BA_LMD-508_150602_GB.doc
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02.06.2015
5.2 Electrical connection of the unit
•
The LMD is either switched on or controlled at the membrane keyboard or through an external
control (e. g. of the machine to be sucked out) (remote switch automatic.
•
The connection of the remote switch automatic to the LMD is carried out via 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. Beim Anlegen eines dauerhaften
Kontakts, erhöht sich die Turbinendrehzahl bis
zur Maximaldrehzahl
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 goes
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)
