Inovance MD500-PLUS Series - Wiring of Main Circuit Terminals

Electrical Installation
‑127‑
Table 7–14 Recommended main circuit cables for T12 models
Struc‑
ture
Model
Rated
Input
Current
A
RST/UVW
Grounding Wire
Screw
Tightening
Torque
N•m (lbf•in.)
Cable
(mm
2
)
<1>
Cable Lug
Cable
(mm
2
)
<1>
Cable Lug
T12
MD500T315G‑PLUS
MD500T315G‑L‑PLUS
565.0
2 x (3 x 185)
BC185‑16 185 BC185‑16 M16
85.0 (753.1)
MD500T355G‑PLUS
MD500T355G‑L‑PLUS
617.0
MD500T400G‑PLUS
MD500T400G‑L‑PLUS
687.0
2 x (3 x 240)
BC240‑16 240 BC240‑16 M16
85.0 (753.1)
MD500T450G‑PLUS
MD500T450G‑L‑PLUS
782.0
7.3.3 Wiring of Main Circuit Terminals
The following describes the requirements for the wiring of main circuit terminals. For
requirements on the selection, routing, and wiring of main circuit cables, see "
7.3.4
Requirements on Wiring of the Main Circuit
" on page 129Requirements on Wiring of
Main Circuit Cables
.
To prevent accidents caused by short circuits, install fuses on the input side. For
requirements of fuses on the input side and recommended fuse models, see
"Conditions for Compliance with the LVD" in the
MD500‑PLUS Series General‑Purpose
AC Drive Hardware Guide
.
R, S, and T on the input side
● Input wiring does not need to follow any phase sequence requirements.
● Wiring and installation of external main circuits must comply with local
regulations and related IEC requirements.
● Use copper lead wires of appropriate dimensions according to the
recommendations on main circuit cable selection.
DC bus (+)/(-)
● Note that there is residual voltage at the DC bus (+)/(‑) terminals upon power‑off.
Do not proceed with wiring until the circuit has been powered off for at least 10
minutes and the CHARGE indicator is off. Failure to comply may result in electric
shock.
● When wiring an optional external braking component for a model rated at 90 kW
or above, ensure correct polarity (+)/(‑). Failure to comply may result in damage to
the AC drive and braking components or even fire.
● Ensure that the wiring length for the braking unit does not exceed 10 m. Use
twisted pair cables or tight pair cables for parallel wiring.
● Avoid connecting the braking resistor directly to the DC bus. Failure to comply
may result in damage to the AC drive or even fire.