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6.12
Connecting the closed-loop control
6.12.1
Connecting ground
Danger due to failure of the protective and monitoring equipment
The converter must be grounded to ensure that it operates safely and reliably. If the converter
is operated with insufficient grounding, then the protection and monitoring functions can fail.
Death, serious injury, or material damage will result.
• Always apply all of the necessary protective measures.
• Always observe the five safety rules when working with the converter.
• Follow these steps when grounding the machine:
Each cabinet has a grounding lug for grounding the components installed in the cabinet. It is
located at the bottom of the cabinet. Connect the cabinets securely to the plant grounding
system via these grounding lugs.
Figure 6-6
6.12.2
Connecting the auxiliary voltage
Connect the auxiliary voltage (e.g. for SITOP) to the terminal block. The maximum cross-section
of the cables is 2.5 mm
circuit manual under "Technical specifications and drawings".
See also
Technical specifications and drawings (Page 143)
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
DANGER
– Establish the connections in a cabinet.
– Ensure that the connections are also established over several cabinets.
– Establish the ground connection for the whole plant immediately.
Grounding lug
. You will find detailed information in the terminal diagram or in the
2
Electrical connection
6.12 Connecting the closed-loop control
93
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