Rosemount 4600 User manual

www.rosemount.com
Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
Oil & Gas Panel Transmitter

Reference Manual
00809-0100-4022, Rev AA
July 2002 Model 4600
www.rosemount.com
Model 4600
Oil & Gas Panel Transmitter
NOTICE
Read this manual before working with the product. For personal and system safety, and for
optimum product performance, make sure you thoroughly understand the contents before
installing, using, or maintaining this product.
Rosemount Inc. has two toll-free assistance numbers:
Customer Central
Technical support, quoting, and order-related questions.
United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)
Asia Pacific- 65 777 8211
Europe/ Middle East/ Africa - 49 (8153) 9390
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Rosemount representative.
The products described in this document are NOT designed for nuclear-qualified
applications. Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact your local Rosemount
Sales Representative.

Reference Manual
00809-0100-4022, Rev AA
July 2002 Model 4600
www.rosemount.com
Table of Contents
SECTION 1
Introduction
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SECTION 2
Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Zero and Span Target Orientation. . . . . . . . . . . . . . . . . . . . . . . 2-4
Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Panel Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Impulse Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Connect Wiring and Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Signal Wiring Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Power Supply 4–20 mA Transmitters . . . . . . . . . . . . . . . . . . . . 2-6
Surges/Transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Optional Transient Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Zero the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Re-zeroing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Using the transmitter zero adjustment target . . . . . . . . . . . . . . 2-8
Hazardous Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Grounding the Transmitter Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
SECTION 3
Configuration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Commissioning on the Bench with HART . . . . . . . . . . . . . . . . . . . . . . 3-2
Setting the Loop to Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Bench Hook-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Model 275 HART Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Review Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Check Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Process Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
TOC-2
Sensor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Set Process Variable Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Rerange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Rerange with a HART Communicator Only. . . . . . . . . . . . . . . . 3-8
Rerange with a Pressure Input Source
and HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Rerange with a Pressure Input Source and the
Local Zero and Span Targets (option D1) . . . . . . . . . . . . . . . . . 3-8
Rerange with AMS only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rerange with a Pressure Input Source and AMS . . . . . . . . . . . 3-9
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Failure Mode Alarm and Saturation . . . . . . . . . . . . . . . . . . . . . . . 3-10
Alarm and Saturation Level Configuration . . . . . . . . . . . . . . . . . . 3-11
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Alarm and Saturation Levels for Burst Mode . . . . . . . . . . . . . . . . 3-11
Alarm and Saturation Values for Multidrop Mode. . . . . . . . . . . . . 3-12
Alarm Level Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Process Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Scaled Variable Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Re-mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Sensor Temperature Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Transmitter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Loop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Advanced Functions for HART Protocol . . . . . . . . . . . . . . . . . . . . . . 3-18
Saving, Recalling, and Cloning Configuration Data . . . . . . . . . . . 3-18
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
AMS creating a Reusable Copy . . . . . . . . . . . . . . . . . . . . . . . 3-19
AMS Applying a User Configuration . . . . . . . . . . . . . . . . . . . . 3-20
Burst Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Multidrop Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Reference Manual
00809-0100-4022, Rev AA
July 2002
TOC-3
Model 4600
Changing a Transmitter Address . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Communicating with a Multidropped Transmitter . . . . . . . . . . . . . 3-22
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Polling a Multidropped Transmitter. . . . . . . . . . . . . . . . . . . . . . . . 3-22
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
SECTION 4
Operation and
Maintenance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration for HART Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Configure the output parameters. . . . . . . . . . . . . . . . . . . . . . . . 4-2
Determining Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Choosing a Trim Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Zero Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Full Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Recall Factory Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Recall Factory Trim—Sensor Trim . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Recall Factory Trim—Analog Output . . . . . . . . . . . . . . . . . . . . . . . 4-8
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Analog Output Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Digital-to-Analog Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Digital-to-Analog Trim Using Alternate Scale . . . . . . . . . . . . . . . . 4-11
AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
SECTION 5
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
APPENDIX A
Reference Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
APPENDIX B
Approval Information
Factory Mutual (FM) Approvals . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
TOC-4

