7. Additional Installation Tips
When experiencing communication problems in noisy environments or when operating close to
temperature limits, the following recommendations are to be noticed.
7.1. Grounding the HMI Panel
1
2
3
4
5
6
5350
Door
HMI panel
Ferrite core
Mounting plate in the cabinet
Power supply
24 V DC
The mounting clamps of the HMI panel do not provide a secure grounding connection between the
panel and the device cabinet, see 1 in drawing above. To ground the HMI panel:
1. Connect a wire, that is sized correctly according to local electrical codes, between the quick-
connect terminal connector on the HMI 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 HMI 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 HMI panel and the closest grounding point.
Additional Installation Tips
2023-09 22 Beijer Electronics, MAEN220
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