1756-OX8I Product datasheet   

1756-OX8I Functional Description

The 1756-OX8I Isolated Contact Module is an Allen-Bradley relay output module designed for use with the ControlLogix platform, providing reliable and flexible output solutions for industrial automation systems. This module features eight Normally Open (N.O.) contacts and eight Normally Closed (N.C.) contacts, all of which are individually isolated, offering users enhanced control over a variety of output devices.

With its ability to handle both AC and DC voltages, the 1756-OX8I Isolated Contact Module is highly versatile. It supports an AC voltage range of 10 to 240 VAC and a DC voltage range of 5 to 125 VDC. This flexibility allows the module to energize various types of output devices such as contactors, motor starters, variable frequency drives, pilot lamps, annunciator panels, and other equipment requiring different voltage categories.

One of the key features of the 1756-OX8I Isolated Contact Module is its modularity. The output channels are individually isolated, but the module can also be configured as a non-isolated relay output by simply shorting the L1 connections on the Removable Terminal Block (RTB) using a 1756-JMPR jumper or third-party conductor. Compatible RTBs, such as the 1756-TBCH and 1756-TBS6H, are separately purchased. These RTBs simplify module installation, troubleshooting, and replacement by eliminating the need for re-wiring or output signal termination.

The 1756-OX8I Isolated Contact Module is engineered for durability with a maximum initial contact resistance of 100 mΩ at 6V, 1A, and a contact life expectancy of 300,000 cycles for resistive loads and 100,000 cycles for inductive loads. The module features a switching frequency of 1 operation per 3 seconds (0.3 Hz at rated load) and a mean bounce time of just 1.2 ms, ensuring reliable operation and minimal downtime in demanding industrial environments.

In summary, the 1756-OX8I Isolated Contact Module is a robust and flexible solution for controlling a wide range of devices in industrial automation systems, with features that enhance both performance and ease of use.