Reference Manual
00809-0100-4022, Rev AA
July 2002 Model 4600
www.rosemount.com
Section 1 Introduction
USING THIS MANUAL The sections in this manual provides information on installing, operating, and
maintaining the Rosemount Model 4600 transmitter. The sections are
organized as follows:
•Section 2: Installation contains mechanical and electrical installation
instructions.
•Section 3: Configuration provides instruction on commissioning and
configuring the Model 4600 transmitter. Information on software
functions, configuration parameters, and online variables is also
included.
•Section 4: Operation and Maintenance contains operation and
maintenance instructions.
•Section 5: Troubleshooting provides troubleshooting techniques for
the most common operating problems.
•Appendix A: Reference Data supplies reference and specification
data, as well as ordering information.
•Appendix B: Approval Information

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
1-2
Service Support To expedite the return process outside of the United States, contact the
nearest Rosemount representative.
Within the United States, call the Rosemount National Response Center using
the 1-800-654-RSMT (7768) toll-free number. This center, available 24 hours
a day, will assist you with any needed information or materials.
The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
process material to which the product was last exposed.
Rosemount National Response Center representatives will explain the
additional information and procedures necessary to return goods exposed to
hazardous substances.
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of and understand the hazard. If the product being returned was exposed to a
hazardous substance as defined by OSHA, a copy of the required Material Safety Data
Sheet (MSDS) for each hazardous substance identified must be included with the returned
goods.

Reference Manual
00809-0100-4022, Rev AA
July 2002 Model 4600
www.rosemount.com
Section 2 Installation
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4
Hazardous Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-8
Grounding the Transmitter Case . . . . . . . . . . . . . . . . . . . . page 2-9
OVERVIEW The information in this section covers installation considerations. A Quick
Installation Guide (document number 00825-0100-4022) is shipped with
every transmitter to describe basic mounting and wiring procedures for initial
installation.
HART Communicator and AMS instructions are provided to allow users to
perform configuration functions. For convenience, HART Communicator fast
key sequences are provided and labeled “Fast Keys” for each software
function below the appropriate headings.
SAFETY MESSAGES Procedures and instructions in this section may require special precautions to
ensure the safety of the personnel performing the operation. Information that
raises potential safety issues is indicated with a warning symbol ( ). Refer
to the following safety messages before performing an operation preceded by
this symbol.

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-2
Warnings
GENERAL
CONSIDERATIONS
Measurement accuracy depends upon proper installation of the transmitter
and impulse piping. Mount the transmitter close to the process and use a
minimum of piping to achieve best accuracy. Also, consider the need for easy
access, personnel safety, practical field calibration, and a suitable transmitter
environment. Install the transmitter to minimize vibration, shock, and
temperature fluctuation. Appendix A: Reference Data lists temperature
operating limits.
MECHANICAL
CONSIDERATIONS
NOTE
For applications with process temperatures greater than the limits of the
transmitter, do not blow down impulse piping through the transmitter. Flush
lines with the blocking valves closed and refill lines with water before
resuming measurement.
Explosions can result in death or serious injury.
• Transmitters located in hazardous areas should be installed in accordance with
local codes and requirements for that area.
• Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Electrical shock can result in death or serious injury.
• Avoid contact with the exposed leads and terminals. High voltage that may be
present on leads can cause electrical shock.
Process leaks could result in death or serious injury.
• Properly tighten process connections before applying pressure.
Apply torque only to the hex flat located at the process end of the transmitter. Do not apply
torque to the transmitter body or electrical connection - severe damage could result. Do not
exceed 100 ft-lbs.

