Product Description:

The 0GH-DI486 is a discrete input module produced by B & R Automation for the 0GH PLC Modules series. Installed in a backplane alongside a central processor, the unit delivers digital feedback from field devices such as limit switches and proximity sensors to the controller. This supports deterministic logic execution within an automated production cell.

It offers 32 channels arranged as two banks of 16 inputs, enabling common wiring patterns while still meeting group isolation rules. Each channel is rated for a nominal supply of 24 VDC and accepts sink or source wiring. A logic HIGH is detected once the terminal voltage rises above 15 V, whereas a LOW is registered below 5 V. The module presents only 6 kΩ of input resistance per channel, minimizing line current and heat dissipation. Signal integrity is improved by a hardware filter that settles within ≤1 ms, and an optocoupler stage provides both group and PLC isolation; no isolation exists between inputs that share the same group. The housing carries an IP20 rating, so installation inside a protective cabinet is required.

Response time is predictable because the typical propagation delay is 0.5 ms, and transient overvoltage can be tolerated up to 30 VDC without risking channel damage. Even when all lines are simultaneously energized, the board dissipates only 1.2 W, easing thermal management inside compact enclosures. Field conductors land on 2 × 18-pin terminal blocks that simplify systematic labeling and allow orderly connection of input wiring. A dedicated optocoupler on each group enforces electrical separation from the backplane while the absence of same-group isolation keeps the input pairs referenced to a common return, reducing wiring complexity and voltage drop across long runs.