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Installing input noise filter
The inverter performs high-speed output switching, which may cause the noise flow from the
inverter to power supply lines that negatively affects on peripheral equipment.
Therefore, it is recommended to use an input noise filter to reduce noise flowing out to power supply
lines.
This also helps reduce noise that enters the inverter from power supply lines.
To prevent electric shock, be sure to ground the inverter and the motor.
The 200-V class should be connected to the ground terminal under type-D grounding conditions (con-
ventional type 3 grounding conditions: 100 or less ground resistance), The 400-V class should be
connected to the ground terminal under type-C grounding conditions (conventional special type 3
grounding conditions: 10 or less ground resistance).
For the ground cable, use the applicable cable or a cable with a larger diameter. Make the cable length
as short as possible.
When several inverters are connected, the ground cable must not be connected across several invert-
ers or looped. Otherwise, the inverters and peripheral control equipment may malfunction.
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