Reference Manual
00809-0100-4022, Rev AA
July 2002
2-3
Model 4600
Figure 2-1. HART Installation
Flowchart
START HERE
Bench
Calibration? Field Install
(Section 2)
No
Configure
(Section 3)
Set Units
Set Range
Points
Set Output
Type
Set Damping
Verify
Apply Pressure
Yes
Within
Specifications
?
Yes
No
Refer to
Section 5
Troubleshooting
Mount
Transmitter
(page 2-4)
Wire Transmitter
(pages 2-6–2-9)
Power
Transmitter
(page 2-6)
Zero Out Sealed
Gauge Effects
(page 2-7)
Done
Confirm
Transmitter
Configuration
(page 3-5)
Confirm
Transmitter
Configuration
(page 3-21)

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-4
INSTALLATION
PROCEDURES
For dimensional drawing information refer to Appendix A: Reference Data on
page A-5.
Zero and Span Target Orientation
Mount the transmitter with sufficient clearance so the zero and span targets
are accessible.
Mount the Transmitter Panel Mount
Electrical Connection
1. Pull the leads through the threaded mounting hole in the panel wall.
2. Hand tighten the electrical connection into the mounting hole.
3. Using a wrench on the hex flat at the process connection, apply sufficient
torque to prevent transmitter vibration. Do not exceed 100 ft-lbs.
Process Connection
1. Hand tighten the appropriate sized impulse piping into the process
connection.
2. Using a wrench on the hex flat at the impulse piping connection, apply
enough torque to prevent the process fluid from leaking. Do not exceed
100 ft-lbs.
NOTE
Apply torque only to the hex flat located at the process end of the transmitter.
Do not apply torque to the transmitter body or electrical connection - severe
damage could result. Do not exceed 100 ft-lbs.
NOTE
Integral conduit seal meets the requirements of NEC©2002 section 501:5 (A)
and 501.5 (B). No additional conduit seal is required.
NOTE
The Model 4600 features a reliable dual process seal design which meets the
requirements of NEC©2002 section 501:5 (F)(3) and API 14F 6.8.2.2. No
additional process sealing is required.
See “Safety Messages” on page 2-1 for complete warning information.

Reference Manual
00809-0100-4022, Rev AA
July 2002
2-5
Model 4600
Impulse Piping
The piping between the process and the transmitter must accurately transfer
the pressure to obtain accurate measurements. There are five possible
sources of error: pressure transfer, leaks, friction loss (particularly if purging is
used), trapped gas in a liquid line and liquid in a gas line.
The best location for the transmitter in relation to the process pipe depends on
the process itself. Use the following guidelines to determine transmitter
location and placement of impulse piping:
• Keep impulse piping as short as possible.
• For liquid service, slope the impulse piping at least 1 inch per foot
(8 cm per m) upward from the transmitter toward the
process connection.
• For gas service, slope the impulse piping at least 1 inch per foot (8 cm
per m) downward from the transmitter toward the process connection.
• Avoid high points in liquid lines and low points in gas lines.
• Use impulse piping large enough to avoid friction effects and blockage.
• Vent all gas from liquid piping legs.
• When purging, make the purge connection close to the process taps
and purge through equal lengths of the same size pipe. Avoid purging
through the transmitter.
• Keep corrosive or hot (above 200 °F [93.3 °C]) process material out of
direct contact with the transmitter.
• Prevent sediment deposits in the impulse piping.
• Avoid conditions that might allow process fluid to freeze within the
process connector.

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-6
Connect Wiring and
Power Up
Wiring
To make connections, connect the red lead to the positive terminal of the
power supply and the black lead to the positive terminal of the I/O card on the
PLC. Connect the green wire to panel ground. Keep green ground wire as
short as possible to minimize the effects of Radio Frequency Interference
(RFI).
Inductive-based transient protectors with more than 3 mH of inductance can
adversely affect the output of the Model 4600 transmitter. If your application
requires transient protection, it is recommended that you order a transmitter
with the transient protection option specified.
Figure 2-2. Model 4600 Field
Wiring
Signal Wiring Grounding
Do not run signal wiring in conduit or open trays with power wiring, or near
heavy electrical equipment.
Power Supply 4–20 mA Transmitters
The dc power supply should provide power with less than two percent ripple.
Total resistance load is the sum of resistance from signal leads and the load
resistance of the controller, indicator, and related pieces. Note that the
resistance of intrinsic safety barriers, if used, must be included.
NOTE
A minimum loop resistance of 250 ohms is required to communicate with a
HART Communicator. If a single power supply is used to power more than
one Model 4600 transmitter, the power supply and circuitry common to the
transmitter, should not have more than 20 ohms of impedance at 1200 Hz.
RL> 250 ohm
275 Hart
Communicator
Model 4600
Power
Supply
PLC
I/O
Card

