Instruction Manual

Additional Installation Tips
7 AdditionalInstallationTips
When experiencing communication problems in for example noisy environments
or when operating clo se to temperature limits, the following recommendations
are to be noticed.
7.1 GroundingthePanelPC
1
2
3
4
5
6
Door
Panel PC
Ferrite core
Mounting plate in the cabinet
Power supply
24 V DC
5350
The Panel PC’s mounting clamps do not provide a secure grounding connection
between the Panel PC and the device cabinet, see 1 in drawing above.
1.
Connect a 2.5 mm
2
wire between the Pan
el PC’s quick-connect plinth and the
panel chassis, see 2 in drawing abov
e.
2.
Connect a 6 or 4 mm
2
wire or grounding braid between the panel’s chassis and
the closest grounding point on the door, see 3 in drawing above.
3.
Connect a strong but short grounding braid between the door and the device
cabinet,see 4 in drawing above.
4.
Twist the cables onto the 24 V DC feed, see 5 in drawing above.
2 turns around the ferrite core provide 4 times the suppression of 1 turn.
3 turns around the ferrite core provide 9 times the suppression of 1 turn.
A ferrite core suppresses disturbances to the 24 V feed, see 6 in drawing above.
Note:
Thegroundingwiresshouldbeshortandt heconductors houldhavealargea rea.
Along,thingroundingwirehasaveryhighimpedance(resistance)athighfrequencies
andwillnotguidedisturbancestotheground.
Multi-wireconductorsarebetterthansinglewireconductorswiththesamearea.
Abraidedconductorwirewiththesamearea isevenbetter. Thebestisa short,thick
groundingbraid.
BeijerElectronics, MAEN043
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