20
Wiring
Chapter 2-2
Connecting Input
Power Supply to the
Terminal Block
Input power supply can be connected to any terminal on the terminal block
because the phase sequence of input power supply is irrelevant to the phase
sequence (R/L1, S/L2, and R/L3).
Installing an AC Reactor
If the Inverter is connected to a large-capacity power transformer (660 kW or
more) or the phase advance capacitor is switched, an excessive peak current
may flow through the input power circuit, causing the converter unit to break
down.
To prevent this, install an optional AC reactor on the input side of the Inverter.
This also improves the power factor on the power supply side.
Installing a
Surge Absorber
Always use a surge absorber or diode for the inductive loads near the Inverter.
These inductive loadsinclude magnetic contactors, electromagnetic relays,
solenoid valves, solenoid, and magnetic brakes.
Installing a Noise Filter
on the Power Supply Side
The Inverter’s outputs uses high-speed switching, so noise may be
transmitted from the Inverter to the power line and adversely effect other
devices in the vicinity. It is recommended that a Noise Filter be installed at the
Power Supply to minimize noise transmission. Noise will also be reduced from
the power line to the Inverter.
Wiring Example 1
Note
Use a Noise Filter designed for the Inverter. A general-purpose Noise Filter
will be less effective and may not reduce noise.
Power
supply
Input Noise Filters
EMC-conforming Input Noise Filter: 3G3JV-PFI
_
Noise
Filter
VARISPEED
Programmable
Controller
CIMR-J7AZ
MCCB
MCCB
Содержание J7 series
Страница 12: ...XII...
Страница 15: ...1 CHAPTER 1 Overview 1 1 Function 2 1 2 Nomenclature 3...
Страница 47: ...33 CHAPTER 3 Preparing for Operation and Monitoring 3 1 Nomenclature 34 3 2 Outline of Operation 35...
Страница 54: ...40 Outline of Operation Chapter 3 2...
Страница 102: ...88 Other Functions Chapter 6 7...
Страница 158: ...144 Option Specifications Chapter 9 3...
Страница 159: ...145 CHAPTER 10 List of Parameters List of Parameters 146...
Страница 172: ...158 List of Parameters Chapter 10...
Страница 173: ...159 CHAPTER 11 Using the Inverter for a Motor Using the Inverter for a Motor 160...