Beijer-electronics iX Panel T70 EN Manuel d'utilisateur télécharger pdf (Page 32)

Additional Installation Tips

11 AdditionalInstallationTips

When experiencing communication problems in for example noisy environments

or when operating clo se to temperature limits, the following recommendations

are to b e noticed.

11.1 GroundingtheOperatorPanel

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 t he device cabinet, see 1 in drawing above.

Connect a 2.5 mm

wire between the ope

rator panel’s quick-connect plinth

and the panel chassis, see 2 in drawi

ng above.

Connect a 6 or 4 mm

wire or grounding braid between the panel’s chassis and

the closest grounding point on the door, see 3 in drawing above.

Connect a strong but short ground ing braid between the door and the device

cabinet,see 4 in drawing above.

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 heconductorshouldhavealargearea.

Along,thingroundingwirehasaveryhighimpedance(resistance)athighfrequencies

andwillnotguidedisturbancestotheground.

Multi-wireconductorsarebetterthansinglewireconductorswiththesamearea.

Abraidedconductorwirewiththesameareaisevenbetter. Thebestisashort,thick

groundingbraid.

BeijerElectronics, MAEN006

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Beijer-electronics iX Panel T70 EN Manuel d'utilisateur Page 32