Inovance MD580 Series - Cabinet System

Electrical Design
‑101‑
Table 3–18 Grounding multiple AC drives installed side by side
No.
Wiring Description
①
Connect the PE terminal on the input side of the main circuit to the
grounding copper busbar of the control cabinet through a protective
grounding conductor.
②
Connect the PE terminal on the power supply side to the grounding
copper busbar of the control cabinet.
③
Connect the grounding copper busbar of the control cabinet to the
metal housing through a protective grounding conductor.
④
Connect the motor output cable shield to the PE terminal on the
output side of the product.
3.6.5 Cabinet System
The most cost‑effective method of suppressing interference in a cabinet is to isolate
the interference source from the equipment that may be interfered with. Divide a
cabinet into multiple EMC compartments or use multiple cabinets based on the
intensity of interference sources, and install each device in accordance with the
following wiring principles.
Table 3–19 Wiring principles
No.
Wiring Principle
1
Place the control unit and the drive unit in two separate
cabinets.
2
If multiple cabinets are used, connect the cabinets by using a PE
cable with a cross‑sectional area of at least 16 mm2 for
equipotentiality between the cabinets.
3
If only one cabinet is used, place the devices in different
compartments of the cabinet based on signal intensity.
4
Perform equipotential bonding for devices in different
compartments of the cabinet.
5
Shield all communication (such as RS485) and signal cables
drawn from the electric cabinet.
6
Place the power input filter in a position near the input interface
of the cabinet.
7
Provide spray coating protection for all grounding points in the
cabinet.