Rockwell Automation micrologix 1200 User manual

Installation Instructions
MicroLogix™ 1200 Programmable Controllers
(Cat. No. 1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L40AWA,
1762-L40BWA, 1762-L40BXB, 1762-L24AWAR, 1762-L24BWAR,
1762-L24BXBR, 1762-L40AWAR, 1762-L40BWAR, 1762-L40BXBR)
http://literature.rockwellautomation.com/idc/groups/literature/documents/in/1
762-in006_-mu-p.pdf
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Installation Instructions
MicroLogix 1200 Programmable Controllers
(Cat. No. 1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L40AWA,
1762-L40BWA, 1762-L40BXB, 1762-L24AWAR, 1762-L24BWAR,
1762-L24BXBR, 1762-L40AWAR, 1762-L40BWAR, 1762-L40BXBR)
Inside . . .
Important User Information ................................................................................. 4
For More Information ........................................................................................... 5
Overview .............................................................................................................. 6
Controller Description .......................................................................................... 7
Hazardous Location Considerations .................................................................... 8
Mounting the Controller .................................................................................... 10
Connecting 1762 I/O Expansion Modules ......................................................... 14
Wiring the Controller ......................................................................................... 15
Specifications .................................................................................................... 21

4MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
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.
WARNING 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.
IMPORTANT
Identifies information that is critical for successful application and understanding of the
product.
ATTENTION
Identifies information about practices or circumstances that can lead to personal injury
or death, property damage, or economic loss. Attentions help you:
xidentify a hazard
xavoid a hazard
xrecognize the consequence
SHOCK HAZARD
Labels may be located on or inside the drive to alert people that dangerous voltage may
be present.
BURN HAZARD
Labels may be located on or inside the drive to alert people that surfaces may be
dangerous temperatures.

MicroLogix 1200 Programmable Controllers 5
Publication 1762-IN006C-EN-P - September 2009
For More Information
Related Publications
If you would like a manual, you can:
xdownload a free electronic version from the internet:
http://literature.rockwellautomation.com\
xpurchase a printed manual by contacting your local Allen-Bradley distributor or
Rockwell Automation representative
For Refer to this Document Pub. No.
A more detailed description of how to
install and use your MicroLogix 1200
programmable controller and expansion
I/O system.
MicroLogix™ 1200 Programmable
Controllers User Manual
1762-UM001
A reference manual that contains data
and function files, instruction set, and
troubleshooting information for
MicroLogix 1200 and MicroLogix 1500.
MicroLogix™ 1200 and
MicroLogix™ 1500 Instruction Set
Reference Manual
1762-RM001
Information on installing and using 1762
expansion I/O modules.
Installation Instructions are included
with each module. Also available via
www.theautomationbookstore.com.
1762-INxxx
More information on proper wiring and
grounding techniques.
Industrial Automation Wiring and
Grounding Guidelines
1770-4.1

6MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
Overview
MicroLogix™ 1200 Controllers are suitable for use in an industrial environment when
installed in accordance with these instructions. Specifically, this equipment is intended for use
in clean, dry environments (Pollution degree 2(1)) and to circuits not exceeding Over Voltage
Category II(2) (IEC 60664-1).(3)
Install your controller using these installation instructions.
(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that occasionally a
temporary conductivity caused by condensation shall be expected.
(2) Over Voltage Category II is the load level section of the electrical distribution system. At this level transient voltages are
controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC) designations.
ATTENTION
Do not remove the protective debris strip until after the
controller and all other equipment in the panel near the
controller is mounted and wiring is complete. Once wiring is
complete, remove protective debris strip. Failure to remove
strip before operating can cause overheating.
ATTENTION
Electrostatic discharge can damage semiconductor devices
inside the controller. Do not touch the connector pins or other
sensitive areas.
debris strip

MicroLogix 1200 Programmable Controllers 7
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Controller Description
Item Description Item Description
1 Terminal Blocks
(Removable Terminal Blocks on
40-point controllers only)
7 Terminal Doors and Label
2 Bus Connector Interface to
Expansion I/O
8 Trim Pots
3 Input LEDs 9 Default Communications Push Button
4 Output LEDs 10 Memory Module Port Cover(1) -or-
Memory Module and/or Real Time Clock(2)
(1) Shipped with controller
(2) Optional equipment.
5 Communication Port (Channel 0) 11 DIN Rail Latches
6 Status LEDs 12 Programmer/HMI Port
(Equipped with 1762-LxxxxxR controllers only)
12
1
2
3
4
5
6
7
7
9
8
10
11
0
1
COM

8MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
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.
Use only the following communication cables in Class I, Division 2 hazardous locations.
Catalog Number Description
Input Power Inputs Outputs
1762-L24AWA, -L24AWAR 120/240V ac (14) 120V ac (10) relay
1762-L24BWA, -L24BWAR 120/240V ac (10) 24V dc
(4) fast 24V dc
(10) relay
1762-L24BXB, -L24BXBR 24V dc (10) 24V dc
(4) fast 24V dc
(5) relay, (4) 24V dc FET
(1) high-speed 24V dc FET
1762-L40AWA, -L40AWAR 120/240V ac (24) 120V ac (16) relay
1762-L40BWA, -L40BWAR 120/240V ac (20) 24V dc
(4) fast 24V dc
(16) relay
1762-L40BXB, -L40BXBR 24V dc (20) 24V dc
(4) fast 24V dc
(8) relay, (7) 24V dc FET
(1) high-speed 24V dc FET
WARNING EXPLOSION HAZARD
xSubstitution of components may impair suitability for Class
I, Division 2.
xDo not replace components or disconnect equipment
unless power has been switched off.
xDo not connect or disconnect components unless power
has been switched off.
xThis 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.
xAll wiring must comply with N.E.C. article 501-4(b).

MicroLogix 1200 Programmable Controllers 9
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Environnements dangereux
Cet équipement est conçu pour être utilisé dans des environnements de Classe I, Division 2,
Groupes A, B, C, D ou non dangereux. La mise en garde suivante s’applique à utilisation en
environnements dangereux.
Utiliser uniquement les câbles de communication suivants dans les environnements
dangereux de Classe I, Division 2.
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
DANGER D’EXPLOSION
xLa substitution de composants peut rendre cet équipement
impropre à une utilisation en environnement de Classe I,
Division 2.
xNe pas remplacer de composants ou déconnecter
l’équipement sans s’être assuré que l’alimentation est
coupée.
xNe pas connecter ou déconnecter des composants sans
s’être assuré que l’alimentation est coupée.
xCe produit doit être installé dans une armoire. Tous les
câbles connectés à l’appareil doivent rester dans l’armoire
ou être protégés par un conduit ou tout autre moyen.
xL’ensemble du câblage doit être conforme à la
réglementation en vigueur dans les pays où l’appareil est
installé.
AVERTISSEMENT

10 MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
Mounting the Controller
General Considerations
Most applications require installation in an industrial enclosure to reduce the effects of
electrical interference 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.
Classification des environnements Câbles de communication
Environnement dangereux de Classe I, 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
707-NC8 série B ou ultérieure
2707-NC10 série B ou ultérieure
2707-NC11 série B ou ultérieure
ATTENTION
Vertical mounting is not recommended due to thermal
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 controller could
cause damage. Do not drill holes above a mounted controller
if the protective debris strips have been removed.

MicroLogix 1200 Programmable Controllers 11
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Mounting Dimensions
Dimension 1762-
L24AWA,
L24AWAR
L24BWA,
L24BWAR
L24BXB,
L24BXBR
L40AWA,
L40AWAR
L40BWA,
L40BWAR
L40BXB,
L40BXBR
A 90 mm (3.5 in.) 90 mm (3.5 in.)
B 110 mm (4.33 in.) 160 mm (6.30 in.)
C 87 mm (3.43 in.) 87 mm (3.43 in.)
C
B
A
C
B
A
1762-L24AWA, 1762-L24BWA, 1762-L24BXB,
1762-L24AWAR, 1762-L24BWAR, 1762-L24BXBR
1762-L40AWA, 1762-L40BWA, 1762-L40BXB,
1762-L40AWAR, 1762-L40BWAR, 1762-L40BXBR

12 MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
Controller Spacing
The controller mounts horizontally, with the expansion I/O extending to the right of the
controller. Allow 50 mm (2 in.) of space on all but the right side for adequate ventilation, as
shown below.
DIN Rail Mounting
The maximum extension of the latch is 14 mm (0.55 in.) in the open position. A flat-blade
screwdriver is required for removal of the controller. The controller can be mounted to
EN50022-35x7.5 or EN50022-35x15 DIN rails. DIN rail mounting dimensions are shown
below.
Top
Side
Bottom
A
B
C

