Product Description:

The R-IB IL 24/230 DOR4/W is an output relay module from the R-IB Interface Modules series produced by Bosch Rexroth Indramat. Installed on an inline I/O bus, it switches discrete field devices such as contactors or pilot lamps under PLC control and isolates the low-level controller signals from the higher voltages present on actuators. The device’s four relay channels allow straightforward expansion of digital outputs in distributed industrial automation racks.

Each output channel is built around a Changeover Relay with contacts manufactured from Gold-Plated material, so signal integrity is maintained even at low currents. The relays can carry up to 3 A per channel, providing sufficient headroom for inductive loads while the gold surface reduces contact resistance. Logic circuitry is powered by a 7.5 V DC supply taken from the inline backplane; this low voltage minimizes dissipation inside the terminal strip. A total of 4 outputs are mapped into the controller image table, and the module occupies one byte in the bus because the output address area equals 4 bits. Together, these parameters define the electrical drive capability and the address footprint used when programming the host controller.

The module draws a maximum of 187 mA from the logic rail, so power budget calculations for the segment supply are uncomplicated. Its compact front dimension of 48.8 mm width conserves DIN-rail space, while the overall height of 119.8 mm aligns with adjacent inline terminals to keep wiring duct openings clear. An output address field of 4 bit ensures that only the necessary register space is consumed on the bus, and the internal identification code 189 lets diagnostic tools verify that the correct hardware variant is present without manual inspection.