Rockwell Automation 1771-IMD User Manual
Installation Instructions
AC/DC (220V) Input Module
Cat. No. 1771IMD Series B
To The Installer
Preinstallation
Considerations
This document provides information on:
• important pre-installation considerations
• power supply requirements
• initial handling
• installing the module
• using the indicators for troubleshooting
• module specifications
This module must be used with a 1771 B Series I/O chassis. If you
are using a 1771-ASB remote I/O adapter you may use any
combination of I/O modules. Otherwise, make sure no other input
module or single card block transfer module is placed in the same
I/O group.
This module contains input filtering to limit the effects of voltage
transients caused by contact bounce and/or radiated electrical noise.
The delay due to filtering is listed in the Specifications section.
European Union Directive Compliance
If this product has the CE mark it is approved for installation within
the European Union and EEA regions. It has been designed and
tested to meet the following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and the following standards,
in whole or in part, documented in a technical construction file:
• EN 50081-2EMC – Generic Emission Standard, Part 2 –
Industrial Environment
• EN 50082-2EMC – Generic Immunity Standard, Part 2 –
Industrial Environment
This product is intended for use in an industrial environment.
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AC/DC (220V) Input Module Cat. No. 1771-IMD Series B
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC
Low Voltage, by applying the safety requirements of EN 61131–2
Programmable Controllers, Part 2 – Equipment Requirements and
Tests.
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
• Industrial Automation Wiring and Grounding Guidelines For
Noise Immunity, publication 1770-4.1
• Guidelines for Handling Lithium Batteries, publication AG-5.4
• Automation Systems Catalog, publication B111
Power Requirements
Initial Handling
Your module receives its power through the 1771 I/O chassis
backplane from the chassis power supply. The module requires
250mA from the output of this supply. Add this to the requirements
of all other modules in the I/O chassis to prevent overloading the
chassis backplane and/or chassis power supply.
The ac input module is shipped in a static-shielded bag to guard
against electrostatic discharge damage. Observe the following
precautions when handling the module.
ATTENTION: This module is equipped with a
plastic cover that is unique to assembly numbers
!
960378-02 through 960378-09. (This part number is
located near the backplane edge connector pins on the
component-side of the circuit board.) Do not use this
plastic cover on any other module.
Electrostatic Discharge Damage
ATTENTION: Under some conditions, electrostatic
discharge can degrade performance or damage the
!
module. Observe the following precautions to guard
against electrostatic damage.
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• Wear an approved wrist strap grounding device, or touch a
grounded object to discharge yourself before handling the
module.
• Do not touch the backplane connector or connector pins.
• If you configure or replace internal components, do not touch
other circuit components inside the module. If available, use a
static-free work station.
• When not in use, keep the module in a static-shielded bag.
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AC/DC (220V) Input Module Cat. No. 1771-IMD Series B
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Installing Your Module
In this section we tell you how to set the fault mode selection plug,
key your I/O chassis, install your module and make your wiring
connections.
Fault Mode Selection
You may select one of two input-failure configurations (last state or
reset) by positioning a configuration plug on the top edge of the
printed circuit board. This configuration plug is independent of the
last state switch on the I/O chassis backplane during a module fault.
During a chassis fault, the I/O chassis backplane last state switch
setting overrides the module fault mode selection plug.
To set the fault mode selection, proceed as follows:
1. Locate the fault mode selection plug at the top edge of the
module circuit board.
Top edge of circuit board
Fault Mode Selection Plug
(shown in last state position)
RESET LS
10548I
2. Using your finger, slide the plug off the 2 posts.
3. Carefully position the plug on 2 of the 3 posts that correspond to
your requirement.
Keying Your I/O Chassis
Use the plastic keying bands, shipped with each I/O chassis, to key
the I/O slots to accept only this type of module.
The module circuit board is slotted in two places on the rear edge.
The position of the keying bands on the backplane connector must
correspond to these slots to allow insertion of the module. You can
key any connector in an I/O chassis to receive this module except for
the left-most connector reserved for adapter or processor modules.
Place keying bands between the following numbers labeled on the
backplane connector:
• Between 2 and 4
• Between 12 and 14
You can change the position of these keys if system redesign and
rewiring makes insertion of a different module necessary.
Publication
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