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To install your controller on the DIN rail:
1. Mount your DIN rail. (Make sure that the placement of the controller on the DIN rail
meets the recommended spacing requirements, see Controller Spacing on page 12.
Refer to the mounting template inside the back cover of this document.)
2. Close the DIN latch, if it is open.
3. Hook the top slot over the DIN rail.
4. While pressing the controller down against the top of the rail, snap the bottom of the
controller into position.
5. Leave the protective debris strip attached until you are finished wiring the controller
and any other devices.
To remove your controller from the DIN rail:
1. Place a flat-blade screwdriver in the DIN rail latch at the bottom of the controller.
2. Holding the controller, pry downward on the latch until the latch locks in the open
position.
3. Repeat steps 1 and 2 for the second DIN rail latch.
4. Unhook the top of the DIN rail slot from the rail.
Dimension Height
A 90 mm (3.5 in.)
B 27.5 mm (1.08 in.)
C 27.5 mm (1.08 in.)
open closed

14 MicroLogix 1200 Programmable Controllers
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Panel Mounting
Mount to panel using #8 or M4 screws. To install your controller using mounting screws:
1. Remove the mounting template from inside the back cover of this document.
2. Secure the template to the mounting surface. (Make sure your controller is spaced
properly. See Controller Spacing on page 12.)
3. Drill holes through the template.
4. Remove the mounting template.
5. Mount the controller.
6. Leave the protective debris strip
in place until you are finished
wiring the controller and any
other devices.
Connec ting 1762 I/O Expansion Module s
Connect 1762 I/O after mounting the controller. Remove the expansion port cover to install
expansion I/O modules. Plug the ribbon cable connector into the bus connector. Replace the
cover as shown below.
ATTENTION
Remove power to the system before installing expansion I/O
or damage to the controller may result.
Mounting
Template

MicroLogix 1200 Programmable Controllers 15
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For detailed information on using expansion I/O, refer to the installation instructions for
your expansion module.
Wiring the Controller
Terminal Block Layouts
IMPORTANT
Ensure that your system power supply is sufficient to support
the number of I/O modules you are installing in the system. A
system loading worksheet is provided in the MicroLogix 1200
Programmable Controllers User Manual, publication
1762-UM001.
TIP
The shading in the following terminal block illustrations
indicates which terminals are tied to which commons.
VAC
L1
VAC
NEUT
VAC
DC 0
VAC
DC 1
VAC
DC 2
OUT 3 VAC
DC 4
OUT 4 OUT 7 OUT 9
OUT 0 OUT 1 OUT 2 VAC
DC 3
OUT 5 OUT 6 OUT 8
IN 0 IN 2 IN 5 IN 7 IN 9
COM
1IN 11 IN 13
NC
COM
0IN 1 IN 3 IN 4 IN 6 IN 8 IN 10 IN 12
NC
1762-L24AWA,
1762-L24AWAR
VAC
L1
VAC
NEUT
VAC
DC 0
OUT 0
VAC
DC 1
OUT 1
VAC
DC 2
OUT 2 VAC
DC 3
OUT 3 VAC
DC 4
OUT 4
OUT 5 OUT 6
OUT 7
OUT 8
OUT 9
+24
VDC
24
COM
IN 0 IN 2 IN 5 IN 7 IN 9
COM
1
IN 11 IN 13
COM
0
IN 1 IN 3 IN 4 IN 6 IN 8 IN 10 IN 12
1762-L24BWA,
1762-L24BWAR

16 MicroLogix 1200 Programmable Controllers
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+24
VDC
VDC
NEUT
OUT
0
OUT
1
OUT
2
OUT
4
OUT
6
VAC
DC 3
OUT
8
IN 0 IN 2 IN 5 IN 7 IN 9
COM
1IN 11 IN 13
NC
COM
0IN 1 IN 3 IN 4 IN 6 IN 8 IN 10 IN 12
NC
VAC
DC 0
VAC
DC 1
VDC
2
OUT
3
OUT
5
OUT
7
OUT
9
COM
2
1762-L24BXB,
1762-L24BXBR
OUT
11
VAC
DC 4
OUT
15
VAC
L1
OUT
0
OUT
1
OUT
2
VAC
DC 3
OUT
7
OUT
5
OUT
8
OUT
13
OUT
10
VAC
DC 5
NC
IN 0 IN 2 IN 5 IN 7 IN 8
COM
1IN 10 IN 12 IN 14 IN 16 IN 18 IN 20 IN 22
COM
0IN 1 IN 3 IN 4 IN 6 IN 9 IN 11 IN 13 IN 15 IN 17 IN 19 IN 21 IN 23
COM
2
NC
VAC
NEUT
VAC
DC 0
VAC
DC 1
VAC
DC 2
OUT
3
OUT
4
OUT
6
OUT
9
OUT
14
OUT
12
1762-L40AWA,
1762-L40AWAR
OUT
11
VAC
DC 4
VAC
NEUT
VAC
DC 0
VAC
DC 1
VAC
DC 2
OUT
3
OUT
46
OUT OUT
9
OUT
14
OUT
12
OUT
15
VAC
L1
OUT
0
OUT
1
OUT
2
VAC
DC 3
OUT
7
OUT
5
OUT
8
OUT
13
OUT
10
VAC
DC 5
+24
VDC
COM
0IN 1 IN 3 IN 4 IN 6 IN 9 IN 11 IN 13 IN 15 IN 17 IN 19 IN 21
COM
2IN 23
24
COM
IN 0 IN 2 IN 5 IN 7 IN 8
COM
1IN 10 IN 12 IN 14 IN 16 IN 18 IN 20 IN 22
1762-L40BWA,
1762-L40BWAR
OUT
11
OUT
9
VDC
NEUT
VAC
DC 0
VAC
DC 1
VDC
2
OUT
3
OUT
5
OUT
7
VAC
DC 3
OUT
14
OUT
12
OUT
15
+24
VDC
OUT
0
OUT
1
OUT
2
OUT
4
OUT
8
OUT
6
COM
2
OUT
13
OUT
10
VAC
DC 4
NC
NC
COM
0IN 1 IN 3 IN 4 IN 6 IN 9 IN 11 IN 13 IN 15 IN 17 IN 19 IN 21
COM
2IN 23
IN 0 IN 2 IN 5 IN 7 IN 8
COM
1IN 10 IN 12 IN 14 IN 16 IN 18 IN 20 IN 22
1762-L40BXB,
1762-L40BXBR

