Additional Installation Tips; Grounding The Operator Panel - Beijer Electronics BoX2 pro Installation Manual

6

Additional Installation Tips

When experiencing communication problems in noisy environments or when
operating close to temperature limits, the following recommendations are to be
noticed.
6.1

Grounding the operator panel

Door
Operator panel
1
Ferrite core
6
The mounting clamps of the operator panel do not provide a secure grounding
connection between the panel and the device cabinet, see 1 in drawing above.
1. Connect a wire, that is sized correctly according to local electrical codes,
between the quick-connect terminal connector on the operator panel and the
chassis of the panel, see 2 in drawing above.
2. Connect a wire or grounding braid, that is sized correctly according to local
electrical codes, between the chassis of the operator panel 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.
Connect a wire or grounding braid, that is sized correctly according to local
electrical codes, between the chassis of the operator panel and the closest
grounding point.
Beijer Electronics, MAEN275
Mounting plate in the cabinet
3
2
Power supply
24 V DC
5
4
Additional Installation Tips
5350
21