Rockwell Automation 1794-ASBLTA User Manual

Installation Instructions

FLEX I/O Remote I/O Adapter Module

1794-ASBLT Series D

WARNING

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.literature.rockwellautomation.com) 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.

WARNING

IMPORTANT

ATTENTION

SHOCK HAZARD

Use the 1794-ASBLT Series D adapter when communicating with Classic PLC-5/15 or PLC-5/25 via Remote I/O. The 1794-ASBLT Series D adapter is a replacement for the 1794-ASB Series D adapter only when communicating with PLC-5/15 or PLC5/25.

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.

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

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that dangerous voltage may be present.

ATTENTION

WARNING

ATTENTION

Environment and Enclosure

This equipment is intended for use in a Pollution Deg ree 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.

When you insert or remove the module while backplane power is on, or connect or disconnect the serial cable with power applied to this module or the serial device on the other end of the cable, 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 grounding.

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.

BURN HAZARD

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that surfaces may be dangerous temperat ures.

Publication 1794-IN110A-EN-P - August 2005

North American Hazardous Location Approval

The following information applies when operating this equipment in hazardous locations:

Products marked “ CL I, DIV 2, GP A, B, C, D” are suitable for use in C lass I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazar dous locations only. Each product is supp lied with markings on the rating namepla te indicating the ha zardous location temperature co de. When combining produ cts within a system, the most adverse temperature code (lowest “T” number ) may be used to help deter mine the overall temperatur e code of the system. Combinations of equipment in your sys tem are subject to investiga tion by the local Authority Having Jurisdic tion at the time of in stallation.

WARNING

EXPLOSION HAZARD

• Do not disconnect equipment unless power has been remove d or the area is known to be nonha zardous.

• Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazard ous. Secure any external connections that mate to this eq uipment 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 ar ea known to be nonhazardous .

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

Les produits marq ués "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 d angereux et non dangereux. Chaq ue produit est livré avec des marquages sur sa plaque d’iden tification qui indiqu ent 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 ê tre utilisé pour détermine r le code de température global du syst ème. Les combinaisons d’équipements dans le système sont su jettes à inspection par les autorités locales qualifiées au moment de l’installation.

VERTISSEME NT

RISQUE D’EXPLOSION

• Couper le cour ant ou s’assurer que l’environnem ent est classé non dangereux a vant de débrancher l'éq uipement.

• Couper le cour ant ou s'assurer que l’environnem ent est classé non dangereux a vant de débrancher les connecteurs. Fixer tous les con necteurs externes reliés à cet équip ement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.

• La substitution de composants peut rendre c et équipement inadapté à une ut ilisation en environnement de Classe I, Division 2.

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

Remote I/O Adapter, Cat. No. 1794-ASBLT Series D

These adapters are shipped configured for standard addressing mode. In Standard Addressing Mode, the 1794-ASBLT series D adapter can be used as a replacement for 1794-ASB series A and B remote I/O adapters.

1794-ASBLT

4, 5

Component Identification

1 Remote I/O Adapter Module 2 Indicators 3 Communication reset button (PRL) 4 Access door to switches S1 and S2 5 Switches S1 and S2 (behind door) 6 Remote I/O cable connector 7 +V dc connections 8 -V common connections 9 Flexbus connector

Install Your Adapter Module

ATTENTION

During mounting of all devices, be sure that all debris (such as metal chips or wire strands) is kept from falling into the module. Debris that falls into the module could cause damage on power up.

Mount on a DIN Rail Before Installing the Terminal Base Units

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

2. Press the adapter module down onto the DIN rail until flush. Locking tab C will snap into position and lock the adapter module to the DIN rail.

3. 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.

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

Mount (or Replace) the Adapter on an Existing System

1. Remove the RIO plug-in connector from the front of the adapter.

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

WARNING

3. Open the module latching mechanism and remove the module from the base unit to which the adapter will be attached.

4. Push the flexbus connector toward the right side of the terminal base to unplug the backplane connection. (When fully retracted, you will see a raised dot on the connector.)

5. Release the adapter locking tab and remove the adapter module.

6. Before installing the new adapter, notice the notch on the right rear of

the adapter. This notch accepts the hook on the terminal base unit. The notch is open at the bottom. The hook and adjacent connection point keep the terminal base and the adapter tight together, reducing the possibility of a break in communication over the backplane.

7. Complete the adapter mounting as shown below.

Publication 1794-IN110A-EN-P - August 2005

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