Allen-Bradley Micrologix 1500 User manual

Publication 1764-5.1

MicroLogix™ 1500 Programmable

Controller Base Units

(Catalog Numbers 1764-24AWA, 1764-24BWA,

and 1764-28BXB)

Installation Instructions

Inside...

English Section........................................................................... 3

Français.................................................................................... 19

Deutscher Abschnitt.................................................................. 35

Sezionein Italiano..................................................................... 51

Sección en español................................................................... 67

Seção em Português ................................................................ 83

2MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-5.1

English Section

MicroLogix™ 1500 Programmable

Controller Base Units

(Catalog Numbers 1764-24AWA, 1764-24BWA,

and 1764-28BXB)

Installation Instructions

Inside...

ForMore Information .................................................................. 4

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

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

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

Mounting the Controller............................................................... 8

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

Specifications............................................................................ 16

4MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-5.1

For More Information

If you would like a manual, you can:

• download a free electronic version from the internet:

www.ab.com/micrologix or www.theautomationbookstore.com

• purchase a printed manual by:

– contacting your local distributor or Rockwell Automation representative

– visiting www.theautomationbookstore.com and placing your order

– calling 1.800.9NEWLIT(800.963.9548) (USA/Canada)

or 001.330.725.1574 (Outside USA/Canada)

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. MicroLogix 1500 Programmable

ControllersUser Manual 1764-6.1

More information on proper wiring and

grounding techniques. Industrial Automation Wiring

and Grounding Guidelines 1770-4.1

MicroLogix™ 1500 Programmable Controller Base Units 5

Publication 1764-5.1

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.

!ATTENTION: 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.

Protective

Debris Strips

ESD Sticker

6MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-5.1

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 acpower 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 Interfaceto Expansion I/O, Removable ESD Sticker

3 Input LEDs

4 Output LEDs

5 Communication Port

6 Status LEDs

7 Terminal Doors and Label

MicroLogix™ 1500 Programmable Controller Base Units 7

Publication 1764-5.1

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 ATTENTION statement applies to

use in hazardous locations.

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

locations.

!ATTENTION: 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.

Table 4: Cable Listing

Environment Classification Communication Cables

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

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

8MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-5.1

Mounting the Controller

General Considerations

Most applications require installation in an industrialenclosure (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.

Note: Remove the ESD sticker to install expansion I/O modules. An end cap

terminator (catalog number 1769-ECR) 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 8

I/O modules may be connected to the base.

!ATTENTION: Vertical mounting is not recommended due to

heat build-up considerations.

!ATTENTION: 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.

MicroLogix™ 1500 Programmable Controller Base Units 9

Publication 1764-5.1

Mounting Dimensions

Controller Spacing

The base unit is designed to be mounted horizontally, with the Compact™

expansion I/O extending to the right of the base unit. Allow 50 mm (2 in.) of

space on all sides for adequate ventilation, as shown below.

Table 5: Dimensions

Dimension 1764-24AWA 1764-24BWA 1764-28BXB

Height (A) 138 mm (5.43 in.)

Width (B) 168 mm (6.62 in.)

Depth (C) 87 mm (3.43 in.)

Top

Bottom

Side

10 MicroLogix™ 1500 Programmable Controller Base Units

Publication 1764-5.1

Using a DIN Rail

The base unit and expansion I/O DIN rail latches lock in the open position so that

an entire system can be easily attached to or removed from the DIN rail. The

maximum extension of the latch is 15 mm (0.67 in.) in the open position. A flat-

blade screw driver is required for removal of the base unit. The base can be

mounted to EN50022-35x7.5 or EN50022-35x15 DIN rails. DIN rail mounting

dimensions are shown below.

To install your base unit on the DIN rail:

1. Mount your DIN rail. (Make sure that the placement of the base unit on the

DIN rail meets the recommended spacing requirements, see “Controller

Spacing” on page 9. Refer to the mounting template from the inside back

cover of this document.)

2. Hook the top slot over the DIN rail.

3. While pressing the base unit down against the top of the rail, snap the

bottom of the base unit into position.

4. Leave the protective debris strip attached until you are finished wiring the

base unit and any other devices.

Table 6: DIN Rail Mounting Dimensions

Dimension Height

A 138 mm (5.43 in.)

B 47.6 mm (1.875 in.)

C47.6 mm (1.875in) DIN latch closed

54.7 mm (2.16 in.) DIN latch open

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