Allen Bradley Output Modules 1771-OMD/B

1771-OMD/B module

1771-OMD/B module must be used with a 1771 Series B I/O chassis.

If you are using a 1/2-slot or 1-slot addressing you may use any combination of I/O modules.

Otherwise, make sure no other output module or single card block transfer module is placed in the same I/O group.

European Union Directive Compliance

If this product is installed within the European Union or EEA

regions and has the CE mark, the following regulations apply.

EMC Directive

This apparatus is tested to meet Council Directive 89/336/EEC Electromagnetic Compatibility (EMC) using a technical construction file and the following standards, in whole or in part:

• EN 50081-2 EMC – Generic Emission Standard, Part 2 – Industrial Environment

• EN 50082-2 EMC – Generic Immunity Standard, Part 2 – Industrial Environment

The product described in this manual is intended for use in an industrial environment.

Low Voltage Directive

This apparatus is also designed 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 that the above norm requires, see the appropriate sections in this manual, 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

Open style devices must be provided with environmental and safety protection by proper mounting in enclosures designed for specific application conditions. See NEMA Standards publication 250 and

IEC publication 529, as applicable, for explanations of the degrees of protection provided by different types of enclosure.

Power Requirements

Your module receives its power through 1771 I/O chassis backplane from the chassis power supply. The module requires 700mA 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.

Initial Handling

The ac output module is shipped in a static-shielded bag to guard against electrostatic discharge damage. Observe the following precautions when handling the module.

Install your 1771-OMD/B module

In this section, we tell you how to set the module fault mode, key your I/O chassis, install your module and make your wiring connections.

Setting the 1771-OMD/B Module Fault Mode

You may select one of two output-failure configurations (last state or reset) by positioning a selection jumper on the bottom edge of the printed circuit board.

The setting of this selection jumper determines how the module presents its outputs in the event of an internal module fault.

With processor-to-I/O module communication faults, the position of the last state switch on the I/O chassis backplane controls the outputs.

Key Your 1771-OMD/B module 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 the 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 6 and 8

You can change the position of these keys if system redesign and rewiring makes insertion of a different module necessary

Installing the Output 1771-OMD/B module

To install the ac output module in your 1771 I/O chassis, follow the steps listed below.

Important

You can use an AC (220V) Output Module (cat. no. 1771-OMD) to directly drive terminals on an AC/DC (220V) Input Module (cat. no. 1771-IMD).

You can also use a 1771-OMD Output module to drive an AC/DC (220V) Input Module (cat. no. 1771-IM) but you must connect a 10K ohm, 10W resistor between the output terminal and L2 (common) as shown below.

Use the same ac power source to power both modules to ensure proper phasing and prevent module damage.

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