Prewarnings

To ensure that you are warned before the end of the staircase lighting time, you can parameterize a defined number (0-5) of prewarnings.

With the prewarnings, the user can be informed about the imminent end of the function by briefly switching off the lighting system shortly before the end of a staircase lighting time. He can then restart the staircase lighting by pressing a button (retriggering). If he does nothing, the function continues normally.

You can set this using the parameter Number of prewarnings. With the value “0”, the warning function is disabled. To enable the prewarnings, select the number of warning pulses. The first warning starts at the remaining staircase lighting time (tWarning) set via the parameter Warning starts before end.

With every prewarning, the output contact is switched to “released” state for the fixed duration of 500 ms (tu). If you have activated more than one warning, the waiting time (tzv) between the warning pulses is calculated using the following formula:

If a continuous staircase lighting time function is interrupted by premature termination, no prewarning is given