Follow the precautions to wire the ground for one drive or a series of drives.
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Electrical Shock Hazard
Make sure that the protective ground wire complies with technical standards and local safety regulations. The EN 61800-5-1:2007 standard specifies that you must wire the power supply to automatically de-energize when the protective ground wire disconnects. If you turn on the internal EMC filter, the leakage current of the drive will be more than 3.5 mA. Use these closed-loop crimp terminals or equivalent to connect a protective ground wire that has a minimum cross-sectional area of 10 mm 2 (copper wire).
- 8-4NS from JST Mfg. Co., Ltd.
- R8-4S from NICHIFU Co., Ltd.
- P10-8R from PANDUIT Corp.
If you do not obey the standards and regulations, it can cause serious injury or death.
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Electrical Shock Hazard
Ground the neutral point on the power supply of drive models BxxxE, 2xxxE, and 4xxxE to comply with the EMC Directive before you turn on the EMC filter or if there is high resistance grounding.
If you turn ON the EMC filter, but you do not ground the neutral point, it can cause serious injury or death.
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Electrical Shock Hazard
Use a ground wire that complies with technical standards on electrical equipment and use the minimum length of ground wire.
Incorrect equipment grounding can cause serious injury or death from dangerous electrical potentials on the equipment chassis.
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Electrical Shock Hazard
Correctly ground the ground terminals. Obey federal and local electrical wiring codes for correct grounding methods. The maximum grounding resistance is
- 200 V class: ground to 100 Ω or less
- 400 V class: ground to 10 Ω or less
If you touch electrical equipment that is not grounded, it can cause serious injury or death.
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Note:
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Only use the drive grounding wire to ground the drive. Do not share the ground wire with other devices such as welding machines or large-current electrical equipment. Incorrect equipment grounding can cause drive or equipment malfunction from electrical interference.
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To connect more than one drive to the same grounding circuit, follow the instructions in the instruction manual. Incorrect equipment grounding can cause drive or equipment malfunction from electrical interference.
When you connect more than one drive, refer to Figure 1. Do not loop the grounding wire.
Figure 1. Wiring More than One Drive
