C
ombi-
L
ine
Industrial PC M Panel PC
16
DVS 51052 V2.0
© 2010 by Grossenbacher Systeme AG
5.2 C
ONNECTING THE POWER SUPPLY
The Compact Panel PC M is a device compliant with protection class 3.The
system must be fed with a
SELV
24VDC (safety extra-low voltage) supply.
The power supply is not electrically isolated. The 0V terminal is directly
connected to the housing potential. The power supply is protected with a
resettable fuse. The relevant national regulations must be observed when
connecting the Compact Panel PC M.
The connection should be made as follows:
•
The cross-section of the power supply cable must be between 0.75mm²
and 2.5mm²
•
A lead or wire can be used for the connection
•
The current consumption must be taken into account for the power
supply (
Î
sect. 11).
•
The functional ground is not compulsory for operation. It may help to
prevent interference and potential differences.
•
The 0V pin is directly connected to the housing potential.
•
The two connection cables must be connected with each other close to
the plug in order to ensure a safe connection.
The plug connector (socket strip with screw terminals) for the terminal is
supplied with the device.
If the polarity is reversed and a 0V connection is added at
the same time, e.g. GND connection of the COM1
interface, the leakage current will flow across this 0V
connection. The Compact PC/Compact Panel PC or
external components may be destroyed if the housing is
not correctly connected to the 0V potential.
The two connection cables must be connected with each
other close to the plug in order to ensure a safe
connection.
The Compact Panel PC M contains no serviceable fuse.
Designation Function
+24 VDC
+24VDC power supply
- reserved
0 V
0 V power supply
reserved !
24VDC
0V
Funktionserde
DVS 51052-V3.0
