Torque Limit Function - Omron SYSDRIVE MX2 SERIES User Manual

5-11 Sensorless Vector Control

Torque Limit Function

This function limits the motor output torque. This function is enabled only when Sensorless
Vector Control is selected for control method (A044/A244 = 03).
You can select any of the following 3 torque limit functions from Torque Limit Selection (b040).
Four-quadrant separate setting mode
In this mode, torque limits are set separately for the four quadrants of forward power running, forward
regeneration, reverse power running and reverse regeneration, using Torque Limits 1 to 4 (b041 to b044).
Terminal switching mode
In this mode, the values set in Torque Limits 1 to 4 (b041 to b044) are switched based on the combination
of torque limit switching terminals 1 and 2 (TRQ1,TRQ2) which are set using multi-function input terminals.
Selected torque limit values are enabled for all operation modes.
Analog input mode
In this mode, the torque limits are set based on the voltage applied to the FV terminal (analog
voltage) on the control terminal block.
0 to 10 V correspond to torque limit values of 0% to 200%. Selected torque limit values are
enabled for all operation modes.
If the Torque limit enabled function (40: TL) is set to a multi-function input terminal, the torque
limit function set in b040 is enabled only when TL is turned ON. When TL is off, the torque limit
setting is disabled, and the maximum value is defined as the torque limit value. If the Torque
5
limit enabled function (40: TL) is not set to a multi-function input terminal, the torque limit
function set in Torque Limit Selection (b040) is always enabled.
The torque limit value under this function assumes that the torque corresponding to the
Inverter's rated current is 100%. Accordingly, the absolute value of torque varies depending on
the motor to be combined.
When the Torque limit (10: TRQ) is selected in the multi-function output selection, the torque
limit signal turns on when the above torque limit function is activated.
Parameter
b040
b041
b042
b043
b044
C001 to
C007
C021 to
C022
C026
5-153
Function name
No.
Torque Limit
Selection
Torque Limit 1
(Four-quadrant Mode
Forward Power Running)
Torque Limit 2
(Four-quadrant Mode
Reverse Regeneration)
Torque Limit 3
(Four-quadrant Mode
Reverse Power Running)
Torque Limit 4
(Four-quadrant Mode
Forward Regeneration)
Multi-function
Input Selection
Multi-function Output
Terminal Selection
Multi-function Relay
Output Function Selection
Data
00: Four-quadrant separate setting
01: Terminal switching
02: Analog voltage input
0 to 200/no (Disabled)
Forward power running under four-
quadrant separate setting
0 to 200/no (Disabled)
Reverse regeneration under four-
quadrant separate setting
0 to 200/no (Disabled)
Reverse power running under four-
quadrant separate setting
0 to 200/no (Disabled)
Forward regeneration under four-
quadrant separate setting
40: TL (Torque limit enabled/disabled)
41: TRQ1 (Torque limit switching 1)
42: TRQ2 (Torque limit switching 2)
10: TRQ (During Torque limit)
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Default
Unit
setting
−
00
200. %
200. %
200. %
200. %
− −
− −