Allen-Bradley MicroLogix 1200 User manual

Publication 1762-IN017B-EN-P - March 2004

Installation Instructions

MicroLogix™ 1200 Isolated Relay Output Module

(Catalog Number 1762-OX6I)

Inside…

For More Information................................................................................2

Description................................................................................................3

Installation ................................................................................................3

Mounting...................................................................................................5

System Assembly......................................................................................7

Field Wiring Connections..........................................................................7

I/O Memory Mapping .............................................................................10

Specifications .........................................................................................11

Hazardous Location Considerations .......................................................15

Environnements dangereux ....................................................................16

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2MicroLogix™ 1200 Isolated Relay Output Module

Publication 1762-IN017B-EN-P - March 2004

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 1.800.963.9548 (USA/Canada)

or 001.330.725.1574 (Outside USA/Canada)

For Refer to this Document Pub. No.

Information on installing, wiring, and operating a

MicroLogix 1200 Programmable Controller

MicroLogix 1200 Programmable

Controllers User Manual

1762-UM001

Installation guide for the MicroLogix 1200

Programmable Controller.

MicroLogix 1200 Programmable

Controllers Installation Instructions

1762-IN006

Installation guide for the MicroLogix 1200 Memory

Module and Real Time clock.

MicroLogix 1200 Memory Module and/or

Real Time Clock Installation Instructions

1762-IN001

In-depth information on the MicroLogix 1200

controllers instruction set

MicroLogix 1200 and MicroLogix 1500

Programmable Controllers Instruction Set

Reference Manual

1762-RM001

More information on proper wiring and grounding

techniques.

Industrial Automation Wiring and

Grounding Guidelines

1770-4.1

MicroLogix™ 1200 Isolated Relay Output Module 3

Publication 1762-IN017B-EN-P - March 2004

Description

Installation

1762 I/O is 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)

Item Description Item Description

1a upper panel mounting tab 5 bus connector cover

1b lower panel mounting tab 6 flat ribbon cable with bus connector (female)

2 power diagnostic LED 7 terminal block

3 module door with terminal identification label 8 DIN rail latch

4 bus connector

with male pins

9 pull loop

(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 OverVoltage Category II are International Electrotechnical Commission (IEC) designations.

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4MicroLogix™ 1200 Isolated Relay Output Module

Publication 1762-IN017B-EN-P - March 2004

Prevent Electrostatic Discharge

Remove Power

ATTENTION

Electrostatic discharge can damage integrated circuits or

semiconductors if you touch bus connector pins. Follow these

guidelines when you handle the module:

•Touch a grounded object to discharge static potential.

•Wear an approved wrist-strap grounding device.

•Do not touch the bus connector or connector pins.

•Do not touch circuit components inside the module.

•If available, use a static-safe work station.

•When not in use, keep the module in its static-shield box.

ATTENTION

Remove power before removing or installing this module. When

you remove or install a module with power applied, an electrical

arc may occur. An electrical arc can cause personal injury or

property damage by:

•sending an erroneous signal to your system’s field devices,

causing unintended machine motion

•causing an explosion in a hazardous environment

•causing permanent damage to the module’s circuitry

Electrical arcing causes excessive wear to contacts on both the

module and its mating connector. Worn contacts may create

electrical resistance.

MicroLogix™ 1200 Isolated Relay Output Module 5

Publication 1762-IN017B-EN-P - March 2004

Mounting

Minimum Spacing

Maintain spacing from

enclosure walls, wireways,

adjacent equipment, etc.

Allow 50.8 mm (2 in.) of

space on all sides for

adequate ventilation, as

shown:

DIN Rail Mounting

The module can be mounted using the following DIN rails: 35 x 7.5 mm

(EN 50 022 - 35 x 7.5) or 35 x 15 mm (EN 50 022 - 35 x 15).

Before mounting the module on a DIN rail, close the DIN rail latch. Press the DIN

rail mounting area of the module against the DIN rail. The latch will momentarily

open and lock into place.

ATTENTION

Do not remove protective debris strip until after the module and

all other equipment near the module is mounted and wiring is

complete. Once wiring is complete and the module is free of

debris, carefully remove protective debris strip. Failure to remove

strip before operating can cause overheating.

TIP 1762 expansion I/O may be mounted horizontally only.

ATTENTION

During panel or DIN rail mounting of all devices, be sure that all

debris (metal chips, wire strands, etc.) is kept from falling into the

module. Debris that falls into the module could cause damage

when power is applied to the module.

Side Side

Top

Bottom

MicroLogix

1200

1762 I/O

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Publication 1762-IN017B-EN-P - March 2004

Use DIN rail end anchors (Allen-Bradley part number 1492-EA35 or 1492-EAH35)

for environments with vibration or shock concerns.

Panel Mounting

Use the dimensional template shown below to mount the module. The preferred

mounting method is to use two M4 or #8 panhead screws per module. M3.5 or #6

panhead screws may also be used, but a washer may be needed to ensure a good

ground contact. Mounting screws are required on every module.

