Before you begin, Calculate power supply requirements – Rockwell Automation 1771-IBN DC (10-30V) INPUT Module Installation Instructions User Manual

Page 6

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6 DC (10...30V) Input Module

Publication 1771-IN028D-EN-P - October 2008

Before You Begin

The 1771-IBN series C DC input module is a sink input and requires a source output. A sink
input provides a path to ground and a source output provides a positive voltage path.

You must use this module in a 1771-A1B through 1771-A4B or later 1771 I/O chassis. Refer
to the table for processor compatibility.

Do not place this module in the same I/O chassis as the 1771-IX thermocouple module. You
can use this module in the same chassis as the 1771-IXE thermocouple module.

This module has input filtering to limit the effect of voltage transients caused by contact
bounce and/or electrical noise. Specifications for input filtering are listed in the specifications
section of this document.

Calculate Power Supply Requirements

Your module receives its power for internal logic circuitry through the 1771 I/O chassis
backplane from the chassis power supply. The module requires 280 mA from the output of
this supply.

To calculate the requirements for the backplane power supply, add 280 mA to the power
requirements of all other modules in the I/O chassis. Calculating the requirements prevents
an overload to the chassis backplane and/or backplane power supply.

Processor Capability

System Type

Use with Processors

Cat. No.

Local

Mini-PLC-2/02
Mini-PLC-2/16
Mini-PLC-2/17
PLC-5/15, series B and later

1772-LZ, 1772-LZP
1772-LX, 1772-LXP
1772-LW, 1772-LWP
1785-LT

Remote with a
1771-ASB
remote I/O
adapter

PLC2/20
PLC-2/30
PLC-3
PLC-3/10
PLC-5/15, series B and later

1772-LP2
1772-LP3
1775-L1, 1775-L2, 1775-L3, 1775-L4
1775-LP4, LP8
1785-LT

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