Allen-Bradley 1771-IL User manual

Publication 1771Ć5.62 - November 1998
Isolated Analog Input Module
(Catalog Number 1771-IL Series D)
Use this document as a guide when installing the catalog number
1771-IL/D analog input module.
To See page
Prevent Electrostatic Discharge Below
nderstand Compliance to European nion Directives 2
nderstand Product Compatibility 3
Calculate Power Requirements 3
Determine Module Placement 3
Set the Configuration Jumpers 4
Key the Backplane Connector 4
Install the Module and Field Wiring Arm 5
Connect Wiring to the Field Wiring Arm 6
Ground the Chassis and Module 7
Configure the Module 8
For this reference information See page
Status Indicators 10
Troubleshooting 11
CSA Hazardous Information 12
Specifications 13
The isolated analog input module is sensitive to electrostatic
discharge. This module is shipped in static-shielded packaging to
guard against electrostatic discharge damage. Observe the following
precautions when handling this module.
!
ATTENTION: Electrostatic discharge can damage
integrated circuits or semiconductors if you touch
backplane 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 backplane 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 original
static-shielded packaging
This icon is used when
additional information is
available in the Isolated Analog
Input Module User Manual,
publication 1771Ć6.5.128.
Installation Instructions
Contents
Prevent Electrostatic
Discharge
Allen-Bradley 1771-IL

Isolated Analog Input Module 3
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The 1771-IL/D module can be used with any 1771 I/O chassis.
Compatibility and data table use is listed below.
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Do not use this module with Cat. No. 1771-AL adapter, PLC-2/20 or
2/30 programmable controllers.
The module receives its power through the 1771 I/O power supply
and requires 1.1A at 5V (5.5 Watts) from the backplane.
Add this current to the requirements of all other modules in the I/O
chassis to prevent overloading the chassis backplane and/or
backplane power supply.
You can place your module in any I/O module slot of the I/O chassis
except for the extreme left slot. This slot is reserved for PC
processors or adapter modules.
!
ATTENTION: Do not insert or remove modules from
the I/O chassis while system power is ON. Failure to
observe this rule could result in damage to module
circuitry.
Group your modules to minimize adverse affects from radiated
electrical noise and heat. We recommend the following.
•Group analog input and low voltage dc modules away from ac
modules or high voltage dc modules to minimize electrical noise
interference.
•Do not place this module in the same I/O group with a discrete
high-density I/O module when using 2-slot addressing. This
module uses a byte in both the input and output image tables for
block transfer.
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Isolated Analog Input Module6
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Connect your I/O devices to the field wiring arm (cat. no. 1771-WF)
shipped with the module.
!
ATTENTION: Remove power from the 1771 I/O
chassis backplane and field wiring arm before
removing or installing an I/O module.
•Failure to remove power from the backplane or
wiring arm could cause module damage, degradation
of performance, or injury.
•Failure to remove power from the backplane could
cause injury or equipment damage due to possible
unexpected operation.
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Allen-Bradley 1771-IL

Isolated Analog Input Module 13
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Allen-Bradley 1771-IL

Isolated Analog Input Module 15
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The following are major differences between series levels of the
1771-IL isolated analog input module.
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