Setting The Torque Limit Level - Mitsubishi Electric FR-A820-00046 Instruction Manual

Speed control under Real sensorless vector control, vector control, PM sensorless vector control
5.3.4

Setting the torque limit level

During speed control under Real sensorless vector control, vector control, and PM sensorless vector
control, and during position control under vector control and PM sensorless vector control, the out-
put torque is limited to prevent it from exceeding a 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 analog input termi-
nals (terminals 1, 4). Also, the torque limit levels of forward rotation (power driving/regenerative driv-
ing) and reverse rotation (power driving/regenerative driving) can be set individually.
Pr.
22
H500
157
M430
803
G210
804
D400
805
D401
806
D402
810
H700
811
D030
812
H701
5 - 84
Name
150/200%
Stall prevention operation
level (Torque limit level)
OL signal output timer
Constant output range
torque characteristic
selection
Torque command source
selection
Torque command value
(RAM)
Torque command value
(RAM, EEPROM)
Torque limit input method
selection
Set resolution switchover
Torque limit level
(regeneration)
Sensorless Vector Sensorless Sensorless Vector Vector PM PM PM
Initial Setting
Description
value range
Set the torque limit level in percentage with regards
0 to 400%
to the rated torque as 100%.
Set the OL signal output start time at the activation of
0 to 25 s
torque limit operation.
0 s
9999 No OL signal output
Torque rise in low-speed
0
range
Constant torque in low-
1
speed range
0
Constant torque in low-
10
speed range
Torque rise in low-speed
11
range
0 The internal torque limit 2 cannot be used.
Torque limit (–400% to 400%) by the parameter
1
setting (Pr. 805 or Pr. 806)
Torque limit via CC-Link communication
3
0
(FR-A8NC/FR-A8NCE)
4 The internal torque limit 2 cannot be used.
5
Torque limit via CC-Link communication
(FR-A8NC/FR-A8NCE)
6
Writes the torque limit value in RAM.
600 to
1000% Regards 1000% as 0%, and set torque command by
1400%
an offset of 1000%.
Writes the torque limit value in RAM and EEPROM.
600 to
1000% Regards 1000% as 0%, and set torque command by
1400%
an offset of 1000%.
Internal torque limit 1
0
(Torque limited by parameter settings.)
External torque limit
0 1
(Torque limited by terminals 1 and 4.)
Internal torque limit 2
2
(Torque limited by communication options)
Speed setting, running
0 speed monitor
increments 1 r/min
Speed setting, running
1 speed monitor
increments 0.1 r/min
0
Speed setting, running
10 speed monitor
increments 1 r/min
Speed setting, running
11 speed monitor
increments 0.1 r/min
Set the torque limit level for forward rotation
0 to 400%
regenerative driving.
9999
9999 Limit using Pr. 22 or the analog terminal values.
Parameters
In constant-power range,
constant motor output
limit
In constant-power range,
constant torque limit
In constant-power range,
constant motor output
limit
In constant-power range,
constant torque limit
Torque limit setting
increments 0.1%
Torque limit setting
increments 0.01%