SVI-II Instruc Man.book - Fagerberg

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HART Communications with Intrinsic Safety 7 Overview When an SVI II AP is installed in a hazardous area in accordance with the applicable codes and standards for Intrinsic Safety there are wiring considerations for successful operation in addition to the requirements for safety. The choice and application of intrinsic safety barriers requires special training. For additional information, consult MTL Instruments PLC Measurement Technology Limited: www.mtl-inst.com or R.Stahl, Inc. www.rstahl.com. All installations must comply with plant standards and local and international electrical codes. There are 3 basic barrier types: 1. Single channel zener diode barriers 2. Dual channel zener diode barriers 3. Active galvanic isolators To determine if the installation will perform successfully with HART communications you must consider HART filter requirements and HART barrier compliance. HART Barrier Compliance The intrinsic safety barrier must be designed to transmit the HART signals in both directions. Both passive zener diode barriers and active galvanic isolators are offered with HART compliance. Consult the manufacturer or refer to the documents listed at the end of this instruction manual. 83
Masoneilan Dresser SVI II AP Instruction Manual Hazardous Area Non-hazardous Area SVI II AP Power Supply Barrier Resistance Single Channel Zener Barrier HART Filter HART Compliant Control System Output Card HART Modem ValVue 2.4 HHC375 Figure 38 Intrinsically Safe Installation with Zener Barrier and HART Filter 84
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Warranty Items sold by Dresser, ®
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Masoneilan Dresser SVI II AP-1 Inst
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Mounting the SVI II AP on Rotary Va
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Pushbuttons and Local Display for C
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Pneumatic Cover Installation . . .
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Figure 42 Double Acting Pneumatic R
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Introduction 1 The SVI ® II AP (Sm
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Introduction Operational Overview A
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Installation and Set Up 2 Overview
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Installation and Set Up Pre-Install
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Installation and Set Up Connecting
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Check Out and Power Up 3 Overview T
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Check Out and Power Up Physical Ins
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Page 54 and 55: Using the Digital Interfaces Pushbu
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Page 82 and 83: Wiring an SVI II AP Wiring Guidelin
Page 88 and 89: Wiring an SVI II AP HART Physical L
Page 90 and 91: Wiring an SVI II AP Split Range App
Page 100 and 101: HART Communications with Intrinsic
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Page 104 and 105: Operation and Maintenance Physical
Page 110 and 111: Operation and Maintenance SVI II AP
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Page 126 and 127: Advanced Usage E Technology to Maxi
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