Potential supply terminal, 24 V DC 
Bus end cover for E-bus contacts 
EtherCAT fieldbus cable , PUR, flex, M8, plug, straight, male, 4-pin, A‑coded – RJ45, plug, straight, male, 8-pin, 2.00 m 
Bus Terminal, 2-channel analog output, voltage, 0…10 V, 12 bit, differential 
EtherCAT Terminal, 1-channel encoder interface, incremental, 24 V DC HTL, 100 kHz, with 1 x digital output 24 V DC 
EtherCAT Terminal, 1-channel encoder interface, incremental, 5 V DC (DIFF RS422, TTL), 1 MHz 
EtherCAT Coupler with M8 connection 
Bus Terminal, 4-channel digital input, 24 V DC, 3 ms, positive/ground switching 
Bus Terminal, 4-channel analog output, voltage, 0…10 V, 12 bit, single-ended 
Description
The KL2521 output terminal alters the frequency of a binary signal and (electrically isolated from the K-bus) outputs it. The frequency is preset by a 16 bit value from the automation unit. The output stage is RS422 compatible and, in the version KL2521-0024, can be driven with 24 V DC signals. The Bus Terminal indicates its signal state by means of light emitting diodes. The LEDs are driven in time with the outputs and each displays an active output.
