Mitsubishi Electric FR-A800, Instruction Manual

Page: 264 / 1042

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