Rosemount 3491 User Manual

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www.rosemount.com

Reference Manual

00809-0100-4841, Rev. AA

May 2007

Rosemount 3490 Series

Universal Control Unit

Table of Contents

Table of Contents5
Manual Overview10
Service Support11
Introduction to the 3490 Series13
- Summary of Features13
- Two Mounting Options13
- Transmitter Input14
- Control Functionality14
- Front Panel14
Control Unit Functions15
- Standard Functions (Models 3491/3492/3493)15
- Difference, Sum and Product Functions (Model 3492)15
- Logging Functions (Model 3493)15
Control Unit Front Panel16
- Keypad16
- Display17
- Status LED18
Safety Messages19
Before You Install20
- General Considerations20
Mounting the Rosemount 3490 Series Control Unit21
- Mounting the IP-Rated Wall Mount Models21
- Mounting the NEMA 4X-Rated Wall Mount Models21
- Mounting Panel Models22
Electrical Installation24
- Electrical Connections on Wall Mount Models24
- Electrical Connections on Panel Mount Model26
- Transmitter Connections and Cabling27
- Connecting HART Transmitters to 349228
- Power Connections29
- Earthing Connections29
- Relay Connections30
- Current Output Connections30
- Digital Control Voltage Free Contact Inputs30
- RS232 Connections31
Safety Messages33
Switching on34
- Switching on the 3491/349334
- Switching-On the 349235
The Hierarchical Menu System36
- How to Navigate the Menu System36
- About Parameter Screens38
Programming40
- Before You Begin40
- Comfort (System) Settings43
- Transmitter Inputs44
- To the 349044
- Profile Calculations for Contents and Flow Applications55
- Digital Inputs IN1 and IN265
- Logging (3493 Only)66
- Current Output70
- Relays71
- About Alarms91
- About Totalising on Model 349194
- About Totalising on Model 349296
- About Totalising on Model 349397
- Totalising Examples100
- Primary Display Options104
- Serial Communications106
- PIN Security107
SECTION 5 Safety Messages109
Safety Messages109
Servicing110
Health Checks110
- Health Check: 3490 Series Control Unit110
- Checks Health Checks110
- Health Check: Rosemount 3102/3105 Series Transmitters116
APPENDIX A Specifications119
Specifications119
Dimensional Drawings121
Ordering Information124
- Model Code 3491, Standard Control Unit124
- Model Code 3492, Differential Control Unit125
- Model Code 3493, Logging Control Unit126
APPENDIX B Safety Messages127
Safety Messages127
European Directive Information128
Hazardous Locations Certifications129
- ATEX Approvals129
- Underwriters Laboratories Inc. (UL) Approvals129
- Canadian Standards Association (CSA) Approvals130
- Iecex Approvals130
Approval Drawings131
Menus and Parameters135
- APPENDIX C Restoring the Factory Defaults145
- How to Restore the Factory Default Settings145
- Appendix D146
DIRECT Menu Screen146
APPENDIX E Support for HART149
Overview149
Fully Supported Transmitters149
Universal and Common Practice Commands149
- Universal Commands149
- Common Practice Commands150

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Rosemount 3491 Specifications

General

Brand	Rosemount
Model	3491
Category	Control Unit
Language	English