Electrical Installation
‑149‑
Model A B W E D L T C F
185‑10 23 18.5 33.5 16.5 30 82 4.5 10.5 16.5
185‑12 12.8
185‑14 14.7
185‑16 16.7
185‑20 18.8 20.7 14.3
240‑10 26 21 37.7 18.0 32.0 88.0 5.0 10.5 17.0
240‑12 12.8
240‑14 14.7
240‑16 16.7
240‑20 20.7
300‑10 28.0 23.0 41.0 18.0 37.0 97.0 5.0 10.5 17.0
300‑12 12.8
300‑14 14.7
300‑16 16.7
300‑20 20.7
8.3.4 Wiring Descriptions of Main Circuit Terminals
This section specifies requirements on wiring of main circuit terminals. For
requirements on selection, routing, and wiring of main circuit cables, see "
8.3.5 Main
Circuit Wiring Requirements
"
on page 150
.
To prevent accidents caused by short circuit, install a fuse on the input side of the
drive. For requirements and selection of fuses at the input side, see "Conditions for
Compliance with the LVD" in the
MD520 Series General‑Purpose AC Drive Hardware
Guide
.
R, S, and T terminals of the input power supply
● The cable connection on the input side of the drive has no requirements on the
phase sequence.
● The specification and installation method of external main circuit cables must
comply with the local regulations and related IEC standards.
● Use copper lead cables with appropriate dimensions for main circuit cables
according to the recommended values for main circuit cables.
DC bus terminals (+) and (-)
● After the drive is switched off, DC bus terminals (+) and (‑) have residual voltage.
After the CHARGE indicator goes off, wait at least 10 minutes before operating the
drive. Failure to comply will result in electric shock.
● When wiring an external braking component for a model with the power of 90 kW
or above, ensure correct polarity (+)/(‑). Failure to comply will result in damage to
the AC drive and braking components or even fire.
● The cable length of the braking unit must not exceed 10 m. Use the twisted pair
cables or closely‑paired cables for parallel connection.
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