Connecting An External Detector Alarm Display; Data Logging - Bosch FAS-420-TT Series Operation Manual

Aspiration smoke detector LSN improved
Detector
module
Activation threshold for airflow malfunction
Low (+/- 10% volume flow change)
Average (+/- 20% volume flow change)
High (+/- 30% volume flow change)
Very high (+/- 50% volume flow change)
Airflow fault delay
30 seconds
2 minutes
15 minutes
60 minutes
Notice!
When the fire panel is in revision mode, the LOGIC·SENS is temporarily deactivated, allowing
the detector modules to be checked quickly and directly.
The sensitivity value is based on measurements with standard test fires (old value in
brackets).The activation threshold for the airflow malfunction is set to 20% volume flow
change by default. Higher values are not permitted within EN 54‑20 or ISO 7240-20.
5.6

Connecting an External Detector Alarm Display

A digital external detector alarm display can be connected to the FAS-420 series aspirating
smoke detectors. This is available by separate order.
Connect the remote indicator to the motherboard of the FAS-420 using the terminal strip X6.
The unit must be in a voltage-free state for this.
Alternatively, FNS‑420‑R LSN Strobes can be connected via LSN and configured via
FSP‑5000‑RPS.
5.7

Data Logging

The FAS‑ASD‑DIAG Diagnostic Software is used to conduct the device tests.
The current airflow sensor data, smoke level values, various status values and the parameters
configured via the programming software can be read out locally using a laptop. This makes it
much easier to detect altered operation conditions in the event of service being carried out.
Bosch Sicherheitssysteme GmbH
Sensitivity
0.06%/m (0.2%/m) 0.4%/m (1%/m)
0.12%/m (0.4%/m) 0.8%/m (2%/m)
Operation guide
Installing the Aspiration smoke detector | en
Alarm delay
0 seconds
10 seconds
30 seconds
60 seconds
LOGIC·SENS filter
Off
On
2020.04 | 6.1 | F.01U.029.275
83
Further
sensitivity
Adjustable
sensitivity
levels)