Intrinsically Safe Barriers; Startup; Logix 3200Md Local Interface; Initial Dip Switch Settings Operation - Flowserve Logix 3200MD Installation, Operation And Maintenance Manual

distortion of the HART communication signal, cable capacitance
and cable length restrictions must be calculated. The cable length
must be limited if the capacitance is too high. Selecting a cable
with lower capacitance/foot rating will allow longer cable runs.
In addition to the cable capacitance, the network resistance also
affects the allowable cable length.
In order to calculate the maximum network capacitance, use the
following formula:
To control cable resistance, 24 AWG cable should be used for runs
less than 5000 feet. For cable runs longer than 5000 feet, 20 AWG
cable should be used.
6.5

Intrinsically Safe Barriers

When selecting an intrinsically safe barrier, make sure the barrier is
HART compatible. Although the barrier will pass the loop current and
allow normal positioner control, if not compatible, it may prevent
HART communication.
14
User instructions - Digital Positioner 3200MD LGENIM0059-01 10/08
®
Equation 2
7

Startup

7.1

Logix 3200MD Local Interface

Operation
The Logix 3200MD local user interface allows the user to configure
the basic operation of the positioner, tune the response, and calibrate
the positioner without additional tools or configurators. The Local
interface consists of a quick calibration button for automatic zero
and span setting, along with two jog buttons for spanning valve/ac-
tuators with no fixed internal stop in the open position. There is
also a switch block containing 8 switches. Six of the switches are
for basic configuration settings and one is for calibration options.
There is also a gain selector switch for adjusting the positioner gain
settings. For indication of the operational status or alarm conditions
there are also 3 LEDs on the local user interface.
Figure 8: Local User Interface
7.2 Initial DIP Switch Settings
Before placing the unit in service, set the dip-switches in the Config-
uration and Cal boxes to the desired control options. For a detailed
description of each dip-switch setting, see sections 1&2.
NOTE: The switch settings in the Configuration box are activated
only by pressing the "Quick Cal" button, except Auto-tune adjust-
ments that can be made at any time.