Allen-Bradley 1746-IB8 SLC 500 8-Channel 24V DC Input Module

Allen-Bradley 1746-IB8 SLC 500 8-Channel 24V DC Sinking Input Module

Availability: 7 left in stock

DescriptionThe Allen-Bradley 1746-IB8 is a high-performance digital DC input module designed for use within the SLC 500 programmable logic controller...

SKU: 1746-IB8

Manufacturer: Allen-Bradley
Product No.: 1746-IB8
Product Type: Digital Input Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 170g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Allen-Bradley 1746-IB8 is a high-performance digital DC input module designed for use within the SLC 500 programmable logic controller system. This module provides eight (8) current-sinking input channels, allowing the PLC to monitor the status of various field devices such as limit switches, pushbuttons, and proximity sensors. It reliably converts 24V DC field signals into logic-level data for processing by the SLC 500 controller.

Features

Eight (8) isolated current-sinking input channels.
Nominal operating voltage of 24V DC with an operating range of 10-30V DC.
Integrated hardware filtering with an 8 ms signal delay to mitigate mechanical contact bounce.
Robust design offering high noise immunity and resistance to shock up to 30G.
Backplane power consumption of 50 mA at 5V DC.
1500V AC isolation between the backplane and the input circuitry.

Applications

The 1746-IB8 is widely utilized in industrial automation environments for discrete signal monitoring. It is commonly deployed in manufacturing lines, material handling systems, and process control applications where reliable detection of binary field device states is required.

Technical Specifications

Brand	Allen-Bradley
Product Line	SLC 500
Module Type	Digital DC Input Module
Number of Inputs	8 (Current Sinking)
Nominal Input Voltage	24V DC
Operating Voltage Range	10–30V DC
Off-State Voltage (Max)	5.0V DC
Off-State Current (Max)	1 mA
Nominal Input Current	8 mA @ 24V DC
Backplane Current (5V DC)	50 mA
Power Dissipation	1.3 Watts Total
Isolation	1500V AC
Operating Temperature	0 to 60 degC

Installation Guidelines

Ensure the PLC chassis is powered down before inserting or removing the module to prevent electrical damage.
The 1746-IB8 must be installed in an SLC 500 chassis; ensure the module is fully seated and the retaining screws are tightened to provide a secure ground connection.
Use shielded cabling for input signals to minimize electromagnetic interference (EMI) in high-noise environments.
Maintain proper ventilation within the enclosure to ensure the ambient temperature remains within the 0 to 60 degC operating range.
Verify that field devices are correctly wired for a sinking configuration, where the device sources current to the module input.

FAQ

What is the primary function of the 1746-IB8 module?

The 1746-IB8 is a digital input module that detects 24V DC signals from field sensors and switches, converting them into digital signals that the SLC 500 processor can interpret.

Does this module require external power for the inputs?

Yes, the 1746-IB8 requires an external 24V DC power supply to energize the input field devices, as the module itself does not provide power to the sensors.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.