MD600 Series Compact AC Drive Hardware Guide-EN-B06.PDF - 第49页
Electrical Design ‑ 48 ‑ Figure 4‑14 Handling of unused conductors in a multi-conductor cable ● Requirements on the wiring loop area For cables that transmit low-level sensor signals and shared cables that transmit relay…
Electrical Design
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Figure 4‑12 Routing different types of signal cables
● Routing of multi-conductor cables
Use one multi-conductor cable to transmit one type of signals. If you need to use one
multi-conductor cable to transmit different types of signals, isolate the conductors
that transmit one type of signals, as shown in the following figure.
Figure 4‑13 Routing of multi-conductor cables
If certain conductors in a multi-conductor cable are reserved or unused, connect these
conductors to the equipotential bonding point, as shown below.
Electrical Design
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Figure 4‑14 Handling of unused conductors in a multi-conductor cable
● Requirements on the wiring loop area
For cables that transmit low-level sensor signals and shared cables that transmit
relay signals, lay them close to each other to avoid a large loop area. Use twisted pair
cables for analog signals. Lay digital signal cables close to each other.
Figure 4‑15 Recommended wiring loop area
● Laying multiple types of cables
For cables of different types, route the cables along the equipotential metal plate. To
enhance the internal EMC performance, separate different types of cables or separate
cables with metal separators (recommended) in the same metal (zinc‑iron or stainless
steel) duct, as shown below.
Electrical Design
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Figure 4‑16 Laying multiple types of cables
● Requirements on handing of shielded cables
Minimize the length of the unshielded part of a shielded cable, and connect the shield
to the nearest PE terminal. If the unshielded part is too long, the cable conductor is
prone to signal interference. There is no dedicated PE terminal on the drive enclosure.
In this case, connect the shield to an external PE terminal, as shown below.