3.3 Main Circuit Wiring
68 SIEPCYEUOQ2V01A Q2V Technical Manual
WARNING! Electrical Shock Hazard. Make sure that the protective ground wire conforms to technical standards and local
safety regulations. The IEC/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. You can also connect a protective ground wire that has a minimum cross-sectional area of 10 mm
2
(copper wire). If you do not obey the standards and regulations, it can cause serious injury or death.
WARNING! Electrical Shock Hazard. Ground the neutral point on the power supply of drive models 2xxxE, BxxxE, and 4xxxE to
comply with the EMC Directive before you turn on the EMC filter or if there is high resistance grounding. If the EMC filter is
switched ON without the neutral point being grounded or if there is high resistance grounding, it can cause death or serious
injury.
WARNING! 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.
WARNING! 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.
Note:
• 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.
• 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.
Do not loop the grounding wire when connecting more than one drive.
Figure 3.14 Wiring More than One Drive
■ Wiring the Main Circuit Terminal Block
WARNING! Electrical Shock Hazard. Before you wire the main circuit terminals, make sure that MCCB and MC are OFF. If you
touch electrical equipment when MCCB and MC are ON, it can cause serious injury or death.
■ Main Circuit Configuration
WARNING! Fire Hazard. Do not connect a braking resistor to terminals +1 or -. Use terminals B1 and B2 for the braking resistor
connections. If you connect a braking resistor to the incorrect terminals, it can cause damage to the drive and braking circuit and
serious injury or death.
NOTICE: Do not use the negative DC bus terminal “-” as a ground terminal. This terminal is at high DC voltage potential.
Incorrect wiring connections can cause damage to the drive.
Note:
Drive model B018 does not have a built-in EMC filter.
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