Allen Bradley 1746-IB32

Brand: Allen Bradley
Model:1746-IB32

Inventory situation: Goods are available in stock.

Product features

The Allen Bradley 1746-IB32 is a dependable 32-channel digital DC input module for the SLC 500 PLC system, providing strong performance in industrial automation applications. This module, manufactured by Rockwell Automation, is designed to accurately and reliably handle discrete input signals from sensors, switches, and other devices. With a voltage range of 15-30V DC at 50°C (15-26.4V DC at 60°C) and a nominal input current of 5.1 mA at 24V DC, it easily adjusts to a variety of industrial conditions while remaining stable.

Key characteristics include 32 independent input channels organized into four groups of eight, allowing for flexible wiring for varying voltage requirements. Each channel has 1500V AC isolation from the backplane, which protects the system against voltage spikes and ensures long-term stability. The Allen Bradley 1746-IB32 module also has LED status indicators for real-time input condition monitoring, which simplifies troubleshooting and maintenance. The tiny shape (11.4cm × 11.7cm × 9.0cm) optimizes panel area, making it suitable for situations with limited space.

Technically, the 1746-IB32 has fast response times, with a maximum signal delay of 3ms in both ON and OFF phases, ensuring prompt data collecting for crucial activities. It accepts sink-type input configurations and efficiently manages current flow from connected devices. The module's environmental characteristics, which include an operating temperature range of 0-60°C and resistance to vibration (1g at 5-200Hz) and shock (30g), qualify it for tough industrial environments.

Specifications

Input Voltage Range	15-30V DC (at 50°C), 15-26.4V DC (at 60°C)
Response Time	Signal ON / OFF delay of 3ms each
Nominal Input Current	5.1mA @ 24V DC, OFF-state leakage current ≤ 1.5mA
Power Consumption	0.2W per channel (heat dissipation), total power consumption approximately 6.65-6.67W
Operating Temperature	0-60°C
Humidity	5%-95% RH, non-condensing
Signal Filtering	Each channel can select either 1ms or 10ms digital filter
International Certifications	CE, UL Listed, C-UL, CSA, Class I, Groups A/B/C/D, Division 2

Precautions

To install the Allen Bradley 1746-IB32, place it in a control room or enclosed cabinet with a temperature range of 0°C to 60°C, which is excellent for 1746-IB32 operations. Avoid places with high humidity, dust, or vibration, which might damage the Allen Bradley 1746-IB32. To secure the 1746-IB32 module in the SLC 500 rack, use the manufacturer's installation guide. Do not place it in slot 0 (reserved for communication adapters), as this can affect the 1746-IB32 performance. To decrease electromagnetic interference, use shielded cables and adequate grounding, as the Allen Bradley 1746-IB32 contains optical coupling and noise-reducing filter circuitry.

When wiring the Allen Bradley 1746-IB32, ensure that each channel's 2.5A fuse is intact. Incorrect wiring, such as reverse polarity, can activate the 1746-IB32's built-in overvoltage protection. If any 1746-IB32 channel does not show any input, check the voltage, fuse status, and terminal connections for the Allen Bradley 1746-IB32. Regularly inspect the module for loose wires or physical damage, especially in high-vibration areas where the Allen Bradley 1746-IB32 is employed.

When integrating the Allen Bradley 1746-IB32 with a PLC system, make sure it is compatible with the SLC 500 or MicroLogix 1000/1500 series, which both function effortlessly with the 1746-IB32. To avoid communication difficulties with the module, setup the Allen Bradley 1746-IB32 using the correct software version (for example, RSLogix 500). Refer to the Allen Bradley 1746-IB32 troubleshooting guide for issues such as poor data quality or unsuccessful communication that are particular to this module.

FAQ

Q: What is the Allen Bradley 1746-IB32, and what are its primary applications?

A: The Allen Bradley 1746-IB32 is a high-reliability 32-channel DC digital input module designed for the SLC 500 series of programmable logic controllers (PLCs) . It is engineered to interface with industrial devices such as switches, sensors, and auxiliary contacts, converting their binary signals (ON/OFF) into digital inputs for PLC processing. This module is widely used in manufacturing automation, machine control, and process monitoring systems where high-density discrete input capabilities are required .

Q: Can the 1746-IB32 be used in hazardous environments?

A: While the 1746-IB32 is not rated for explosive atmospheres, its marine certifications and rugged design make it suitable for harsh industrial environments (e.g., high humidity, dust, or vibration) . For hazardous areas, consider Rockwell's 1734-IE8XTR modules with intrinsic safety.

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