User Guide

9
Appendix
Lighting Control
82
Siemens Desigo TRA User Guide A6V10415564_en_a_21
Building Technologies 2015-06-23
9.2.1.3 Central Function
The central function can override or switch multiple rooms in a building with the
same priority. Central functions are classified by building requirements:
 Renter
 Sections
 Occupancy function (office/production)
 Floors
 Entire building
Central functions use the same BACnet priorities as local control. So that override
at priority 8 is permanent and only temporary at priority 13. A temporary override
can be overridden with the room operator unit.
Central Operation for Lighting
9.2.1.4 Safety Functions
A lighting group can only be switched on and off if the present priority is higher
(remote >8 or local >13). Switching is only possible if the priority is lower due to a
safety function as soon as the normal state is reached.
An active safety function is depicted as follows:
7:00
OnOff On
AutoOnOff
2
8
13
13
2
8
13
13
On
Off Off Off
Room
state
Action
BACnet
priority
138 8 8
Emergency Lighting with Central Operation
NOTE:
Manual switching during an active safety function is only switched after the safety
functions is eliminated.