CDA3000 Operation Manual
3-3
3  Installation
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3.2 Grounding lead 
connection
 
  
Figure 3.2 Star configuration layout of the grounding lead
 
Step Action
Note: PE mains connection to 
DIN VDE 0100 part 540
1
Ground every inverter module! 
Connect terminal X1/  in star 
configuration to the PE rail (main 
ground) in the switch cabinet.
Mains connection < 10 mm²:
Grounding lead cross-section min. 
10 mm² 
or use 2 wires with cross-
section of mains leads.
Mains connection > 10 mm²:
Use grounding lead (PE) cross section 
according to cross-section of mains 
leads.
2
Also connect the grounding lead 
connections of all other 
components, such as the line choke, 
filter, etc., in star configuration, to 
the PE rail (main ground) in the 
switch cabinet.
Note the following points: 
• The grounding lead must be laid out in star configuration to conform 
to the EMC standards.
• The backing plate must be well grounded.
• The motor cable, mains lead and control cable must be laid 
separately from each other.
• Avoid loops, and lay cable over short distances.
• The operational leakage current is > 3.5 mA.
 
 
W1
V2
W2
U2
U1
V1
 
 
W1
V2
W2
U2
U1
V1
 
 
W1
V2
W2
U2
U1
V1
PE