Model PCIe-IDIO-24 Isolated Digital I/O Card Family

The PCI Express series, Model PCIe-IDIO-24, is designed for high-voltage protection in industrial control and monitoring applications. This product features 24 optically isolated digital inputs and 24 solid-state FET relay outputs. The card is an x1 PCI Express device that can be used in any available PCI Express slot.

Optocouplers on the card are rated for 2,500V isolation and help protect systems in industrial environments against high voltages or currents caused by line surges or ground loops. The solid-state outputs are capable of switching from 5 to 34 DC at 2 A continuous.

The PCIe-IDIO-24 offers change of state detection (COS) on all inputs (including TTL lines), which can generate an interrupt whenever one or more of the digital inputs changes state. This eliminates the need for constant polling and reduces processor overhead. A digital change of state can be configured to detect rising, falling or both edges.

The PCIe-IDIO-24 is useful in applications where high common-mode external voltages are present. Isolation is required to guard electronics against transient voltage spikes and offers greater common-mode noise rejection in surroundings containing industrial machinery and inductive loads. These applications include factory automation, energy management, industrial ON/OFF control, security systems, manufacturing test, and process monitoring .I/O is accessed via a 78-pin DB female connector on the mounting bracket of the card. A molded breakout cable is available that divides the 78 pins into two DB37F connectors. Also available is a kit (model STB-37/2 Kit) which includes the cable, two STB-37 screw terminal boards, and a one-foot length of DIN-rail mountable SNAPTRACK to mount the screw terminal boards.