Normal operation
The battery pack is switched on and the operator operates on battery power in the event of a power failure.
Remote control of battery operation (wake-up)
Battery operation can be activated after a power failure, e.g. via a building management system or a smoke extraction system. If the potential-free contact of the external system closes, the battery operation is activated and the STG 127 starts up. If there is a connection to SSK of the door control unit, the door opens and remains open.
If the contact is opened, battery operation switches off and the door closes with spring force. This function does not interrupt the loading process.
Battery operated door opening in case of power failure
A relay contact is connected to the SSK terminals of the door control unit. In the event of a power failure, the relay switches permanently, the door opens and remains open.
Beep during battery operation
If the system is in battery operation after a power failure, it will beep every 5 seconds. The volume can be adjusted in two steps or the beep can be muted.