43 / 68
Siemens
RDU341 Basic Documentation
CE1P3172en
Building Technologies
2015-06-08
3.10.12 Emergency control (LTE Mode only)
In case of smoke or fire the damper can be overridden via KNX.
The necessary information is provided by the function block “HVAC Emergency
Mode”
The table below describes the behavior of the controller output.
#
Datapoint value
Damper
0 Normal
Normal operation
1 EmergPressure
Fully open
2 EmergDepressure
Fully closed
3 EmergPurge
Fully open
4 EmergShutdown
Fully closed
5 EmergFire
Fully closed
Emergency signals have highest priority and command the control output
accordingly. Any ongoing function like fan-overrun etc. will be stopped immediately.
The priority is as follows:
1. Smoke
(Emergency 1..4)
2. Fire
(Emergency 5)
3. Fan
overrun
(Emergency 0 and el heater fan overrun function is active)
4.
Normal operation (Emergency 0 and operation by operating mode button)