Rockwell Automation 1794-ACN15, 1794-ACNR15 User Manual

Installation Instructions

WARNING

IMPORTANT

ATTENTION

WARNING

ATTENTION

IMPORTANT

FLEX I/O ControlNet Adapter Modules

Cat. No. 1794-ACN15, ACN15K, -ACNR15 and

-ACNR15K, Series B

(Modules with a K in the last position of the catalog number are conformally coated to meet noxious gas requirements of ISA/ANSI-71.040 1985 Class G3 Environment.)

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

When you insert or remove the module while backplane power is on, or connect or disconnect the ControlNet cable with power applied to the module or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

If you connect or disconnect wiring while the field side power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding..

FLEX I/O is grounded through the DIN rail to chassis ground. Use zinc plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (e.g. aluminum, plastic, etc.) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent g rounding.

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

European Hazardous Location Approval

The following adapters are European Zone 2 approved: 1794-ACN15/C,

-ACN15K/C, -ACNR15/C and -ACNR15K/C.

Identifies information that is critical for successful application and understanding of the product.

Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you:

• identify a hazard

• avoid a hazard

• recognize the consequence

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as "open type" equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Also, see the appropriate sections in this publication, as well as the Allen-Bradley publication 1770-4.1 ("Industrial Automation Wiring and Grounding Guidelines"), for additional installation requirements pertaining to this equipment.

European Zone 2 Certification (The following applies when the product bears the EEx Marking)

This equipment is intended for use in potentially explosive atmospheres as defined by European Union Directive 94/9/EC.

The LCIE (Laboratoire Central des Industries Electriques) certifies that this equipment has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of Category 3 equipment intended for use in potentially explosive atmospheres, given in Annex II to this Directive. The examination and test results are recorded in confidential report No. 28 682 010.

Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 50021.

Observe the following additional Zone 2 certification requirements.

• This equipment is not resistant to sunlight or other sources of

UV radiation.

• The secondary of a current transformer shall not be

open-circuited when applied in Class I, Zone 2 environments.

• Equipment of lesser Enclosure Type Rating must be installed in

an enclosure providing at least IP54 protection when applied in Class I, Zone 2 environments.

• This equipment shall be used within its specified ratings

defined by Allen-Bradley.

• Provision shall be made to prevent the rated voltage from being

exceeded by transient disturbances of more than 40% when applied in Class I, Zone 2 environments

FLEX I/O is a trademark of Rockwell Automation ControlNet is a trademark of ControlNet International Publication 1794-IN101B-EN-P - June 2004

WARNING

AVERTISSEMEN

ATTENTION

WARNING

North American Hazardous Location Approval

The following adapters are North American Hazardous Location approved: 1794-ACN15/C, -ACN15K/C, -ACNR15/C and -ACNR15K/C.

The following information applies when operating this equipment in hazardou s locations:

Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest “T” number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation.

EXPLOSION HAZARD

• Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

• Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.

• Substitution of components may impair suitability for Class I, Division 2.

• If this product contains batteries, they must only be changed in an area known to be nonhazardous.

Informations sur l’utilisation de cet équipement en environnements dangereux :

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu’à une utilisation en environnements de Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. Chaque produit est livré avec des marquages sur sa plaque d’identification qui indiquent le code de température pour les environnements dangereux. Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable (code de température le plus faible) peut être utilisé pour déterminer le code de température global du système. Les combinaisons d’équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l’installation.

RISQUE D’EXPLOSION

• Couper le courant ou s’assurer que l’environnement est classé non dangereux avant de débrancher l'équipement.

• Couper le courant ou s'assurer que l’environnement est classé non dangereux avant de débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.

• La substitution de composants peut rendre cet équipement inadapté à une utilisation en environnement de Classe I, Division 2.

• S’assurer que l’environnement est classé non dangereux avant de changer les piles.

ControlNet Adapter, Cat. No. 1794-ACN15 and 1794-ACNR15

This version of the 1794-ACN15(K) and -ACNR15(K) adapters changed how the adapter firmware is displayed in RSNetworx for ControlNet (Rev 3.0 and earlier). Previous versions of the adapters displayed an alpha for the firmware version (C/F = major firmware revision C [3] , minor firmware revision F [6] ). This current release will display the firmware revision numerically. (Ex. 4.1 = major firmware revision 4, minor firmware revision 1). The Series remains unchanged as Series

Customers using RSNetworx for ControlNet (Revision 3.21 or later) will see all current and previous versions of 1794-ACN15 and -ACNR15 adapter firmware displayed numerically.

Installing Your ControlNet Adapter Module

During mounting of all devices, be sure that all deb ri s ( metal ch ip s, wi re st rands , e tc .) is k ep t f rom falling into the module. Debris that falls into the module could cause damage on power up.

Mounting on a DIN rail before installing the Terminal Base Units

1. Position the ControlNet adapter module (A) on a 35 x 7.5mm DIN rail (B) at a slight angle.

2. Hook the lip on the rear of the adapter onto the top of the DIN rail, and rotate the adapter module onto the rail.

3. Press the adapter module down onto the DIN rail until flush. Locking

Component Identification

1 ControlNet Adapter Module 2 Indicators 3A ControlNet network cable BNC connector A 3B ControlNet network cable BNC connector B

4 ControlNet Node selection thumbwheel switches 5 ControlNet programming terminal connector port 6 Module locking tab 7 +24V dc connections 8 24V common connections 9 Flexbus connector

1794-ACN15(K) and 1794-ACNR15(K) Series C, Firmware 4.1, of the FLEX I/O ControlNet Single and Redundant adapters allow the 1794-ACN15(K) and 1794-ACNR15(K) to talk with the 1794-OB32 module. (Previous versions of the 1794-ACN15 and -ACNR15 adapters would not properly communicate with the new 1794-OB32 module.)

(1794-ACNR15 only

tab C will snap into position and lock the adapter module to the DIN rail.

4. If the adapter module does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter module flush onto the DIN rail, and release the locking tab to lock the adapter module in place. If necessary, push up on the locking tab to lock.

5. Connect the adapter wiring as shown under “Wiring” later in this document.

Panel/Wall Mounting

If mounting this adapter to a panel or wall, refer to publication 1794-5.13, “Panel Mounting Kit, Cat. No. 1794-NM1.”

Mounting (or Replacing) the Adapter on an Existing System

1. Disconnect any wiring jumpered to the adjacent terminal base.

2. Disconnect the BNC connector(s) from the front of the adapter

If you connect or disconnect the ControlNet cable with power applied to this module or any device on the network, an electrical arc can ocur. This could cause an explosion in hazardous installations. Be sure that power is removed or the area is nonhazardous before proceeding.

Publication 1794-IN101B-EN-P - June 2004

+ 2 hidden pages