Omron SYSDRIVE 3G3HV SERIES User Manual

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D Installing a Noise Filter on the Power Supply Side
The Inverter ’ s outputs utilize high-speed switching, so noise may be transmitted from the Inverter to the
power line and adversely affect other devices in the vicinity. It is recommended that a Noise Filter be
installed at the Power Supply to minimize this noise transmission. Conversely, noise can also be re-
duced from the power line to the Inverter.
Wiring Example 1
Power
supply
3G3HV
SYSDRIVE
SYSMAC or
other control
device
Noise
Filter
Input Noise Filters
Simple Input Noise Filter: 3G3EV-PLNFDj
Input Noise Filter: 3G3IV-PFNj
EMC-conforming Input Noise Filter: 3G3FV-PFSj
Note Use a noise filter designed for Inverters. A general-purpose noise filter will be less ef fective and
may not reduce noise.
D Calculating the Inverter’s Input Power Supply Capacity
The power supply capacity for the Inverter can be calculated in the way shown below. The value
obtained should only be as a reference; allow for some degree of variation.
Input
power supply capacity (kV A) = Motor output (kW)/(Motor ef ficiency × Inverter ef ficiency × Inverter
input power factor)
Motor efficiency = 0.8 (typ.)
Inverter efficiency = 0.9 (typ.)
Inverter input power factor = 0.65 to 0.9
Note The Inverter’s input power factor varies with the impedance. If an AC reactor is used, take the
value to be 0.9, and if an AC reactor is not used, take the value to be 0.65.
To
calculate the input current, divide the input power supply capacity obtained above by the input volt -
age.
The Inverter has an overload capacity of 150%, and so set to a value 1.5 times the result of this
calculation.
Example: 3-phase 200-V: 1.5 × Input power supply capacity/(√3 × 200 V)
Single-phase 200-V: 1.5 × Input power supply capacity/200 V
D Setting the Power Supply Voltage Short Pin (400-V Class Inverters of 18.5 kW or
More)
Set the power supply voltage short pin for 400-V Class Inverters with a capacity of 18.5 kW or more.
Short Pin Setting Procedure
1. Turn OFF the power supply and wait for at least one minute (three minutes for Inverters of 30 kW or
more) before removing the front panel.
Installation Chapter 2

Omron SYSDRIVE 3G3HV SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3HV SERIES
Category	Inverter
Language	English