Flowserve 3400MD Digital Positioner - Manual (Page 6)

Logix 3400MD Digital Positioner FCD LGENIM3404-08-AQ –5/15
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Figure 1: Logix 3400MD Digital Postioner Schematic (air-to-air open configuration)
Figure 2: System Postioning Algorithm
4 Logix 3400MD Positioner Overview
The Logix 3400MD digital positioner is a two-wire Foundation
Fieldbus compliant digital valve positioner. The positioner is
configurable through the local user interface. The Logix 3400MD
utilizes the FF protocol to allow two-way remote communications with the positioner. The Logix 3400MD positioner can control both
double- and single- acting actuators with linear or rotary mountings.
The positioner is completely powered by the FF signal. Startup voltage
must be from a FF power supply source.