KRM-X® Duct Smoke Detector
4
|
10
| Fire Protection | Data sheet No. 41350 | Version 01-2019
LEDs
Meaning
Comments
Alarm / reset
(red)
Smoke alarm or
failure
Reset after failure:
Briefly press alarm/reset button. KRM-X restarts immediately.
Reset after alarm:
Press and hold the alarm/reset button for at least 2 seconds until the red alarm LED in the
button goes out. Do not release it until then. KRM-X will start again only after release. If the
alarm/reset LED continues to flash while the button is pressed, the smoke detector is still
filled with test gas/test spray/smoke and cannot be reset. In that case blow out detector
out or wait.
Failure
(yellow)
Circuit board
defective or smoke
detector missing
Check/replace circuit board or RM 3.3-X (ALN-E) smoke detector.
Smoke alarm
(2 x red)
Smoke alarm or
contamination > 99%
Red LEDs directly on the RM 3.3-X (ALN-E) smoke detector. LEDs remain on until reset has
taken place.
Power supply
(green)
Supply voltage
connected
Green LED lights up if supply voltage is connected.
Airflow (blue)
Insufficient airflow
Blue LED lights up when airflow is too low and air relay (only present on DIBt versions)
drops out. Check smoke detector position in the duct, check sampling tube (TurboTube)
for contamination and clean if necessary.
Programming the bus address and baudrate
(Modbus/BACnet versions only):
Display view
Comments
Press buttons T3+T4 on circuit board (to the right of the display) simultaneously to switch from
the contamination display to the bus address display (display flashes).
Display flashes
Use button T3 or T4 to enter the desired address (1–99). The default address on delivery is 99.
The display returns to its previous state after 3 seconds without a button being pressed.
After pressing T3+T4 simultaneously the current bus address is saved and the two underscores
appear for about one second.
Display and
yellow LED flash
Now the baudrate can be selected (display and yellow LED flash); available baudrates:
01 = 9600 (default)
02 = 19200
03 = 38400
04 = 76800
After pressing T3+T4 simultaneously once more the current baudrate is saved and the two
underscores appear for about one second, after which the device returns to the contamination
display.
Note:
After 6 seconds without a button being pressed the device returns to the contamination display,
and the current value is saved.
T3+
T4
