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Chapter 0 Safety Precautions
Users are advised to carefully read the safety precautions required in this chapter before installing,
testing and repairing the system. Any personnel injury and equipment loss caused by illegal
operation are irrelevant to the company and bear any responsibility.
0.1 Before Supplying Power to the Drive
Warning
The main circuit must be correctly wired. The input terminals is R, S, T. The output terminals U, V,
W must only be used to connect the motor. Connecting the input supply to any of the U, V or W
terminals will cause damage to the drive.
Caution
To avoid the front cover from disengaging or other physical damage, do not carry the drive by its
cover. Support the unit by its heat sink when transporting. Improper handling can damage the drive
or injure personnel, and should be avoided.
To avoid the risk of fire, do not install the drive on or near flammable objects. Install on
nonflammable objects such as metal surfaces.
If several drives are placed inside the same control panel, provide adequate ventilation to maintain
the temperature below 40°C/104°F to avoid overheating or fire.
When removing or installing the digital operator, turn off the power first, and then follow the
instructions in this manual to avoid operator error or loss of display caused by faulty connections.
Warning
This product is sold subject to IEC 61800-3. In a domestic environment this product may cause radio
interference in which case the user may need to apply corrective measures.
0.2 Wiring
Warning
Always turn OFF the power supply before attempting drive installation and wiring of the user
terminals.
Always turn OFF the power supply before attempting drive installation and wiring of the user
terminals.
Wiring must be performed by a qualified personnel / certified electrician.
Make sure the drive is properly grounded. (200V Class: Grounding impedance shall be less than
100Ω. 400V Class: Grounding impedance shall be less than 10Ω.) It is required to disconnect the
ground wire in the control board to avoid the sudden surge causing damage on electronic parts if it is
improperly grounded.
Please check and test emergency stop circuits after wiring. (Installer is responsible for the correct
wiring.)
Never touch any of the input or output power lines directly or allow any input or output power lines
to come in contact with the drive case.
Do not perform a dielectric voltage withstand test (megger) on the drive or this will result in drive
damage to the semiconductor components.
Caution
The line voltage applied must comply with the drive’s specified input voltage.
Connect braking resistor and braking unit to the designated terminals.
Do not connect a braking resistor directly to the DC terminals, otherwise fire may result.
Use wire gauge recommendations and torque specifications.
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