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Les langues disponibles
Les langues disponibles
D
GB
Technische Daten
Nennspannung
Netzfrequenz
Leistungsaufnahme max.
Kontakt (Relais R1)
Kontaktmaterial
Max. Schaltstrom bei:
– cosϕ =1
– cosϕ =0,4
Max. Schaltleistung bei:
– cosϕ =1
– DC
Sollwerteinstellung
Hysterese fest
Zul. Umgebungstemperatur:
– Steuerung
– Messfühler
Luftfeuchtigkeit nach
EN 60721-2-3
Schutzart
Gewicht:
– Steuerung
– Messfühler
LW 9 Airflow monitor
Scope of delivery
Sensor with 2.5 m connecting cable
Controller with integrated relay (R1)
Fxing screws (4+1 pieces)
Figure 1
A
Controller
B
Airflow setpoint value setting screw
(1...20 m/s)
C
Yellow LED, displays R1 switching state,
flashes during startup override t
D
Green LED, shows operational readiness
state,flashes if the sensor is broken
E
2-core connecting cable
F
Sensor, adjustable engaged length
Figure 2: Wiring diagram
Terminals 3, 4 and 5: Relay R1
Terminals 6 and 7:
Terminals 9 and 10:
230 V AC ±10%
50/60 Hz
4 VA
Wechsler, potentialfrei
AgNi, cadmiumfrei
10 A
5 A
2500 VA
240 W
1... 20 m/s
ca. 3,5% vom Mess-
wert, min. 0,05 m/s
-20...+60 °C
-30...+80 °C
Klasse 3K3 (15...85%)
nicht kondensierend
IP 20
200 g
120 g
2
Sensor
Operating voltage 230 VAC
– Änderungen vorbehalten ! / Subject to change ! –
Figure 3: Dimensions
For your own safety, read these in-
structions carefully before assembling
the LW 9 and then keep them in a safe
place for future reference.
Usage/Function
Minimum airflow levels in ventilation systems are
monitored with the LW 9 airflow monitor.
If the defined airflow setpoint value (1...20 m/s), is
reached or exceeded, the integrated relay picks up
and ventilation components can be switched with-
out problem. Pre-programmed time steps (t
the controller guarantee a safe startup of the fan.
MAICO accepts no liability for any damage caused
by non-authorised use.
Time steps t
... t
:
1
4
t
approx. 100 ms: Switch-on time after the
1
power supply is „ON" (R1 contacts 3 and 4
closed).
t
approx. 50 seconds: Time for the startup
2
override. Relay R1 picks up for this time,
irrespective of the airflow current value (R1
contacts 4 and 5 closed, yellow LED flashes).
After this, the airflow monitor works in normal
mode, according to the defined setpoint value.
t
approx. 300 ms: Minimum time difference to
3
allow t2 to start again.
t
ca. 2 s: Sensor reaction time.
4
Safety instructions
Assembly, electrical connection work and
repairs should only be carried out by
qualified electricians.
During electrical installation, ensure compliance
with the valid regulations, in particular the
pertinent sections of DIN VDE 0100.
The LW 9 airflow monitor may only be
operated with:
– correctly installed sensor [F].
– the controller [A] correctly installed in a
control cabinet, on a 35mm profile rail.
The LW 9 airflow monitor may not be
operated:
– in ducts, channels or other areas with inflam-
mable materials, fluids or gases.
– in areas subject to explosion hazards
– if it is damaged.
... t
) in
1
4
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