Rockwell Automation 1764-28BXB User Manual

Installation Instructions

MicroLogix™ 1500 Programmable Controller Base Units

(Catalog Numbers 1764-24AWA, 1764-24BWA, and 1764-28BXB)

http://literature.rockwellautomation.com/idc/groups/literature/documents/in/1 764-in001_-mu-p.pdf

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2 MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-IN001B-EN-P - March 2008

Installation Instructions

MicroLogix™ 1500 Programmable Controller Base Units

(Catalog Numbers 1764-24AWA, 1764-24BWA, and 1764-28BXB)

Inside...

For More Information.............................................................................. 4

Overview ................................................................................................. 5

Base Unit Description ............................................................................. 6

Hazardous Location Considerations ....................................................... 7

Mounting the Controller ......................................................................... 9

Wiring the Controller ............................................................................ 13

Specifications ....................................................................................... 17

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4 MicroLogix™ 1500 Programmable Controller Base Units

For More Information

Table 1 Related Publications

For Refer to this Document Pub. No.

A more detailed description of how to install and use your MicroLogix 1500 programmable controller.

A reference manual that contains data and functin files, instruction set, and troubleshooting information for MicroLogix 1200 and MicroLogix 1500.

More information on proper wiring and grounding techniques.

If you would like a manual, you can:

• download a free electronic version from the internet:

http://literature.rockwellautomation.com

• purchase a printed manual by contacting your local Allen-Bradley distributor or Rockwell Automation representative

MicroLogix 1500 Programmable Controllers User Manual

MicroLogix 1200 and MicroLogix 1500 Instruction Set Reference Manual

Industrial Automation Wiring and Grounding Guidelines

1764-UM001A-US-P

1762-RM001B-US-P

1770-4.1

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MicroLogix™ 1500 Programmable Controller Base Units 5

Overview

Install your controller using these installation instructions.

ATTENTION

Do not remove protective debris strips until after the base and all other equipment in the panel near the base is mounted and wiring is complete. Once wiring is complete, remove protective debris strips and install processor unit. Failure to remove strips before operating can cause overheating.

Protective Debris Strips

ESD Sticker

Be careful of metal chips when drilling mounting holes for your controller or other equipment within the enclosure or panel. Drilled fragments that fall into the controller could cause damage. Do not drill holes above a mounted controller if the protective debris strips have been removed.

ATTENTION

Electrostatic discharge can damage semiconductor devices inside the base unit. Do not touch the connector pins or other sensitive areas.

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6 MicroLogix™ 1500 Programmable Controller Base Units

Base Unit Description

Table 2 Standard Base Units

Catalog Number Base Unit I/O and Power Supply

1764-24AWA 120V ac inputs/ relay outputs/ 120/240V ac power supply 1764-24BWA 24V dc inputs/ relay outputs/ 120/240V ac power supply 1764-28BXB 24V dc inputs/ FET and relay outputs/ 24V dc power supply

Table 3 Base Unit Description

Feature Description

1 Removable Terminal Blocks 2 Interface to Expansion I/O, Removable ESD Sticker 3 Input LEDs 4 Output LEDs 5 RS-232 Communication Port (CH0) 6 Status LEDs 7 Terminal Doors and Label

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MicroLogix™ 1500 Programmable Controller Base Units 7

Hazardous Location Considerations

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non-hazardous locations only. The following WARNING statement applies to use in hazardous locations.

WARNING

Use only the following communication cables in Class I, Division 2 hazardous locations.

Table 4 Cable Listing

Environment Classification Communication Cables

Class I, Division 2 Hazardous Environment 1761-CBL-PM02 Series C or later

EXPLOSION HAZARD

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

• Do not replace components or disconnect equipment unless power has been switched off or the area is known to be non-hazardous.

• Do not connect or disconnect components unless power has been switched off or the area is known to be non-hazardous.

• This product must be installed in an enclosure. All cables connected to the product must remain in the enclosure or be protected by conduit or other means.

• All wiring must comply with N.E.C. article 501-4(b).

1761-CBL-HM02 Series C or later 1761-CBL-AM00 Series C or later 1761-CBL-AP00 Series C or later 2707-NC8 Series B or later 2707-NC10 Series B or later 2707-NC11 Series B or later

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8 MicroLogix™ 1500 Programmable Controller Base Units

Environnements dangereux

Cet équipement est conçu pour être utilisé dans des environnements de Classe 1, Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante s’applique à une utilisation dans des environnements dangereux.

MISE EN GARDE

DANGER D’EXPLOSION

• La substitution de composants peut rendre cet équipement impropre à une utilisation en environnement de Classe 1, Division 2.

• Ne pas remplacer de composants ou déconnecter l'équipement sans s'être assuré que l'alimentation est coupée et que l'environnement est classé non dangereux.

• Ne pas connecter ou déconnecter des composants sans s'être assuré que l'alimentation est coupée ou que l'environnement est classé non dangereux.

• Ce produit doit être installé dans une armoire. Tous les câbles qui lui sont connectés doivent rester dans l'armoire ou être protégés par un conduit ou par d'autres moyens.

N'utilisez que les câbles de communication suivants dans des environnements dangereux de Classe 1, Division 2.

Table 5 Liste des câbles

Classification d'environnement Câbles de communication

Environnement dangereux Classe 1, Division 2

1761-CBL-PM02, série C ou ultérieure 1761-CBL-HM02, série C ou ultérieure 1761-CBL-AM00, série C ou ultérieure 1761-CBL-AP00, série C ou ultérieure 2707-NC8, série B ou ultérieure 2707-NC10, série B ou ultérieure 2707-NC11, série B ou ultérieure

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MicroLogix™ 1500 Programmable Controller Base Units 9

Mounting the Controller

General Considerations

Most applications require installation in an industrial enclosure (Pollution Degree

2) to reduce the effects of electrical interference (Over Voltage Category II) and environmental exposure. Locate your controller as far as possible from power lines, load lines, and other sources of electrical noise such as hard-contact switches, relays, and AC motor drives. For more information on proper grounding guidelines, see the Industrial Automation Wiring and Grounding Guidelines publication 1770-4.1.

ATTENTION

Vertical mounting is not recommended due to heat build-up considerations.

ATTENTION

NOTE

Be careful of metal chips when drilling mounting holes for your controller or other equipment within the enclosure or panel. Drilled fragments that fall into the base or processor unit could cause damage. Do not drill holes above a mounted controller if the protective debris strips have been removed or the processor has been installed.

Remove the ESD sticker to install expansion I/O modules. An end cap terminator (catalog numbers 1769-ECR or -ECL) or an extension cable (catalog numbers 1769-CRR1, -CRR3,

-CLL1, -CLL3, -CRL1, -CRL3) must be used at the end of the group of I/O modules attached to the MicroLogix 1500 Controller. The end cap terminator is not provided with the base unit. A maximum of eight I/O modules may be connected to the base.

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