Omron MX2 Series User Manual

5 Basic Settings
5 - 18
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
⚫ Constant torque characteristics
Use the torque characteristics setting for dedicated inverter motors.
Dedicated inverter motors are designed to prevent degradation of the cooling effect that arises as
the motor speed increases, except at 5 Hz or less.
For constant torque characteristics, the reduction factor is not defined for frequencies of 5 Hz or
more.
Specifically, the following reduction factor is applied to the current value set in the 1st/2nd Electronic
Thermal Level (b012/b212) to calculate a reduced current value, which is equivalent to 100% of the
basic characteristics.
Reduction Factor Characteristics
⚫ Examples of actual electronic thermal characteristics
Under the following four conditions, electronic thermal characteristics are shown in the graph below,
where the reduction factor at 20 Hz is 0.8 according to the reduction factor in the reduced torque
characteristics, which is reflected on the basic electronic thermal characteristics.
• 1st Electronic Thermal Level (b012) is set to 60 A.
• 1st Electronic Thermal Characteristics Selection (b013) is set to 00 (Reduced torque characteris-
tics).
• 1st Base Frequency (A003) is set to 60 Hz.
• 20-Hz output frequency is output (Reduction factor: 0.8)
Overload detection time [s]

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