Allen Bradley 1746-IB8

Rayon Automation Technology Co., Ltd. As a supplier, we offer Allen Bradley 1746-IB8 in stock, which is specifically designed to handle 24V DC discrete signals. It can accurately transmit the signals from field sensors, limit switches and buttons to the PLC processor.

The Allen Bradley 1746-IB8 features an internal RC filtering network, with an inherent signal delay of approximately 8ms. It enables 1500V AC photoelectric isolation between the field side and the PLC backplane. In terms of space and energy consumption, a single module provides 8 input channels, is compact and effectively saves rack slots, and has extremely low backplane power consumption (5V DC only requires 50mA). It allows for mounting more modules on a single rack without the need for power supply upgrades. The front panel is equipped with corresponding status LED indicators, making on-site debugging and fault troubleshooting clear and straightforward, ensuring the safety of the core system.

The Allen Bradley 1746-IB8 is used in food processing, automotive assembly, water treatment, and various packaging machinery. As a model of the SLC 500 system, it is responsible for capturing the 24V DC status signals of limit switches, photoelectric sensors, proximity switches, and operation buttons in real time. It is the core input component for achieving automatic logic control and safety monitoring of equipment.

Does it support sinking (sinking type) and sourcing (sourcing type) connection methods?
A: Yes. It is a bipolar input module. Users can configure it flexibly according to the on-site wiring requirements.

Q2: The LED indicator light at the front of the module is not illuminated. What does this usually indicate?
A: First, check if the power supply of the module backplane is normal. If a single indicator light is not illuminated, please check if the 24V DC wiring on site is loose or if the external sensor is damaged.

Q3: Can this module be hot-swapped while in operation?
A: No. Before removing or installing the Allen Bradley 1746-IB8, the power supply of the SLC 500 rack must be turned off to prevent damage to the module's electronic components or causing a backplane failure.