Product Description:

The 0GH-D0428 is a digital output module produced by B&R Automation for inclusion in the 0GH PLC Modules series. As a discrete output card, it converts controller commands into switched DC lines that actuate solenoids, relays, and indicator lamps at the machine level. By providing transistor-based switching at 24-volt logic, the module allows the PLC to drive multiple loads while maintaining isolation between the low-power processor backplane and external devices used in industrial automation cells.

It works on a nominal field supply of 24 VDC, so all channels share the typical control voltage found in cabinet wiring. The board offers 32 outputs, arranged as four groups of eight, which simplifies fused distribution and field connector layout. Each channel can source up to 0.5 A, allowing direct actuation of miniature valves or lamp stacks, while an internal current bus supports a cumulative limit of 16 A across the entire module. Integrated electronic fusing and overload protection disable a channel when thresholds are exceeded, and residual leakage in the off state is limited to 0.3 mA. With a maximum switching rate of 500 Hz, the card can follow high-speed pick-and-place sequences without pulse loss.

The housing measures 285 x 40 x 185 mm, allowing dense stacking on the DIN rail while maintaining airflow around power semiconductors. Internal dissipation is capped at 5 W, and terminal blocks dissipate 2 W per group, so panel designers can predict heat load. Output transitions are handled by driver circuitry that propagates a logic-low to active-high change in 110 µs and returns low in 100 µs, giving deterministic edge placement for sequence control. The transistor topology eliminates contact wear and supports the 4 A group limit when all eight channels operate simultaneously.