Installing the Inverter
18
Note
The product requires special Class 3 grounding. Resistance to ground must be
≤
10 Ω.
•
Install ground connections for the inverter and the motor in accordance with
the local codes and specifications to ensure safe and accurate operation.
Using the inverter and the motor without the specified grounding connections
may result in electric shock.
•
This product can cause a DC current in the protective earthing conductor. If
an RCD or monitoring (RCM) device is used for protection, only RCD or
RCM of Type B is allowed on supply side of this product.
•
Large amount of leakage current is generated around the inverter due to
high-speed switching operation. The inverter and the motor must be properly
grounded to prevent electric shock.
Step 3 Power terminal wiring
The following diagram shows the terminal layout on the power terminal block.
Refer to the detailed descriptions to understand the function and location of each
terminal before making wiring connections. Ensure that the cables selected meet
or exceed the specifications in
them.
•
Tighten the terminal screws to the rated torque. Loose or over tightened
terminal screws may cause short circuits and equipment malfunction.
•
Use copper stranded cables only. Power cables must be rated at 600 V,
167
℉
(75
℃
) and control circuit cables rated at 300 V, 167
℉
(75
℃
).
•
For the inverter control circuit, use STP (Shielded Twisted Pair) cables. Do
not route the control cables in the same conduit where the power cables are
