Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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5. Speed Control
5.7 Torque bias
5.7
Torque bias
The torque bias function can be used to make the starting torque start-up faster. At this time, the motor starting torque can be
adjusted with a contact signal or analog signal.
 Block diagram
 Setting the torque bias amount using contact input (Pr.840 = "0", Pr.841
to Pr.843)
• Select the torque bias amount shown in the following table using the corresponding contact signal combination.
Sensorless Sensorless Sensorless Vector Vector Vector
Pr. Name Initial value
Setting
range
Description
840
G230
Torque bias selection 9999
0
Set the torque bias amount using contact signals (X42, X43) in Pr.841
to Pr.843 .
1
Set the torque bias amount using terminal 4 in any of C38 to C41 .
(When the squirrel cage rises during forward motor rotation.)
2
Set the torque bias amount using terminal 4 in any of C38 to C41 .
(When the squirrel cage rises during reverse motor rotation.)
3
The torque bias amount using terminal 4 can be set automatically in
C38 to C41 and Pr.846 according to the load.
9999 No torque bias, rated torque 100%
841
G231
Torque bias 1
9999
600% to
999%
Negative torque bias amount (-400% to -1%)
842
G232
Torque bias 2
1000% to
1400%
Positive torque bias amount (0% to 400%)
843
G233
Torque bias 3 9999 No torque bias setting
844
G234
Torque bias filter 9999
0 to 5 s The time until the torque starts up.
9999 The same operation as 0 s.
845
G235 Torque bias operation
time
9999
0 to 5 s The time for retaining the torque of the torque bias amount.
9999 The same operation as 0 s.
846
G236 Torque bias balance
compensation
9999
0% to 100%
Set the input voltage/current at a balanced load in %, considering the
full-scale value of the voltage input via terminal 4 as 100%.
9999 The same operation as 0 V. (Fixed to 0 V/0%.)
847
G237 Fall-time torque bias
terminal 4 bias
9999
0% to 400% The bias value setting in the torque command.
9999
The same as (C38, C39 (Pr.932)) when ascending
848
G238 Fall-time torque bias
terminal 4 gain
9999
0% to 400% The gain value setting in the torque command.
9999
The same as (C40, C41 (Pr.933)) when ascending
Speed command
Torque bias
selection 1
Torque bias
selection 2
[ Pr. 846 ]
C38, C39
[ Pr. 932 ]
C40, C41
[ Pr. 933 ]
Internal parameters
[ Pr. 841 ]
[ Pr. 842 ]
[ Pr. 843 ]
Speed command
CW Cage
CW > Cage
[ Pr. 840 = 1, 2, 3] [ Pr. 840 = 0]
Speed
control
P gain
Torque
control
IM
PLG
CW
Cage
Load
detector
Terminal 4
-
+
-
+
X42
X43
SD
[ Pr. 826 ]
Torque setting filter 1
+
[ Pr. 845 ]
Speed
control
integral time
+
0
Integration cleared to 0
+
+
Torque limit