Masoneilan Products SVI II ESD - GE Energy
Masoneilan Products SVI II ESD - GE Energy
Masoneilan Products SVI II ESD - GE Energy
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<strong>GE</strong> <strong>Energy</strong><br />
<strong>SVI</strong> <strong>II</strong> <strong>ESD</strong> Quick Start<br />
7.3.2 <strong>SVI</strong> <strong>II</strong> <strong>ESD</strong> 4-20mA OUT Terminals (+) and (-)<br />
These terminals provide a 4 to 20 mA signal related to valve position. The 4 to 20 OUT terminals<br />
behave much like the terminals of a transmitter so a Transmitter type barrier with 250 Ohm series<br />
resistance (internal or external) is used for this connection (Example: MTL 788 or 788R).<br />
Use of the 4-20 OUT feature is certified to ATEX intrinsically safe requirements and is approved for use<br />
in Zone 0. Use of the 4-20 mA OUT feature has not been certified by FM or CSA. The 4-20 mA OUT<br />
feature may not be used in an intrinsically safe installation when FM or CSA intrinsically safe approval<br />
is required. The 4-20 mA OUT feature is certified by FM and CSA for use in a DIV 2 area and in a DIV<br />
1 area when the <strong>SVI</strong> <strong>II</strong>-<strong>ESD</strong>2 is installed in accordance with flameproof requirements.<br />
Table 2, 4-20mA OUT Entity Parameters<br />
Vmax Imax Ci Li Pmax<br />
Entity Parameters 30 VDC 125 mA 8 nF 1 uH 900 mW<br />
7.3.3 <strong>SVI</strong> <strong>II</strong> <strong>ESD</strong> PV 1-5VDC Terminals (+) and (-)<br />
The Process Transmitter and the <strong>SVI</strong> <strong>II</strong>-<strong>ESD</strong> PV Input are both barrier protected. The transmitter 4 to 20<br />
mA signal is converted to 1 to 5 volts at the Transmitter barrier. The 1 to 5 volt signal is monitored by<br />
the DCS and used by the <strong>SVI</strong> <strong>II</strong>-<strong>ESD</strong> for the embedded process controller. The sense resistor may be in<br />
the barrier or in the Digital Control System.<br />
The Process Transmitter must be approved for use with the Process Transmitter Barrier. An example of a<br />
suitable Process Transmitter barrier is MTL 788 or 788R. An example of the PV 1-5VDC Terminal<br />
barrier is MTL 728.<br />
Table 3, PV 1-5VDC Entity Parameters<br />
Vmax Imax Ci Li Pmax<br />
Entity Parameters 30 VDC 125 mA 1 nF 0 uH 900 mW<br />
7.3.4 <strong>SVI</strong> <strong>II</strong>-<strong>ESD</strong> SW Terminals (+) and (-)<br />
There are two independent isolated solid state switch contact outputs on the <strong>SVI</strong> <strong>II</strong>-<strong>ESD</strong>. They are<br />
labeled SW#1 and SW#2. The switches are polarity sensitive – that is, conventional current flows INTO<br />
the plus terminal. Examples of suitable barriers are MTL 707, MTL 787 and MTL 787S.<br />
Table 4, SW 1 & SW 2 Entity Parameters<br />
Vmax Imax Ci Li Pmax<br />
Entity Parameters 30 VDC 125 mA 4 nF 10 uH 900 mW<br />
Doc Number<br />
ES-727<br />
Written By P.Levesque 13DEC2006<br />
Revision M ADR-003666 04/19/12<br />
Checked T.Kabir 10JAN2007<br />
Filename ES-727.DOC Page 9 of 11 Approved T. Kabir 10JAN2007<br />
Copyright 2006 as an unpublished trade secret. This document and all information herein is the property of Dresser Flow Control,<br />
Dresser, Inc. It is confidential and must not be made public or copied and is subject to return upon demand.<br />
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