TIP For environments with extreme vibration and shock concerns,

use the panel mounting method described below, instead of DIN

rail mounting.

End Anchor

(3.54)

100

(3.94)

40.4

(1.59)

40.4

(1.59)

14.5

(0.57)

For more than 2 modules: (number of modules - 1) x 40.4 mm (1.59 in.)

NOTE:

Hole spacing tolerance:

±0.4 mm (0.016 in.).

MicroLogix 1200

Expansion I/O

MicroLogix 1200

Expansion I/O

MicroLogix 1200

Expansion I/O

MicroLogix 1200

MicroLogix™ 1200 Isolated Relay Output Module 7

Publication 1762-IN017B-EN-P - March 2004

System Assembly

The expansion I/O module is attached to the controller or another I/O module by

means of a ribbon cable after mounting as shown below.

Field Wiring Connections

Grounding the Module

This product is intended to be mounted to a well-grounded mounting surface such

as a metal panel. Additional grounding connections from the module’s mounting

tabs or DIN rail (if used) are not required unless the mounting surface cannot be

grounded. Refer to Industrial Automation Wiring and Grounding Guidelines,

Allen-Bradley publication 1770-4.1, for additional information.

TIP Use the pull loop on the connector to disconnect modules. Do

not pull on the ribbon cable.

WARNING EXPLOSION HAZARD

•In Class I, Division 2 applications, the bus connector must

be fully seated and the bus connector cover must be

snapped in place.

•In Class I, Division 2 applications, all modules must be

mounted in direct contact with each other as shown on

page 5. If DIN rail mounting is used, an end stop must be

installed ahead of the controller and after the last 1762

I/O module.

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Publication 1762-IN017B-EN-P - March 2004

Output Wiring

Basic wiring(1) of the 1762-OX6I is shown below.

Labeling the Terminals

A write-on label is provided with the module. Mark the identification of each

terminal with permanent ink, and slide the label back into the door.

(1) Surge Suppression – Connecting surge suppressors across your external inductive load will extend the life of therelay

contacts. For additional details, refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.

L1-0

L1-1

L1-2

L1-3

L1-4

L1-5

OUT0 N.C.

OUT0 N.O.

OUT1 N.C.

OUT1 N.O.

OUT2 N.C.

OUT2 N.O.

OUT3 N.O.

OUT3 N.C.

OUT4 N.C.

OUT4 N.O.

OUT5 N.C.

OUT5 N.O.

L1 OR +DC

L2 OR -DC

MicroLogix™ 1200 Isolated Relay Output Module 9

Publication 1762-IN017B-EN-P - March 2004

Wiring the Finger-Safe Terminal Block

When wiring the terminal block, keep the finger-safe cover in place.

1. Route the wire under the terminal pressure plate. You can use the stripped

end of the wire or a spade lug. The terminals will accept a 6.35 mm

(0.25 in.) spade lug.

2. Tighten the terminal screw making sure the pressure plate secures the wire.

Recommended torque when tightening terminal screws is 0.904 Nm (8

in-lbs).

3. After wiring is complete, remove the debris shield.

ATTENTION

Be careful when stripping wires. Wire fragments that fall into a

module could cause damage when power is applied. Once

wiring is complete, ensure the module is free of all metal

fragments.

TIP If you need to remove the finger-safe cover, insert a screw driver

into one of the square wiring holes and gently pry the cover off.

If you wire the terminal block with the finger-safe cover

removed, you will not be able to put it back on the terminal

block because the wires will be in the way.

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10 MicroLogix™ 1200 Isolated Relay Output Module

Publication 1762-IN017B-EN-P - March 2004

Wire Size and Terminal Screw Torque

Each terminal accepts up to two wires with the following restrictions:

I/O Memory Mapping

ddressing

The addressing scheme for 1762-OX6I is shown below.

(1) I/O located on the controller (embedded I/O) is slot 0. I/O added to the controller (expansion I/O) begins with slot 1.

Output Data File

Relay outputs are controlled using the bit positions in Word 0, as follows:

•1 = relay energized (normally-open contact ON)

•0 = relay not energized (normally-closed contact ON)

For each module, the output data file contains the controller-directed state of the

discrete output points. Bit positions 0 through 5 correspond to output points 0

through 5.

w = write only; 0 = always at 0 or OFF state

Wire Type Wire Size Terminal Screw Torque

Solid Cu-90°C (194°F) #14 to #22 AWG 0.904 Nm (8 in-lbs)

Stranded Cu-90°C (194°F) #16 to #22 AWG 0.904 Nm (8 in-lbs)

Word

Bit Position

1514131211109876543210

00000000000wwwwww

O0:x.0/0

Output (O) File

Output Data File (0) Slot Number (1) Word

Bit

Bit Delimiter

Word Delimiter

Slot Delimiter

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