Additional Installation Tips
6
Additional Installation Tips
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 Grounding the Operator Panel
1
2
3
4
5
6
5350
Door
Operator panel
Ferrite core
Mounting plate in the cabinet
Power supply
24 V DC
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 operator panel’s quick-connect plinth
and the panel’s chassis, see 2 in drawing above.
2. Connect a 6 mm
2
or 4 mm
2
wire or grounding braid between the operator
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. Minimum
cross-section of the cable is 2.5 mm
2
.
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.
Beijer Electronics, MAEN017F
20
