"DALI Gateway C00CX2 EN / C00CX4 EN" software
Functional description
Best. Nr. 1060 00
Page 80 of 136
Setting the pre-warning function of the Staircase timer function
The pre-warning function complies with DIN 18015-2 and is intended to alert anyone present in the
staircase that the lights will go out shortly. The devices of the affected DALI group can be set to a pre-
warning brightness before the group shuts off completely. Usually, the pre-warning brightness will be
less intense than the switch-on brightness. The parameters for the pre-warning time (T
prewarn
) and the
pre-warning brightness can be set separately (cf. Figure 29).
The pre-warning time is added to the staircase lighting time (T
ON
.) The pre-warning time has an effect
on the value of the feedback objects so that the value "0" is tracked in the feedback object only after
the pre-warning time has elapsed.
T
Prewarn
time
time
Reduced brightness during prewarning
T
ON
Switch-on brightness
DALI group
Switching status
feedback
ON
OFF
Prewarning brightness
Fig. 29: The pre-warning of the Staircase timer function without Soft-ON function
In addition, the pre-warning function can also be extended by the Soft-OFF function. With a possible
Soft-OFF-delay, the switch-off behaviour of the staircase lighting function shows the switch-off
behaviour after the pre-warning time as illustrated in fig. 30.
time
time
Switch-on brightness
DALI group
Switching status
feedback
ON
OFF
Prewarning brightness
Reduced brightness during prewarning
T
Prewarn
T
ON
Fig. 30: The pre-warning function of the Staircase timer function with Soft-OFF function
(for example: with minimum brightness = 0 %)
The pre-warning brightness must not necessarily be smaller than the switch-on brightness. Basically,
the pre-warning brightness can be parameterized to values that lie between the maximum and
minimum brightness.