Page 97)

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Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07
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9
Calibration
9.1 Introduction
About This Section
This section provides information about calibrating the Logix 3400IQ digital positioner’s sensors.
9.2 Overview
About Calibration
When re-calibration is required, the Logix 3400IQ digital positioner does not need to be removed
from the process and may be calibrated in the field.
NOTE: Calibration will cause the valve to fully stroke, so calibration must not be initiated while the
valve is on line in the process.
CAUTION: The configurator application can be used to perform the calibration
procedures. The software application is not a calibrated measurement source. It is a digital
diagnostic tool that provides verification of device parameter values.
Calibration Process
In general, calibration procedures follow these processes:
1. Prepare the device. (Note: The transducer function block must be out-of-service in order to
perform any calibration.)
2. Write to CALIBRATE.
3. Observe the positioner performance.
The calibration parameter values and calibration commands are written to the device using a fieldbus
configuration application, (such as the NI-FBUS Configurator).
Alternatively, use the Re-Cal button on the Logix 3400IQ digital positioner to perform the stroke
calibration. Confirm that positioner is configured properly, then proceed.
1. Prepare the device and safe the area for the removal of the main housing cover.
2. Remove the cover.