Omron MX2 Series User Manual

6 Vector Control and Applied Functions
6 - 12
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
6-2 Torque Limit Function
6-2-1 Torque Limit Function Settings
Use the torque limit function to limit the output torque of motor.
This function is enabled only when the 1st/2nd Control Method (A044/A244) is set to 03 (Sensorless
vector control).
• The Torque Limit Selection (b040) provides four modes as shown below.
Mode
Description
Four-quadrant separate
setting mode (b040 = 00)
Use this mode to set the four-quadrant (Forward Power Running, Reverse Regen-
eration, Reverse Power Running, and Forward Regeneration) torque limits in the
Torque Limit 1 to 4 (b041 to b044).
Terminal switching mode
(b040 = 01)
Use this mode to switch the Torque Limit 1 to 4 (b041 to b044) setting based on
the combination of the torque limit switching functions 1 and 2 (TRQ1 and TRQ2)
allocated to multi-function input terminals.
The selected torque limit value is enabled for all RUN modes.
Analog input mode
(b040 = 02)
Use this mode to set the torque limit value based on the analog voltage applied to
the terminal O of the control circuit terminal block.
0 to 10 V is equivalent to the torque limit value of 0% to 200%. The torque limit
value set via the analog input terminal is enabled for all RUN modes.
Option mode (b040 = 03)
Use this mode to set the torque limit value from optional equipment. At present,
OMRON provides no options that support this mode.
• Setting one of the Multi-function Input 1 to 7 Selection (C001 to C007) to 40 (TL: Torque limit
enabled) enables the torque limit function set in the Torque Limit Selection (b040) only when the ter-
minal TL is input.
When this terminal is reset, the torque limit setting is disabled and the inverter uses the maximum
value (200%) as the torque limit value.
When the Torque limit enabled (TL) function is not allocated to any of the multi-function input termi-
nals, the torque limit function set in the Torque Limit Selection (b040) is always enabled.
• The torque limit function regards the torque value equivalent to the rated output current of the inverter
as 100%.
To convert it to the rated motor torque ratio, use the following formula:
Rated motor torque ratio = [Torque limit set value]  [Rated output current of Inverter] / [Rated
motor current]
• When the Multi-function Output 11/12 Selection (C021/C022), or Multi-function Relay Output (AL1,
AL2) Function Selection (C026) is set to 10 (TRQ: Torque limit), you can check if the torque limit
func- tion is activated with the status of the torque limit signal.
Parameter No.
Function name
Data
Default
data
Unit
b040
Torque Limit Selection
00: Four-quadrant separate setting
01: Terminal switching
02: Analog voltage input
03: Option (No applicable Option)
00
−
b041
Torque Limit 1
(Four-quadrant Mode For-
ward Power Running)
0. to 200.
255: no (Torque limit disabled)
Forward Power Running torque limit
when b040 = 00
200.
%

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