Introduction

Introduction 1: — KL2521

1 Channel Pulse Train Output Terminals

The KL2521-xxxx output terminals change the frequency of a binary signal and output it (electrically isolated from the K-bus). The frequency is preset by a 16 bit value from the automation device.

The output stage of the KL2521-0000 is RS422-compatible. The outputs can be used both for connection to RS422 receivers and for the direct connection of an optocoupler (without external supply voltage) (default mode).

The terminal KL2521-0010 contains additional outputs (230 V_AC/DC, 100 mA) instead of the additional inputs (+T, +Z) of the default variant.

The KL2521-0015 terminal corresponds to KL KL2521, but is supplied with different default values for registers R32 and R36:

R32 = 0x2010 (8201_dec):

R32.5: Ramp function inactive
R32.13…15: Pulse direction control positive logic

R36 = 0x2710 (10000_dec): Base frequency 10 kHz

The version KL2521-0024 was designed for connection to optocouplers (with external supply voltage). For connection to inputs with a large input resistance, an external supply voltage (up to 24 V) can be used (active mode).

The Bus Terminals indicate their signal state by means of light emitting diodes. The LEDs are clocked with the outputs and each displays an active output.