Omron MX2 Series User Manual

2 Design
2 - 18
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
The diagram below shows the configuration of the inverter main circuit. The function of each peripheral
component is also described.
Power supply
Main Circuit Configuration Diagram
(a)
(b)
(c)
(d)
(e)
(f)
R S T
+
1
P/+
2
Inverter
RB
(g)
(i)
(h)
(h)
N/−
U V W
(j)
(f)
M
MCCB
MC
Name
Function
(a) (b) (c)
Refer to Recommended Cable Size, Wiring
Device, and Crimp Terminal on page 2-22.
(d) AC reactor
This is used as a harmonic suppression mea-
sure. It also helps improve the power factor. The
AC reactor is used when the power supply volt-
age unbalance factor is 3% or more, the inverter
capacity is 500 kVA or more, or rapid change in
the power supply voltage occurs to reduce its
effect.
(e) Input noise filter
This filter reduces the conductive noise gener-
ated in the inverter and transmitted via wires.
Connect it to the primary side (input side) of the
inverter.
(f) Radio noise filter
The inverter in operation may cause noise
through the power supply wiring etc., which
could affect radio receivers or other equipment
nearby. This filter reduces such noise (radiated
noise).
(g) DC reactor
This reactor helps suppress harmonics gener-
ated by the inverter.
(h) Braking resistor
(i) Regenerative braking unit
These increase the amount of regenerative
energy absorption when the inverter applies
motor braking and are used to decrease the the
speed of an elevator or load with a large
moment of inertia.
All models of the 3G3MX2-EV2 Series
Inverter have built-in regenerative braking
processing circuit.
The Regenerative Braking Unit is necessary
only if a large braking torque is required and the
built-in regenerative braking processing circuit
cannot allow it.
(j) Output noise filter
This filter is installed between the inverter and
the motor to reduce the radiated noise emitted
from cables. It is used to reduce radio and tele-
vision interference and prevent meter and sen-
sor malfunction.

Omron MX2 Series Specifications

General

Cooling Method	Fan cooling
Output Frequency Range	0.1 to 400 Hz
Control Method	V/f control, Sensorless vector control
Protection Functions	Overcurrent, overvoltage, undervoltage, overload, overheating, short circuit
Communication Options	Modbus RTU
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Ambient Operating Temperature	-10°C to +50°C
Enclosure	IP20
Storage Temperature	-20°C to +65°C
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m
Power Supply Voltage	200-240V AC
Input Voltage	3-phase 200-240V AC