Emerson ControlWave GFC IStran Instruction Manual

Instruction Manual

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Document: CI-CW-GFC-ISTRAN
Part: D301647X012
November, 2009

ControlWave GFC IStran

ControlWave GFC IStran

Intrinsically Safe Communication Interface

Remote Automa ti on Solution

www.EmersonProcess.com/Remote

Be sure that these instructions are carefully read and understood before any operation is
attempted. Improper use of this device in some applications may result in damage or injury. The
user is urged to keep this book filed in a convenient location for future reference.

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.

IMPORTANT! READ INSTRUCTIONS BEFORE STARTING!

EQUIPMENT APPLICATION WARNING

The customer should note that a failure of this instrument or system, for whatever reason, may
leave an operating process without protection. Depending upon the application, this could result in
possible damage to property or injury to persons. It is suggested that the purchaser review the
need for additional backup equipment or provide alternate means of protection such as alarm
devices, output limiting, fail-safe valves, relief valves, emergency shutoffs, emergency switches,
etc. If additional information is required, the purchaser is advised to contact RAS.

RETURNED EQUIPMENT WARNING

When returning any equipment to RAS for repairs or evaluation, please note the following: The
party sending such materials is responsible to ensure that the materials returned to RAS are clean
to safe levels, as such levels are defined and/or determined by applicable federal, state and/or
local law regulations or codes. Such party agrees to indemnify RAS and save RAS harmless from
any liability or damage which RAS may incur or suffer due to such party's failure to so act.

ELECTRICAL GROUNDING

Metal enclosures and exposed metal parts of electrical instruments must be gr ounded in
accordance with OSHA rules and regulations pertaining to "Design Safety Standards for Electrical
Systems," 29 CFR, Part 1910, Subpart S, dated: April 16, 1981 (OSHA rulings are in agreement
with the National Electrical Code).

The grounding requirement is also applicable to mechanical or pneumatic instruments that
include electrically operated devices such as lights, switches, relays, alarms, or chart drives.

EQUIPMENT DAMAGE FROM ELECTROSTATIC DISCHARGE VOLTAGE

This product contains sensitive electronic components that can be damaged by exposure to an
electrostatic discharge (ESD) voltage. Depending on the magnitude and duration of the ESD, this
can result in erratic operation or complete failure of the equipment. Read supplemental document
S14006 for proper care and handling of ESD-sensitive components.

Remote Automation Solutions

A Division of Emerson Process Management
1100 Buckingham Street, Watertown, CT 06795
Telephone [phone]

Emerson Process Management

Training

GET THE MOST FROM YOUR EMERSON

INSTRUMENT OR SYSTEM

 Avoid Delays and problems in getting your system on-line

 Minimize installation, start-up and maintenance costs.

 Make the most effective use of our hardware and software.

 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.

For information or to enroll in any class, go to http://www.EmersonProcess.com/Remote
click on “Training” or contact our training department in Watertown at [phone].

and

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ControlWave GFC-IStran Instruction Manual

Contents

Chapter 1 – Introduction 1-1

1.1 Physical Description..................................................................................................................1-2

1.1.1 IStran PCB ....................................................................................................................1-3

Chapter 2 – Function and Electrical Characteristics 2-1

2.1 Hazardous and Non-Hazardous Characteristics.......................................................................2-1

2.1.1 Hazardous Interface......................................................................................................2-1

2.1.2 Non-Hazardous Interface..............................................................................................2-3

2.2 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

2.3 Non-Hazardous Power Output..................................................................................................2-6

Chapter 3 – System Wiring 3-1

3.1 Introduction to System Wiring...................................................................................................3-1

3.2 Grounding..................................................................................................................................3-1

3.3 Cable Length.............................................................................................................................3-2

3.4 Field Wiring Diagrams...............................................................................................................3-2

Chapter 4 – Installation 4-1

4.1 Installation Overview.................................................................................................................4-1

4.2 Installation Notes.......................................................................................................................4-1

Chapter 5 – Specifications 5-1

5.1 Environment..............................................................................................................................5-1

5.2 Operating Specifications...........................................................................................................5-1

Index I-1

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ControlWave GFC-IStran Instruction Manual

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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
external power through the IStran.

The IStran performs the following functions:

 Replaces six intrinsic safety barriers for RS-232 signals (3 in, 3 out)
 Provides 500V isolation between two devices
 Operates at speeds up to 19,200bps
 Allows the CW-GFC-IS to receive power from outside the Division

1 area

 Allows the CW-GFC-IS to control power to a radio or modem

located outside the Division 1 area

You can also use the IStran for certain applications where intrinsic
safety is unnecessary, such as to provide isolation between two devices
or to allow multiple devices to share a single radio or modem.

Figure 1-1. IStran Front View

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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:

 One IStran printed circuit board (PCB) for the IStran assembly
 Yellow alodined aluminum base plate (0.060 inch thick)
 Black anodized cover (0.090 inch thick)

1-2 Introduction Issued Nov-09

Figure 1-2. Physical Dimensions – IStran – Front View

Figure 1-3. Physical Dimensions – IStran – Edge (Side) View

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

Switched Mode

Unswitched Mode

The IStran PCB provides two interfaces designated hazardous and non­hazardous. You configure each interface independently to operate in
either switched or unswitched mode.

Switched mode sets the TX drivers into a high-impedance state to
reduce power consumption.

In unswitched mode, the TX drivers are always active and they always
follow the corresponding RX inputs. In cases where power consumption
is not a key factor, configure the IStran for unswitched mode.

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ControlWave GFC IS Communication Interface Manual (CI-CW-GFC-ISTRAN)

1-4 Introduction Issued Nov-09