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

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
2
3
4
5
6
7
1
1

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.)
A
C
B
Top
Bottom
Side
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
B
C
A