Emerson ControlWave GFC IStran Instruction Manual

Intrinsically safe communication interface

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Instruction Manual
Document: CI-CW-GFC-ISTRAN
Part: D301647X012
November, 2009
ControlWave GFC IStran
Intrinsically Safe Communication Interface
Remote Automation Solutions
www.EmersonProcess.com/Remote
ControlWave GFC IStran

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Summary of Contents for Emerson ControlWave GFC IStran

  • Page 1 Instruction Manual Document: CI-CW-GFC-ISTRAN Part: D301647X012 ControlWave GFC IStran November, 2009 ControlWave GFC IStran Intrinsically Safe Communication Interface Remote Automation Solutions www.EmersonProcess.com/Remote...
  • Page 2 These instructions may not cover all details or variations in equipment or cover every possible situation to be met in connection with installation, operation or maintenance. Should problems arise that are not covered sufficiently in the text, the purchaser is advised to contact Emerson Process Management, Remote Automation Solutions division (RAS) for further information.
  • Page 3  Know your system. As you know, a well-trained staff is essential to your operation. Emerson offers a full schedule of classes conducted by full-time, professional instructors. Classes are offered throughout the year at various locations. By participating in our training, your personnel can learn how to install, calibrate, configure, program and maintain your Emerson products and realize the full potential of your system.
  • Page 4 BLANK PAGE...
  • Page 5: Table Of Contents

    ControlWave GFC-IStran Instruction Manual Contents Chapter 1 – Introduction Physical Description........................1-2 1.1.1 IStran PCB ........................1-3 Chapter 2 – Function and Electrical Characteristics Hazardous and Non-Hazardous Characteristics...............2-1 2.1.1 Hazardous Interface......................2-1 2.1.2 Non-Hazardous Interface ....................2-3 Switched & Unswitched Modes....................2-5 2.2.1 Configuring the Hazardous Interface for Switched Mode ..........2-6 2.2.2 Configuring the Hazardous Interface for Unswitched Mode .........2-6 2.2.3 Configuring the Non-Hazardous Interface for Switched Mode ........2-6 2.2.4 Configuring the Non-Hazardous Interface for Unswitched Mode .........2-6...
  • Page 6 ControlWave GFC-IStran Instruction Manual Contents Issued Nov-09...
  • Page 7: Chapter 1 - Introduction

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Chapter 1 – Introduction The ControlWave GFC Intrinsically Safe IStran Communication Interface (IStran) allows an intrinsically safe ControlWave Gas Flow Computer / Corrector (CW-GFC-IS) to communicate with a device located in a Division 2 or non-hazardous area. Underwriter’s Laboratories (UL) approves the IStran interface with a CW-GFC-IS unit when you use it with approved intrinsically safe battery power/solar panel power, or when the CW-GFC-IS receives...
  • Page 8: Physical Description

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) 1.1 Physical Description The IStran assembly measures 6.25 inches (length) by 4.50 inches (width) by approximately 1 inch (depth). (See Figure 1-2, 1-3, and 1-4.) The IStran assembly consists of the following major components: ...
  • Page 9: Istran Pcb

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Figure 1-4. IStran PCB Mounted on Base Plate (Cover removed) 1.1.1 IStran PCB The IStran PCB provides two interfaces designated hazardous and non- hazardous. You configure each interface independently to operate in either switched or unswitched mode. Switched Mode Switched mode sets the TX drivers into a high-impedance state to reduce power consumption.
  • Page 10 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Introduction Issued Nov-09...
  • Page 11: Chapter 2 - Function And Electrical Characteristics

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Chapter 2 – Function and Electrical Characteristics You can use the ControlWave GFC Intrinsically Safe IStran Communication Interface (IStran) in both hazardous and non- hazardous environments. 2.1 Hazardous and Non-Hazardous Characteristics Table 2-1 provides the characteristics common to both the hazardous and non-hazardous IStran interfaces: Table 2-1.
  • Page 12 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Position Name Function HPOUT and signals) HJ1-7 HPOUT Hazardous Power HJ1-6 HRX3 Signal Input HJ1-5 HRX2 Signal Input HJ1-4 HRX1 Signal Input HJ1-3 HTX3 Signal Output (Follows NRX3) HJ1-2 HTX2 Signal Output (Follows NRX2) HJ1-1 HTX1 Signal Output (Follows NRX1)
  • Page 13: Non-Hazardous Interface

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Figure 2-1. Setting Jumper HJP1 2.1.2 Non-Hazardous Interface Typically you connect the non-hazardous interface to a radio or modem located with the IStran assembly in a non-hazardous or Division 2 rated area. Table 2-4 identifies each connector position and the corresponding signal name, and provides a brief description of each I/O point on the non-hazardous interface.
  • Page 14 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Table 2-5 provides the characteristics of the non-hazardous interface. Table 2-5. Non-Hazardous Interface Characteristics Description Specification NPIN Voltage (When Minimum: 5.4 VDC HPOUT is not used) Maximum: 16 VDC NPIN Voltage (When Minimum: 8 VDC HPOUT is used) Maximum:...
  • Page 15: Switched & Unswitched Modes

