KL2904 EtherCAT Terminal

The KL2904 is a four-channel relay output terminal from the Beckhoff Bus Terminal series (KL series) for the traditional K-Bus I/O system. It uses electromechanical relays to switch loads that require galvanic isolation or that operate at voltages beyond the standard 24 V DC range, such as 230 V AC actuators, lamps, contactors, and valves. It belongs to the same relay output family as the KL2602, KL2612, KL2622, KL2631, KL2641, KL2652, KL2692, KL2751, KL2761, and KL2784. Unlike EtherCAT terminals (EL series), the KL series communicates via the K-Bus and is typically used with Beckhoff Bus Couplers or Bus Terminal Controllers.