KL2791 - single-channel speed controller terminal

LED displays

LEDs
LED
Display
K-Bus run (green)
off
no data transfer on the K-bus
on
Data transmission on the K-bus is active
Sync (green)
off
Terminal is not synchronized with the mains*
on
Terminal has synchronized itself with the mains*
ON (green)
off
Process data are zero
on
Process data are not zero
Error (red)
on
A load-side overcurrent was detected

*) Synchronization with the mains can only occur if a load is connected!

 
WARNING
Risk of electric shock!
With the Sync LED switched off mains voltage may still be present at the KL2791 output!
At this stage, the synchronization was not yet performed!