Flowserve 3400IQ Digital Positioner - Manual (Page 39)

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Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07
flowserve.com
7
Operation
7.1 Introduction
About This Section
This section outlines the tasks for operating and monitoring the Logix 3400IQ digital positioner
on a fieldbus network. Refer to the Logix 3400IQ Digital Positioner Start-up Guide, for additional
information.
7.2 Operation Tasks
Fieldbus Device Operations
Positioning – For the most basic operation of the Logix 3400IQ digital positioner the user must write
the desired final position value to OUT in the AO block. The AO block MODE_BLK would be set to
Manual. The AO block SHED_OPT must be set to anything but uninitialized and the CHANNEL is set
to1. The Transducer block MODE_BLK is set to Auto. The Resource block MODE_BLK is set to Auto.
Note: A valid schedule must have been downloaded into the device for control from the AO block.
Calibration – Set the AO block and Resource block to OOS. Next set the Transducer block MODE_
BLK to Out-of-Service (OOS). Write the desired calibration to CALIBRATE to perform the calibration
routine. If performing the actuator pressure transducer calibration, the user will need to first write the
supply pressure value into PRESS_CAL in psig.