Product Description:

The RME02.1-16-AC115 is a digital input plug-in produced by Bosch Rexroth Indramat for the RECO Drive Modules series. Acting as a field-level interface, the card funnels status signals, such as limit switches and sensor states, to higher-level controllers so that motion drives can react in real time within automated cells. It slides into the RECO backplane and occupies one slot, allowing modular expansion of drive-based control assemblies in packaging, printing, and material-handling lines where compact distributed I/O is preferred.

This unit provides Digital Input functionality only, so it does not source power to actuators. Each card accepts 16 discrete channels, and every point draws only 15 mA of sink current, which keeps PLC power budgets low. The inputs are divided into 2 isolated groups, a design that reduces ground-loop noise between field devices. Within each group, the backplane assigns signals in blocks of 8, simplifying ribbon cable mapping to terminal strips. Because the board is intended for AC sensing, its internal conditioning circuitry is optimized for AC input signals, allowing straightforward connection to pilot lights, relays, or proximity sensors used on conveyors and feeders.

Proper operation depends on the incoming line parameters. The module tracks line frequency at 60 Hz, and its comparator turns on reliably once the signal reaches 115 VAC. Below 85 VAC, the logic remains inactive to avoid false positives, while nominal service is specified for a control grid of 120 VAC. Transient excursions can be tolerated up to 138 VAC without damage to the opto-isolators. With these thresholds, the board suits plant power systems used in North America and still accommodates voltage sag and swell during motor starts. Despite the isolation transformers, the assembly weighs 300 g, so it does not overload card guides or require additional support hardware.