2.2 External Wiring
Power Supply
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| FUSE/NFB |
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| Magnetic |
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| contactor |
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| Input AC |
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| Line Reactor |
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| Reactor |
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| EMI Filter |
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R/L1 | S/L2 | T/L3 | +1 |
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| DC | |
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| Choke | |
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| +2 | BR Brake resistor |
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| VF DB | |
U/T1 | V/T2 |
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W/T3 |
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| Reactor |
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| Output AC |
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| Line Reactor |
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| Motor |
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| Chapter 2 Installation and Wiring |
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Items | Explanations |
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Power | Please follow the specific power | ||||
supply requirements shown in | |||||
supply | |||||
Appendix A. |
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| There may be an inrush current during | ||||
Fuse/NFB | power up. Please check the chart of | ||||
Appendix B and select the correct fuse | |||||
(Optional) | |||||
with rated current. Use of an NFB is | |||||
| optional. |
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Magnetic | Please do not use a Magnetic | ||||
contactor as the I/O switch of the AC | |||||
contactor | |||||
motor drive, as it will reduce the | |||||
(Optional) | |||||
operating life cycle of the AC drive. | |||||
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| Used to improve the input power | ||||
| factor, to reduce harmonics and | ||||
| provide protection from AC line | ||||
| disturbances (surges, switching | ||||
Input AC | spikes, short interruptions, etc.). AC | ||||
Line Reactor | line reactor should be installed when | ||||
(Optional) | the power supply capacity is ≧500kVA | ||||
| or phase lead reactor will be switched. | ||||
| And the mains wiring distance ≤ 10m. | ||||
| Please refer to Appendix B for more | ||||
| details. |
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| Zero phase reactors are used to | ||||
reduce radio noise especially when | |||||
audio equipment is installed near the | |||||
Reactor | |||||
inverter. Effective for noise reduction | |||||
(Ferrite Core | |||||
Common | on both the input and output sides. | ||||
Attenuation quality is good for a wide | |||||
Choke) | |||||
range from AM band to 10MHz. | |||||
(Optional) | |||||
Appendix B specifies the zero phase | |||||
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| reactor. (RF220X00A) |
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EMI filter | To reduce electromagnetic | ||||
interference, please refer to Appendix | |||||
(Optional) | |||||
B for more details. | |||||
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Brake | Used to reduce the deceleration time | ||||
of the motor. Please refer to the chart | |||||
Resistor | |||||
in Appendix B for specific Brake | |||||
(Optional) | |||||
Resistors. | |||||
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Output AC | Motor surge voltage amplitude | ||||
depends on motor cable length. For | |||||
Line Reactor | applications with long motor cable | ||||
(Optional) | (>20m), it is necessary to install a | ||||
| reactor at the inverter output side. | ||||
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Revision July 2008, EG03, SW V1.06 |
