1771-IAD Allen-Bradley PLC 5 Digital AC/DC Input Module

Product parameters

Basic information:

Manufacturer: Allen-Bradley (Rockwell Automation)

Model: 1771-IAD (Series B, C, D, etc.)

Type: Digital Input Module

Compatible system: PLC-5 series, installed on the 1771 I/O rack

Installation requirements: It can be installed in any slot except the dedicated slots for processors and adapters, and is compatible with 1771-A1B, A2B, A3B, A3B1, A4B, AM1, and AM2 racks (not compatible with 1771-A1, A2, and A4).

Electrical parameters:

Input channels: 16 input points

Input voltage: 79-138V AC (50/60 Hz), 79-138V DC

Backplane current: 195 mA @ 5V DC

Power dissipation: minimum 1.0W, maximum 8.8W

Heat dissipation: minimum 3.42 BTU/ hour, maximum 30.1 BTU/ hour

Input current:

120V AC (60 Hz) : 9.9 mA

120V AC (50 Hz) : 8.7mA

125V DC: 2.56mA

Maximum off-state current: 3.0 mA (AC), 0.8 mA (DC)

Signal delay

AC conduction: 5 ± 3 ms

DC conduction: 3 ± 0.1 ms or 10 ± 1 ms can be selected

AC/DC disconnection: 25 ± 5 ms

Operating temperature: 0°C to 60°C (32°F to 140°F)

Storage temperature: -40°C to 85°C (-40°F to 185°F)

Relative humidity: 5% to 95% (no condensation)

Connection and wiring:

Wiring arm: 1771-WH (Detachable terminal block, facilitating module replacement without disconnecting the wiring)

Key control positions: 10-12 or 14-16 (to prevent incorrect installation)

Power supply requirements: Power is supplied through the backplane of the 1771 I/O rack. It is necessary to ensure that the total current demand with other modules within the rack does not exceed the power supply.

Others:

Indicator lights: 1 green module activity indicator light, 16 red input status indicator lights (illuminated when voltage exists)

Certifications: c-UL, C-TICK, CE

Support for addressing: Supports 1/2 slot, 1 slot and 2 slot I/O addressing

Function

Discrete input processing

It provides 16 input channels, compatible with 120V AC (50/60 Hz) and 125V DC signals, and is suitable for a variety of discrete devices (such as buttons, limit switches, relay contacts, contactors).

Supports mixed AC/DC input, providing flexibility, but does not support 24V DC or 240V AC signals.

Signal delay adjustment

Equipped with an adjustable delay time jumper (suitable for all 16 channels), it can be selected as 5 ms or 20 ms (AC) and 3 ms or 10 ms (DC) to filter out noise and prevent false detection of input signals.

Modular design

It uses the 1771-WH wiring arm, which supports modular wiring, facilitating installation and maintenance. Modules can be replaced without disconnecting the wiring.

Supports RIUP (Live Plug and unplug) function to reduce downtime.

Status monitoring

The front panel is equipped with 1 green module status indicator light and 16 red input status indicator lights, facilitating real-time monitoring of input signals and module operation status.

The input status is transmitted to the processor through the backplane for reading by the PLC program.

System Integration

Compatible with ControlNet, remote I/O and extended local I/O networks, supports master/slave configuration, and is suitable for distributed control systems.

It can be used in conjunction with the 1771-OA output module to drive the input signal through inductors or resistors (such as RG 1676-1 inductors or 2500-ohm resistors).

High performance and reliability

Provide high-performance local I/O processing, suitable for controlling the entire industrial process.

The module design is durable, suitable for industrial environments, and supports multiple I/O types.

Application scenarios

Industrial Automation

It is used to receive discrete input signals, such as buttons, limit switches, indicator lights, motor starters and alarms, and is widely applied in automated production lines, assembly lines and material handling systems.

It is suitable for scenarios that require high reliability and rapid response, such as automotive manufacturing, packaging equipment and food processing.

Distributed control system

In large factories, decentralized sensor and switch signals are integrated into the central PLC-5 controller through remote I/O or ControlNet networks.

Distributed equipment monitoring applicable to the energy, chemical or water treatment industries.

Traditional system maintenance

It is applicable to the old automation systems based on PLC-5, especially when it is necessary to continue using the existing equipment.

It can be used as a transitional module to support migration to modern ControlLogix systems.

General input application:

Its AC/DC compatibility makes it suitable for mixed-signal environments, such as industrial scenarios where both AC and DC inputs need to be processed simultaneously.

General control tasks suitable for medium and low density I/O requirements.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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