Reference Manual
00809-0100-4022, Rev AA
July 2002
2-7
Model 4600
Figure 2-3. Power Supply Load
Limitations, 4–20 mA
Transmitters
Surges/Transients
The transmitter will withstand electrical transients of the energy level usually
encountered in static discharges or induced switching transients. However,
high-energy transients, such as those induced in wiring from nearby lightning
strikes, can damage the transmitter.
Optional Transient Protection
Transient protection can be ordered as a factory installed option (Option Code
T1 in the transmitter model number). Transient protection can not be added to
units ordered without the T1 option.
Zero the transmitter Performing a zero adjustment is a recommended step for sealed gauge
transmitters.
NOTE
Do not re-zero absolute transmitters.
Re-zeroing the transmitter allows for a single point adjustment to compensate
for any mounting position and sealed gauge effects. This can be done with a
zero trim (See “Sensor Trim” on page 4-5), 4-20mA rerange or with the zero
and span adjustments.
Voltage (V dc)
Load (Ohms)
*Communication requires a minimum loop resistance of 250 ohms.
1
387
11.25
Operating
Region
4600_0103B
Maximum field loop Resistance = 43.5 * (Power Supply Voltage - 11.25)

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-8
Re-zeroing HART Communicator
4mA Rerange
1. Vent the transmitter.
2. Follow the HART fast key sequence shown.
3. Select OK after the control is set to manual (see “Setting the Loop to
Manual” on page 3-2).
4. Select 1to set the 4mA point.
5. Select OK to set the new 4mA point.
6. Select 1to set the vented pressure as the new 4mA point.
7. Select 3to exit the screen.
8. Select OK to acknowledge that the loop can be returned to automatic
control.
Using the transmitter zero adjustment target
1. Vent the transmitter.
2. Set the 4mA point by touching the magnetic end of the provided
adjustment tool to the zero target (Z) on the transmitter. You must
maintain contact for at least two seconds, but no longer than ten seconds
for the zero function to activate.
3. Verify that the output is 4mA.
HAZARDOUS
LOCATIONS
The Model 4600 transmitter has an explosion-proof housing. Individual
transmitters are clearly marked with a tag indicating the certifications they
carry. See Appendix B: Approval Information for additional information.
NOTE
Once a device labeled with multiple approvals is installed, it should not be
reinstalled using any other approval type(s). Permanently mark the
certification label to distinguish the installed approval type from unused
approval types.
Fast Keys 1, 3, 3, 2

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-9
GROUNDING THE
TRANSMITTER CASE
Always ground the transmitter case in accordance with national and local
electrical codes. The most effective transmitter case grounding method is a
direct connection to earth ground with minimal impedance. Methods for
grounding the transmitter case include:
•Internal Ground Connection: The green lead provides the internal
ground connection, and is standard on all Model 4600 transmitters.
•External Ground Assembly: This assembly is included with the
optional transient protection (Option Code T1). The External Ground
Assembly can also be ordered with the transmitter (Option Code D4),
or as a spare part (4600-0113-0001).
NOTE
Grounding the transmitter case using the threaded electrical or process
connections may not provide a sufficient ground. The transient protection
(Option Code T1) will not provide transient protection unless the transmitter
case is properly grounded. Use the above guidelines to ground the transmitter
case. Do not run transient protection ground wire with signal wiring; the
ground wire may carry excessive current if a lightning strike occurs.

Reference Manual
00809-0100-4022, Rev AA
July 2002
Model 4600
2-10