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Figure 2-2. Setting Jumper NJP1 2.2 Switched & Unswitched Modes You can configure each IStran interface independently to operate in switched or unswitched mode. In switched mode, the TX drivers can enter a high-impedance state to reduce power consumption. The outputs transition smoothly to and from the high-impedance state.
  • Page 16: Configuring The Hazardous Interface For Switched Mode

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) 2.2.1 Configuring the Hazardous Interface for Switched Mode To configure the hazardous interface for switched mode, place the supplied shorting jumper in the HJP1 position marked SW (short HJP1 pins 1 and 2 as shown in Figure 2-1). If you don’t install a jumper at HJP1 the hazardous interface defaults to switched mode.
  • Page 17 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) When hazardous interface signal input HRX3 is at a high (positive) level, NPOUT turns on and can supply power to an external device. When HRX3 is at a low (or negative) level, NPOUT turns off. You determine the voltage drop between NPIN and NPOUT by multiplying the NPOUT load current by the NPIN to NPOUT on-resistance.
  • Page 18 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Function and Electrical Characteristics Issued Nov-09...
  • Page 19: Chapter 3 - System Wiring

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Chapter 3 – System Wiring This chapter includes details on grounding and wiring for the IStran. 3.1 Introduction to System Wiring The IStran connects a radio, modem, or other communications device to a ControlWave GFC-IS Flow Computer/Corrector. An IStran can also provide an intrinsically safe interface between an external power supply and RS-232 signals associated with a radio, modem or ControlWave RTU (in a non-hazardous area) and a ControlWave GFC-IS in a Class I,...
  • Page 20: Cable Length

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) 3.3 Cable Length Underwriter’s Laboratories (UL) lists the IStran for use with cable lengths up to 25 feet on either or both interfaces. Typically, you install the IStran in close proximity to the communications device (connected to the non-hazardous interface) and at some distance from the CW- GFC-IS (connected to the hazardous interface).
  • Page 21: Cw-Gfc-Is With External Power Source

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Figure 3-2 is similar to Figure 3-1 except it uses an MDS radio instead of a modem. Figure 3-2. Radio System with Single Power Source Figures 3-3 and 3-4 illustrate an externally powered CW-GFC-IS (without a modem or radio).
  • Page 22: Cw-Gfc-Is With External Power Supply

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Figure 3-4. CW-GFC-IS with External Power Supply System Wiring Issued Nov-09...
  • Page 23: Chapter 4 - Installation

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Chapter 4 – Installation 4.1 Installation Overview The IStran and the communications device reside in a non-hazardous or Division 2 rated area, while the CW-GFC-IS resides in a Division 1, Division 2, or non-hazardous area. You must provide a suitable enclosure for the IStran.
  • Page 24 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) IStran. Do not install any other wiring through the same hole or allow other wires to share a cable or conduit with the intrinsically safe wiring. Secure the intrinsically safe wiring and limit slack to ensure that, should one of the intrinsically safe wires become dislodged from an IStran terminal, it must still maintain a 2”...
  • Page 25: Chapter 5 - Specifications

    ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Chapter 5 – Specifications 5.1 Environment The IStran design supports operation inside a building or a weather- proof enclosure only. 5.2 Operating Specifications Table 5-1 provides the operating specifications for the IStran: Table 5-1. IStran Operating Specifications Description Specification Operating...
  • Page 26 ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN) Specifications Issued Nov-09...
  • Page 27 WARRANTY Remote Automation Solutions (RAS) warrants that goods described herein and manufactured by RAS are free from defects in material and workmanship for one year from the date of shipment unless otherwise agreed to by RAS in writing. RAS warrants that goods repaired by it pursuant to the warranty are free from defects in material and workmanship for a period to the end of the original warranty or ninety (90) days from the date of delivery of repaired goods, whichever is longer.
  • Page 28 RA number. C. Mail Mail the form (GBU 13.01) to Remote Automation Solutions A Division of Emerson Process Management Repair Dept. 1100 Buckingham Street Watertown, CT 06795 A RAS Repair Dept. representative will return call (or other requested method) with a RA number.
  • Page 29 Remote Automation Solutions Repair Authorization Form Providing this information will permit Remote Automation Solutions to effectively and efficiently process your return. Completion is required to receive optimal lead time. Lack of information may result in increased lead times.) Date ____________ RA # _________________ Line No.
  • Page 30 BLANK PAGE...
  • Page 31 ControlWave GFC-IStran Instruction Manual Index Non-Hazardous power output......2-6 Field wiring diagrams.......... 3-2 Figures Specifications............5-1 1-1. Istran Front View ........1-1 Switched Mode ..........1-3, 2-5 1-2. Physical Dimensions - Istran Front View 1-2 configuring the Hazardous interface for ..2-6 1-3.
  • Page 32 Col. San Pedro de los Pinos PlantWeb and the PlantWeb logo are marks of Emerson Electric Co. The 01180 Mexico, D.F. Emerson logo is a trademark and service mark of the Emerson Electric Co. Mexico All other trademarks are property of their respective owners.

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