Allen-Bradley MicroLogix 1762-IF2OF2 User manual

Publication 1762-IN005A-US-P
Installation Instructions
MicroLogix™ Analog Input/Output
Module
(Catalog Number 1762-IF2OF2)
Inside…
For More Information................................................................................2
Description................................................................................................3
Installation ................................................................................................4
Mounting...................................................................................................5
System Assembly......................................................................................7
Field Wiring Connections..........................................................................8
Input Type Selection ................................................................................ 8
Output Type Selection ............................................................................. 8
Wiring ..................................................................................................... 9
I/O Memory Mapping .............................................................................13
Specifications .........................................................................................18
Hazardous Location Considerations .......................................................22
Environnements dangereux ....................................................................23
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2MicroLogix™ Analog Input/Output Module
Publication 1762-IN005A-US-P
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-UM001A-US-P
Installation guide for the MicroLogix
1200 Programmable Controller.
MicroLogix 1200 Programmable
Controllers Installation
Instructions
1762-IN006A-ML-P
Installation guide for the MicroLogix
1200 Memory Module and Real Time
clock.
MicroLogix 1200 Memory
Module and/or Real Time Clock
Installation Instructions
1762-IN001A-US-P
Installation guide for the 1762-IA8
Discrete Input Module
1762-IA8 120V ac Input Module
Installation Instructions
1762-IN002A-US-P
Installation guide for the 1762-OW8
Discrete Output Module
1762-OW8 Relay Output
Module Installation Instructions
1762-IN003A-US-P
Installation guide for the 1762-IQ8
Discrete Input Module
1762-IQ8 DC Input Module
Installation Instructions
1762-IN004A-US-P
More information on proper wiring and
grounding techniques.
Industrial Automation Wiring
and Grounding Guidelines
1770-4.1

MicroLogix™ Analog Input/Output Module 3
Publication 1762-IN005A-US-P
Description
Item Description
1a upper panel mounting tab
1b lower panel mounting tab
2 power diagnostic LED
3 module door with terminal
identification label
4 bus connector
with male pins
5 bus connector cover
6 flat ribbon cable with bus
connector (female)
7 terminal block
8 DIN rail latch
9 pull loop
10 input type selector switch
1a
1b
2
6
8
1a
1b
5
2
3
9
4
6
7
10
Allen-Bradley HMIs

4MicroLogix™ Analog Input/Output Module
Publication 1762-IN005A-US-P
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
Remove Power
(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.
!
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™ Analog Input/Output Module 5
Publication 1762-IN005A-US-P
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:
!
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.
NOTE 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.
MicroLogix
1200
1762 I/O 1762 I/O 1762 I/O
Side Side
Top
Bottom
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6MicroLogix™ Analog Input/Output Module
Publication 1762-IN005A-US-P
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.
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.
NOTE For environments with extreme vibration and shock concerns,
use the panel mounting method described below, instead of
DIN rail mounting.
End Anchor
End Anchor
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

MicroLogix™Analog Input/Output Module 7
Publication 1762-IN005A-US-P
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.
NOTE 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 6. If DIN rail mounting is used, an end stop must be
installed ahead of the controller and after the last 1762 I/O
module.
Allen-Bradley HMIs

8MicroLogix™Analog Input/Output Module
Publication 1762-IN005A-US-P
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.
Input Type Selection
Select the input type, current or voltage, using the switch located on the module’s
circuit board and the input type/range selection bits in the Configuration Data
File (see page 16). You can access the switch through the ventilation slots on the
top of the module. Switch 1 controls channel 0; switch 2 controls channel 1. The
factory default setting for both switch 1 and switch 2 is Current. Switch positions
are shown below.
Output Type Selection
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 16).
1
ON
2
Current (ON) Default
Voltage (OFF)
Switch 1 = Channel 0
Switch 2 = Channel 1
Switch Location

MicroLogix™Analog Input/Output Module 9
Publication 1762-IN005A-US-P
Wiring
System Wiring Guidelines
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 inputs and 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.
• The 1762-IF2OF2 module does not provide loop power for analog inputs. Use
a power supply that matches the input transmitter specifications.
Terminal Block Layout
!
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.
V out 1
V out 0
IN 1 +
IN 0 +
I out 1
I out 0
IN 1 -
IN 0 -
COM
COM
Commons connected
internally.
Allen-Bradley HMIs

10 MicroLogix™Analog Input/Output Module
Publication 1762-IN005A-US-P
Differential Sensor Transmitter Types
NOTE 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 0.01µF capacitor at one end to block AC power ground
currents, if necessary.
IN 0 (+)
IN 0 (-)
V out 0
V out 1
I out 0
I out 1
COM
IN 1 (-)
IN 1 (+)
COM
Analog Sensor
Analog Load