MicroLogix 1200 Programmable Controllers 17
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Wire Requirements
Wiring Recommendation
When wiring without spade lugs, keep the finger-safe covers in place. Loosen the terminal
screw and route the wires through the opening in the finger-safe cover. Tighten the terminal
screw, making sure the pressure plate secures the wire.
Wire Type Wire Size (2 wire maximum per terminal screw)
Solid Cu-90°C (194°F) #14 to #22 AWG
Stranded Cu-90°C (194°F) #16 to #22 AWG
Wiring torque = 0.791 Nm (7 in-lb) rated
ATTENTION
Be careful when stripping wires. Wire fragments that fall into
the controller could cause damage. Once wiring is complete,
be sure the controller is free of all metal fragments before
removing the protective debris strip. Failure to remove the
strip before operating can cause overheating.
Finger-safe cover

18 MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
Spade Lug Recommendation
The diameter of the terminal screw head is 5.5 mm (0.220 in.). The input and output
terminals of the MicroLogix 1200 controller are designed for the following spade lugs. The
terminals will accept a 6.35mm (0.25 in.) wide spade (standard for #6 screw for up to 14
AWG) or a 4 mm (metric #4) fork terminal.
When using spade lugs, use a small, flat-blade screwdriver to pry the finger-safe cover from
the terminal blocks. Then loosen the terminal screw.
TIP
If you wire the terminal block with the finger-safe cover
removed, you may not be able to put it back on the terminal
block if the wires are in the way.
Finger-safe cover

MicroLogix 1200 Programmable Controllers 19
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Surge Suppression
ATTENTION
Inductive load devices such as motor starters and solenoids
require the use of some type of surge suppression to protect
the controller output. Switching inductive loads without surge
suppression can significantly reduce the life of relay contacts
or damage transistor outputs. By using suppression, you also
reduce the effects of voltage transients caused by interrupting
the current to that inductive device, and prevent electrical
noise from radiating into system wiring. Refer to the
MicroLogix 1200 Programmable Controller User Manual,
publication 1762-UM001, for more information on surge
suppression.

20 MicroLogix 1200 Programmable Controllers
Publication 1762-IN006C-EN-P - September 2009
Grounding the Controller
In solid-state control systems, grounding and wire routing helps limit the effects of noise due
to electromagnetic interference (EMI). Run the ground connection from the ground screw of
the controller to the ground bus prior to connecting any devices. Use AWG #14 wire. For
AC-powered controllers, this connection must be made for safety purposes.
You must also provide an acceptable grounding path for each device in your application. For
more information on proper grounding guidelines, refer to the Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
ATTENTION
All devices connected to the RS-232 channel must be
referenced to controller ground, or be floating (not referenced
to a potential other than ground). Failure to follow this
procedure may result in property damage or personal injury.
xFor 1762-L24BWA, 1762-L40BWA, 1762-L24BWAR and
1762-L40BWAR controllers:
The COM of the sensor supply is also connected to chassis
ground internally. The 24V dc sensor power source
should not be used to power output circuits. It should
only be used to power input devices.
xFor 1762-L24BXB, 1762-L40BXB, 1762-L24BXBR and
1762-L40BXBR controllers:
The VDC NEUT or common terminal of the power supply
is also connected to chassis ground internally.