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PRODUCT PROFILE

ALLEN-BRADLEY · INDUSTRIAL CONTROL

ALLEN-BRADLEY

1771-IG

8-Point TTL Input Module

SYSTEM CONTEXT

PLC-5 1771 I/O Platform

Receives low-voltage TTL-level discrete signals for PLC input processing.

PRODUCT OVERVIEW

Chassis-mounted TTL input module for established PLC-5 systems. Match the logic convention, field supply, wiring arm and chassis keying before replacement.

CONDITION

New Original

WARRANTY

One year

DIRECT CALL

+86 17359287459

sales9@apterpower.com

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COMMUNICATION & APPLICATIONS

SYSTEM PLANNING

Communication & Connectivity

Application Scenarios

BACKPLANE EXCHANGE

Transfers eight discrete input states through the 1771 chassis backplane.

LOGIC INTERFACING

Connection of compatible encoders, counters and TTL electronic equipment.

TTL FIELD SIGNALS

Accepts low-voltage logic signals using selectable high-true or low-true operation.

LEGACY MACHINE I/O

Maintenance of PLC-5 controlled production and handling machinery.

WIRING PRACTICE

Use the documented field wiring arm, shield treatment and cabinet grounding.

PANEL RESTORATION

Exact module replacement during scheduled cabinet refurbishment.

Technical data

INPUT CAPACITY

8 points

HIGH-TRUE ON LEVEL

2.4VDC to 5.25VDC

LOW-TRUE ON LEVEL

-0.2VDC to +0.8VDC

INPUT DELAY

Less than 1ms

BACKPLANE CURRENT

122mA maximum

ISOLATION TEST

1500VAC RMS

BRAND & APPLICATIONS

PRODUCT REFERENCES

Brand characteristics

Application fields

PLC-5 architecture

Allen-Bradley 1771 modules provide modular I/O for established PLC-5 systems.

Packaging machinery

Fast logic inputs from counters and electronic machine sensors.

Field indication

Channel status indicators support cabinet checks and commissioning.

Material handling

Discrete status collection in conveyors and sorting equipment.

Logic flexibility

Selectable logic convention accommodates documented TTL signal schemes.

Test equipment

TTL-level signal acquisition in industrial test stations.

Service continuity

Catalog-specific wiring and keying preserve installed cabinet design.

Legacy controls

Service replacement for long-running PLC-5 installations.

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SERVICE & POLICY

QUOTATION SUPPORT

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Confirm mating connectors, cable assignments, controller configuration, diagnostic history and the condition of adjacent hardware before replacement planning.

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State the delivery destination, required date and preferred transport method. Availability, condition, warranty, lead time, protective packing and shipping terms will be checked before quotation.

IDENTIFICATION PURPOSE

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1771-IG

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8 Point Input Module

1771 TTL Module

5V DC Input

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