User guide

Additional Installation Tips
6 AdditionalInstallationTips
When experiencing communication problems in for example noisy environments
or when operating close to temperature limits, the following recommendations
are to be noticed.
6.1 GroundingtheOperatorPanel
1
2
3
4
5
6
Door
Operator panel
Ferrite core
Mounting plate in the cabinet
Power supply
24 V DC
5350
The operator panel’s mounting clamps do not provide a secure grounding
connection between the panel and the device cabinet, see 1 in drawing above.
1.
Connect a 2.5 mm
2
wire between the ope
rator panel’s quick-connect plinth
and the panel chassis, see 2 in drawi
ng above.
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:
Thegroundingwiresshouldbeshortandtheconductorshouldhavealargearea.
Along,thingroundingwirehasaveryhighimpedance(resistance)athighfrequencies
andwillnotguidedisturbancestotheground.
Multi-wireconductorsarebetterthansinglewireconductorswiththesamearea.
Abraidedconductorwirewiththe sameareaisevenbetter. Thebestisashort,thick
groundingbraid.
BeijerElectronics, MAEN011A
16