Pv 1-5Vdc (+) And (-) Terminals; Sw (+) And (-) Terminals; Remote (1) And (2) And (3) Terminals; Digital In Terminals - GE Masoneilan SVI FF Quick Starter Manual

8.4

PV 1-5VDC (+) and (-) Terminals

The Process Transmitter and the SVI FF positioner's PV Input are both barrier
protected. The transmitter 4 to 20 mA signal is converted to 1 to 5 Volts at the
Transmitter barrier. The 1 to 5 volt signal is monitored by the DCS and used by
the SVI FF positioner for the embedded process controller. The sense resistor
may be in the barrier or in the Digital Control System.
The Process Transmitter must be approved for use with the Process Transmitter
Barrier. An example of a suitable barrier is MTL 788 or 788R An example of the PV
INPUT barrier is MTL 728.
Entity Parameters of the PV terminals:
Vmax = 30 Vdc; Imax = 125 mA; Ci = 1 nF; Li = 0 uH; Pmax = 900 mW
8.5

SW (+) and (-) Terminals

There is one solid state switch contact output on the SVI FF positioner. It is
labeled SW. The switch is polarity sensitive – that is, conventional current flows
INTO the plus terminal.
Entity parameters are:
Vmax = 30 Vdc Imax = 125 mA
Pmax = 500 mW
8.6

REMOTE (1) and (2) and (3) Terminals

The REMOTE terminals deliver reference Voltage to an optional remote position
sensing potentiometer. Current, Voltage, and Power are limited by the SVI FF
positioner.
The REMOTE terminals entity parameters are the parameters of the 4 to 20 mA
INPUT barrier.
The SVI-II REMOTE MOUNT is approved for use as a remote position sensing
device with the SVI FF positioner.
Entity parameters of the Remote Terminals are:
Uo/Voc = 6.5 Volts Io/Isc = 9.6 mA Ca = 22 uF La = 300 mH
Connect only to suitable potentiometer.
8.7

Digital In Terminals

The Digital In terminal is suitable for direct connection to a passive switch.
Entity Parameters are:
Uo/Voc = 5.35 Volts Io/Isc = 50.6 mA Ca = 1.25 uF La = 2 mH
Connect only to passive dry contact simple apparatus.
Copyright 2016. This document and all information herein is the property of Dresser Inc.
28 | =GE Oil & Gas
Ci = 4 nF Li = 10 uH
© 2017 General Electric Company. All rights reserved
GE Oil & Gas
ES-776 Rev L
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