Setting The Torque Limit Level - Mitsubishi Electric 800 Series Instruction Manual (Function

5.4

Setting the torque limit level

Sensorless Vector Sensorless Sensorless Vector Vector
Limit the output torque not to exceed the specified value.
The torque limit level can be set in a range of 0% to 400%. The TL signal can be used to switch between two types of torque
limit.
The torque limit level can be selected by setting it with a parameter, or by using the analog input terminal (terminal 4). Also, the
torque limit levels of forward rotation (power driving/regenerative driving) and reverse rotation (power driving/regenerative
driving) can be set individually.
Pr. Name
22 Stall prevention operation
H500 level (Torque limit level)
157
OL signal output timer
M430
801
Output limit level
H704
Constant output range
803
torque characteristic
G210
selection
804 Torque command source
D400 selection
805 Torque command value
D401 (RAM)
806 Torque command value
D402 (RAM, EEPROM)
810 Torque limit input method
H700 selection
811
Set resolution switchover
D030
812 Torque limit level
H701 (regeneration)
813 Torque limit level (3rd
H702 quadrant)
814 Torque limit level (4th
H703 quadrant)
815
Torque limit level 2
H710
122
5. Speed Control
5.4 Setting the torque limit level
PM PM PM
Initial value
*1
150% / 200%
0 s
9999
0
0
1000%
1000%
0
0
9999
9999
9999
9999
Setting
range
Set the torque limit level as a percentage with regards to the rated
0% to 400%
torque as 100%.
Set the OL signal output start time at the activation of torque limit
0 to 25 s
operation.
9999 No OL signal output.
0% to 400% Set the torque current limit level.
The torque limit setting value is used for limiting the torque current
9999
level.
The torque rises in the low-
0
speed range.
The torque is kept constant in
1
the low-speed range.
The torque is kept constant in
2 the low-speed range. (The
torque current is limited.)
The torque is kept constant in
10
the low-speed range.
0 Torque command given by analog input via terminal 4
Torque limit by the parameter setting (Pr.805 or Pr.806)
1
(-400% to 400%)
3
Torque limit via communication
4 The internal torque limit 2 cannot be used
5
Torque limit via communication
6
600% to Writes the torque limit value in RAM. Regards 1000% as 0%, and
1400% set torque command by an offset of 1000%.
Writes the torque limit value in RAM and EEPROM.
600% to
Regards 1000% as 0%, and set torque command by an offset of
1400%
1000%.
0 Internal torque limit 1 (torque limited by parameter settings)
1 External torque limit (torque limited by terminal 4)
2
Internal torque limit 2 (torque limited via communication)
0 Torque limit setting increments 0.1%
10 Torque limit setting increments 0.01%
0% to 400% Set the torque limit level for forward rotation regenerative driving.
9999 Limit using Pr.22 or the analog terminal values.
0% to 400% Set the torque limit level for reverse rotation power driving.
9999 Limit using Pr.22 or the analog terminal values.
0% to 400% Set the torque limit level for reverse rotation regenerative driving.
9999 Limit using Pr.22 or the analog terminal values.
When the torque limit selection (TL) signal is ON, Pr.815 is the
0% to 400%
torque limit value regardless of Pr.810.
9999 The torque limit set to Pr.810 is valid.
Description
The motor power output is
limited to be constant in the
constant power range.
The torque is limited to be
constant in the constant power
range.
The torque is limited to be
constant in the constant power
range unless the output limit of
the torque current is reached.
(The torque current is limited.)
The motor power output is
limited to be constant in the
constant power range.
*2
*2
*2