1756-IA8D Allen Bradley Rockwell ControlLogix Digital I/O Module

Product parameters

Module type: Digital Diagnostic Input Module

Input points: 8, independent Isolated (Individually Isolated)

Voltage category: 120V AC

Working voltage range: 79-132V AC, 47-63 Hz

Input frequency: 50/60 Hz

Input delay time:

From OFF to ON: Maximum 10 ms + filtering time (users can choose 1 ms or 2 ms)

From ON to OFF: Maximum 8 ms + filtering time (users can choose 9 ms or 18 ms)

Closed-state characteristics:

Maximum turn-off voltage: 20V AC

Maximum turn-off current: 2.5 mA

On-state current

Minimum: 5 mA @ 79V AC

Maximum: 16 mA @ 132V AC

Surge current: Peak value of up to 250 mA, decays to below 37% within 22 ms (inactive)

Backplane current

At 5.1V DC: 100 mA

At 24V DC: 3 mA

The total power of the backplane: 0.58W

Maximum power dissipation: 4.5W at 60°C

Heat dissipation: 15.35 BTU/hr at 60°C

Isolation voltage:

Inter-channel isolation: 250V (continuous), reinforced insulation

Channel and backplate isolation: 250V (continuous), reinforced insulation

Diagnostic function:

Open-circuit detection

Power loss detection (configurable within the range of 46-85V)

Fault timestamp (accuracy of 1 ms, based on the ControlLogix system clock)

Status indication: Module status (OK), input/output status LED

Removable terminal block (RTB) : Compatible with 1756-TBCH (36-pin screw terminal) or 1756-TBS6H (36-pin spring terminal)

Slot width: 1 slot

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: 5-95%, non-condensing

Installation method: Rack installation, compatible with ControlLogix racks (1756-A4, A7, A10, A13, A17)

Shell type: Open type (without shell)

Certification standards: CE, CSA, KC, MARINE, NRTL, RCM, UL

Function

Diagnostic function: Supports open circuit, disconnection and power loss detection. The fault status is indicated by LED and generates fault data with timestamp, with an accuracy of 1 ms.

Independent isolation: Each input channel is independently isolated to enhance anti-interference capability and security.

State Change (COS) function: Each channel can be manually configured to trigger state changes, facilitating real-time monitoring of signal changes.

Modular design: Supports hot plugging, compatible with ControlLogix racks, and is convenient for maintenance and expansion.

Producer/Consumer model: Share input states through ControlNet or EtherNet/IP networks to enhance system efficiency.

Application scenarios

Industrial process control

It is used to monitor the switching status of AC power supply equipment, such as relays, contactors, buttons or sensors.

It is applicable to factory automated production lines to detect the operating status or fault signals of equipment.

Electric Power and Energy System

Monitor the status of AC power supply, such as the on-off status of circuit breakers, transformers or other power equipment.

It is suitable for detecting power loss or line faults in distribution systems or power plants.

Manufacturing and Assembly: Integrated into the ControlLogix system, it is used for automation control in industries such as automotive manufacturing, food and beverage, and pharmaceuticals, monitoring AC signal input.

Distributed Control System (DCS) : As a remote I/O module, it communicates with the main controller via ControlNet or EtherNet/IP networks and is suitable for distributed control in large factories or across regions.

Building automation: It is used for the management of HVAC (Heating, Ventilation and Air Conditioning) systems or other facilities, and for monitoring the status of AC-driven equipment.

Safety-critical applications: Combined with diagnostic functions, it is used in scenarios that require highly reliable input detection, such as emergency shutdown signals or fault alarms.

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!!!

Bou L(Sales Manager)            

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