BA_Airfilter Mini_151210_GB.doc
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22.07.2013
6.1.2 Connection of an external control
The Airfilter is switched on or controlled (remote switch automatic mechanism) either on the
membrane keyboard or by an external control (e.g. of the machine to be extracted).
The remote switch automatic mechanism is connected to the Airfilter using a nine-pole cable
with sub-D9 plugs.
Figure
Pin
Designation
Explanation
Connector socket
Sub-D9,
on the side of the unit
1
Start contact In order to put the LMD into operation a contact
between Pin1 and Pin2 have to be established.
Important:
LMD switches off first when the time
programmed has been reached. (Overtravel
time approx. 20 s).
2
EXTIN+
Internal switch contact for starting the turbine
and increasing or reducing the motor speed of
the turbine.
3, 4 „Filter alarm“ Floating output (normal open contact) for
interpretation of the warn alarm „Filter alarm“
5, 6 Operation
control
Floating output (normal open contact) for
interpretation of the operation control.
The alarm at this output always occurs when
the unit identifies an operation.
7
Increasing
turbine
motor speed
In order to increase the performance of the
turbine, a contact between Pin7 and Pin2 is
necessary. When spreading a permanent
contact, this motor speed of the turbine will be
increased till the motor speed maximum.
8
Reducing
turbine
motor speed
In order to reduce the performance of the
turbine, a contact between Pin8 and Pin2 is
necessary. When spreading a permanent
contact, this motor speed of the turbine will be
reduced till the motor speed minimum.
9
GND
Internal reference potential (Ground)
Table 1:
Connection of an external control
(arrangement of the plug contact/ terminal assignment of
connection)
