Smoke detector input (T1)

Access 5.5

The described functions may be used only in compliance with applicable local regulations. Compliance must be verified by the user or confirmed with the local Systemair organization.

The Fire/Smoke mode can be activated via a dedicated digital input or the specialized “T1 SMOKE” input.

The T1 SMOKE input monitors the current passing through the connected smoke detector, and the controller responds based on the measured value. Four operating states are defined according to the measured current:

Normal

Service

Alarm

Error

The specific current thresholds depend on the smoke detector model. These values are factory-tested, predefined in the controller, and cannot be adjusted manually.

If the measured current deviates from the normal operating range, an alarm may be triggered depending on the detected condition:

6015 – Smoke Alarm: Smoke detected

6020 – Service Alarm: Smoke detector requires service

6025 – Sensor Error: Smoke detector fault

Use example of T1 Smoke input
	Variable	Available options & Selection	Note
	Configuration of the smoke function
	Configuration > Functions > Fire/Smoke
	Fire function	>	Setup of the Fire function
	Smoke function	>	Setup of the Smoke function
	Smoke detector function	\| Off \|	The T1 SMOKE will be used to activate Smoke mode
		\| Fire alarm \|
		\| Smoke alarm \|
	Smoke detector brand	\| Calectro \| Finsecure \|	Select smoke detector in use
	Smoke alarm digital input	\| No \| Yes \|	In addition to T1 SMOKE the digital input can also be used to trigger this mode
	Status of the smoke alarm
	Data & Settings > Fire/Smoke
	Smoke detector status	Error / Alarm / Service / Normal	Based on the measured current