Product Description:

The RECO RMK02.2-LML-SER-FW module is a communication and power interface produced by Bosch Rexroth Indramat within the RECO Drive Modules series. Installed alongside Indramat servo drives, it forms part of a decentralized mounting rail and routes control signals through a fiber-optic SERCOS ring. By serving as the central repeater and logic coupler, the unit allows a motion controller to supervise multiple axes while maintaining electrical isolation between cabinets. Its role in industrial automation is to connect the low-level drive bus with higher-level PLC or CNC equipment through standardized serial telegrams.

The housing mounts on a TS 35 × 27 × 15 DIN profile and accepts a control supply of 24 VDC, while tolerating line variations of ±20 percent. Overcurrent events are cleared by an internal fuse rated at 3.0 A, which limits fault energy before it reaches downstream electronics. Communication follows the SERCOS protocol, and all telegrams are transferred through a single fiber-optic duplex link, which helps prevent copper-borne noise from affecting signal quality. The enclosure is rated IP20, which provides finger-safe terminals but requires installation inside a cabinet or other protective enclosure. A dedicated RS-232 monitor port allows ring status to be checked without interrupting the optical channel, and the 192 mm height aligns with adjacent drive regulators.

Node configuration is handled by 2 × 9-step rotary switches that allow address selection from 1 up to 99 without software. The optical master can supervise as many as 254 devices, while this coupler uses one of the 16 available rack locations and leaves room for up to 15 I/O or logic modules in the same carrier frame. Lateral clearance is reduced by a width of 41.3 mm, so multiple units can be installed in a row without exceeding standard cabinet depths. This arrangement supports compact multi-axis systems where rail space and orderly module placement are both important.