Connections And Shielding - Lenze SMVector Reference Manual

3.3.3 Connections and Shielding
To ensure good system noise immunity all network cables should be correctly grounded:
• Minimum recommendation of grounding is that the network cable is grounded once in every
cubical.
• Ideally the network cable should be grounded on or as near to each drive as possible.
• For wiring of cable to the connector plug the unscreened cable cores should be kept as short
as possible; recommended maximum of 20mm.
Table 3: Network Length Specifications
Baud Rate
10kbps
20kbps
50kbps
125kbps
250kbps
500kbps
800kbps
1Mbps
NOTE:
As per the CiA specification (DRP303-1) it is recommend that the CAN_GND be
connected on all nodes. If this is not possible due to application or cable restrictions
then it is recommend that the CAN_GND terminal be connected to chassis/earth (PE).
Connect to
drive earth
(PE)
Figure 4: Connector Wiring Diagram
Installation
Maximum Network Length
5000 meters
2500 meters
1000 meters
500 meters
250 meters
100 meters
50 meters
25 meters
1 2 3 4 5
7
20mm
max
CMVCAN01B