Allen-Bradley MicroLogix 1200 User manual

Publication 1762-IN016B-EN-P - December 2005
Installation Instructions
MicroLogix 1200 Analog Output Module
Catalog Number 1762-OF4
Inside...
For See Page
Important User Information 2
Before Installation 3
Prevent Electrostatic Discharge 3
Remove Power 4
Hazardous Location Considerations 4
Environnements dangereux 5
About the Analog Output Module 6
Install the Analog Output Module 7
Mount the Module on a DIN Rail 7
Mount the Module on a Panel 8
Wire the Analog Output Module 9
Ground the Module 10
System Assembly 12
I/O Memory Mapping 13
Input Data File 13
Output Data File 14
Configuration Data File 14
Specifications 17
Additional Resources 19

2MicroLogix 1200 Analog Output Module
Publication 1762-IN016B-EN-P - December 2005
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.rockwellautomation.com/literature 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, when necessary, 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 identify a hazard,
avoid a hazard and recognize the consequences.
SHOCK HAZARD
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that dangerous voltage may be present.
BURN HAZARD
Labels may be located on or inside the equipment (e.g., drive or motor) to alert people
that surfaces may be dangerous temperatures.

MicroLogix 1200 Analog Output Module 3
Publication 1762-IN016B-EN-P - December 2005
Before 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)
Prevent Electrostatic Discharge
(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 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.

4MicroLogix 1200 Analog Output Module
Publication 1762-IN016B-EN-P - December 2005
Remove Power
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.
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, or
•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.
WARNING 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.
•Do not connect or disconnect components unless power has
been switched off.
•This product must be installed in an enclosure.
•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 7. If DIN rail mounting is used, an end stop must be
installed ahead of the controller and after the last 1762 I/O
module.
•All wiring must comply with N.E.C. article 501-4(b).

MicroLogix 1200 Analog Output Module 5
Publication 1762-IN016B-EN-P - December 2005
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.
WARNING 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.
•Ne pas connecter ou déconnecter des composants sans s'être
assuré que l'alimentation est coupée.
•Ce produit doit être installé dans une armoire.
•Pour les applications de Classe I, Division 2, le connecteur de
bus doit être correctement installé et son couvercle
enclenché.
•Pour les applications de Classe 1, Division 2, tous les modules
doivent être installés en contact direct les uns avec les autres,
comme indiqué page 7. Si on utilise le montage sur rail DIN,
une butée doit être placée à l'avant de l'automate et après la
dernière unité d'E/S 1762.

6MicroLogix 1200 Analog Output Module
Publication 1762-IN016B-EN-P - December 2005
About the Analog Output Module
Figure 1 Product Description
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
1a
1b
5
2
3
9
4
6
7
1a
1b
2
6
8

MicroLogix 1200 Analog Output Module 7
Publication 1762-IN016B-EN-P - December 2005
Install the Analog Output Module
Maintain spacing from enclosure walls, wireways and adjacent equipment. Allow
50.8 mm (2 in.) of space on all sides for adequate ventilation, as shown:
Figure 2 Module Spacing
Mount the Module on a DIN Rail
The module can be mounted using the following DIN rails: 35 x 7.5 mm
(1.38 x 0.30 in.) (EN 50 022 - 35 x 7.5)
or 35 x 15 mm (1.38 x 0.60 in.) (EN 50 022 - 35 x 15).
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 is only mounted horizontally.
ATTENTION During panel or DIN rail mounting of all devices, be sure that all
debris (for example, metal chips and wire strands) 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 1762 I/O 1762 I/O

8MicroLogix 1200 Analog Output Module
Publication 1762-IN016B-EN-P - December 2005
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.
Use DIN rail end anchors (Allen-Bradley part number 1492-EA35 or 1492-EAH35)
for environments with vibration or shock concerns.
Figure 3 DIN Rail Mount
Mount the Module on a Panel
Use the dimensional template 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
End Anchor

MicroLogix 1200 Analog Output Module 9
Publication 1762-IN016B-EN-P - December 2005
Figure 4 Dimensional Template
Wire the Analog Output Module
The output type selection, current or voltage, is made by wiring to the appropriate
terminals, Iout or Vout, and by the type/range selection bits in the Configuration
Data File (see page 14).
Consider the following when wiring your system:
•The analog common (COM) is not connected to earth ground inside the
module. All terminals are electrically isolated from the system.
•Channels are not isolated from each other.
•Use Belden 8761, or equivalent, shielded wire.
•Under normal conditions, the drain wire (shield) should be connected to the
metal mounting panel (earth ground). Keep shield connection to earth
ground as short as possible.
•To ensure optimum accuracy for voltage type outputs, limit overall cable
impedance by keeping all analog cables as short as possible. Locate the I/O
system as close to your voltage type sensors or actuators as possible.
ATTENTION Analog outputs may fluctuate for less than a second when power
is applied or removed. This characteristic is common to most
analog outputs. While the majority of loads will not recognize this
short signal, it is recommended that preventive measures be taken
to ensure that connected equipment is not affected.
90
(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

10 MicroLogix 1200 Analog Output Module
Publication 1762-IN016B-EN-P - December 2005
Figure 5 Terminal Block Layout
Figure 6 Differential Sensor Transmitter Types
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.
Ground 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
TIP Grounding the cable shield at the module end only usually
provides sufficient noise immunity. However, for best cable shield
performance, earth ground the shield at both ends, using a 0.01
µF capacitor at one end to block AC power ground currents, if
necessary.
V out 3
V out 2
V out 1
V out 0
I out 3
I out 2
I out 1
I out 0
COM
COM Commons connected
internally.
I out 0
I out 1
V out 2
V out 3
V out 0
V out 1
COM
I out 3
I out 2
COM
Current Load
Voltage Load