Omega Products CN3261 Installation Manual

User’s Guide

Shop online at

omega.com

®

www.omega.com

e-mail: [e-mail]

For latest product manuals:

www.omegamanual.info

CN3261

Limit Controller

®

Rev. 9-04

Omega

OMEGAnet®Online Service Internet e-mail

USA: One Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford CT 06907-0047

Canada: 976 Bergar

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

omega.com

®

®

www.omega.com [e-mail]

Servicing North America:

TEL: [phone] FAX: [phone]
e-mail: [e-mail]

Laval (Quebec) H7L 5A1
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

®

Customer Service: 1-800-622-2378 / 1-800-622-BEST
Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

®

®

Mexico: En Espan˜ol: [phone]-7803 e-mail: [e-mail]

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Rudé armády 1868, 733 01 Karviná 8

TEL: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

TEL: [phone] FAX: [phone]
Toll Free in France: 0800-4-06342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

TEL: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
TEL: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

CN 3261

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

CN 3261 Temperature Limit Controller

Introduction

Description

Features

Specifications

The CN3261 protects expensive heaters and sensitive materials from damaging
over temperature conditions. It is designed for industrial and commercial
applications that require high temperature protection.

The CN3261 features a Form C latching, manually resettable relay output that
de-energizes whenever the sensed temperature exceeds the set point tempera­ture.

The DIN Rail mounting feature allows quick installation without drilling or
extra hardware. Slots are also provided for direct panel mounting.

Two methods are provided to reset an alarm condition. (1) The CN3261 alarm
has a reset pushbutton on the unit and (2) reset terminals are provided for
resetting the alarm from a remote pushbutton.

• Protects processes and equipment from excessive temperatures

• DIN Rail and sub-panel mounting

• J, K thermocouple or RTD input

•Terminals provided for remote pushbutton reset

• Latching, normally energized, 3 amp relay output

Power Input: 120VAC or 24VAC ±15%, 50/60Hz, 3VA max. standard

Control Output: SPDT Relay rated 3.8 Amps Res. and 1.5 Amps Pilot Duty

120 VAC. 100,000 cycles.

Control Mode: Latching with Manual Reset or power off.

Reset Function: Integral reset switch standard; terminals available for optional

remote reset switch.

Set Point Adjustment: Local SP dial adjustment.

Compensation (TC only): Automatic cold junction compensation.

Control Stability: Typically less than ±5µV/°F ambient and 0.1% of SPAN/%

rated line voltage.

Set Point Accuracy: ±3% of FS maximum at 25°C and rated line voltage.

Sensor Break Protection: Contacts 4 and 5 open for thermocouple or RTD break.

Ambient Operating Temperature: 0 - 60°C (32 - 140°F).

Noise Rejection:

Common Mode Rejection: 60dB, Series Mode Rejection: 120dB

Approvals: UL Registered, Canadian UL Registered, Factory Mutual

1

CN 3261