Fire damper - FDMQ 120
Page 16
Version 2023-03-07
TPM 162/22
Optical smoke detector ORS 142 K with the socket 143A
■
The smoke detector ORS 142 K is used for early smoke detection
in rooms or inside the ventilation system.
■
The sensor operates on the light scatter principle. Inside the
scanning chamber is a light source and a light sensor, in the
normal state the light from the source does not fall on the
senzor. Only when smoke enters the scanning chamber the light
is scattered and falls on the senzor.
■
The smoke detector can be connected directly to the actuator
(design .41 and .51) which, in case of smoke detection, passes to
the safety position, or to the BKN communication and supply
device (design .61, .63).
■
By early detection of smoke, it can be effectively prevented from
spreading of smoke through the ventilation system. In addition
to smoke detection, the sensor can distinguish and signal slight
and heavy contamination, e.g. the presence of large amounts of
dust.
■
The ORS 142 K smoke detector has an alarm memory, i.e. if the
alarm is triggered, the safety relay opens and stays in this state
even if the smoke disappears from the scanning chamber. The
sensor remains in the alarm state until the power supply is
briefly reset.
■
On the pin 3, an external device can be connected via RS-Bus
communication to report the status of the sensor.
■
Pin 6 has no connection to the detector and is designed as a
load-bearing structure in the base.
ORS 142 K
2
3
4
5
6
1
RS-Bus communication
relay contact
relay contact
Optical smoke detector ORS 142 K with the socket 143A
Operating voltage
18 … 28 V DC
Residual ripple
≤ 200 mV
Power Consumption Socket (without actuator)
max. 22 mA
Degree of protection
IP 42
Ambient temperature
-20°C … +75°C
Aditional temperature senzor
+70°C
Connection - net
- motor
- communication and supply device BKN
Cabel 1m, connected to terminals 1, 2 and 4
Actuator connected on the terminals 2 and 5
Cabel 1m, connected to terminals 1, 2, 4 and 5
Socket 143A
Relay contact
LED
In operation
Green
Shines
Slight contamination
Green
/
Yellow
Flashes
Heavy contamination
Green
/
Yellow
Flashes
Fault
Yellow
Shines
Alarm
Red
Shines
Power Off
Off
–
4
5
4
5
1 ORS 142 K
2 Socket 143A
3
Side cable entries Ø 9mm
4
Rear cable entries Ø 9mm
5
Fixing hole Ø 4,5 mm
6
Fixing hole Ø 3,7 mm
Ø 80
3
3
3
3
Ø 80
3
3
5
0
5
9
,5
