Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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5. Speed Control
5.7 Torque bias
1
2
3
4
5
6
7
8
9
10
• To input the X42 signal, set "42" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function to
a terminal, and to input the X43 signal, set "43".
When Pr.841 = "1025", the torque bias is 25%. When Pr.842 = "975", the torque bias is -25%. When Pr.843 = "925", the torque
bias is -75%.
NOTE
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
 Setting the torque bias amount using terminal 4 (Pr.840 ="1 or 2", Pr.847,
Pr.848)
• Calculate the torque bias from the load input to terminal 4 as shown in the following diagram, and then apply the torque
bias.
• To set the torque bias amount with a voltage input to terminal 4, set Pr.858 Terminal 4 function assignment = "6".
• The torque bias amount ( Pr.847 ) and gain amount ( Pr.848 ) when descending (reverse motor rotation when the Pr.840
setting is "1", forward motor rotation when the setting is "2") can be set in a range of 0% to 400%. When Pr.847 or
Pr.848 ="9999", the setting is the same for both descending and ascending ( C38 to C41 ).
*1 When the LX signal is ON, the torque bias amount when ascending is applied regardless of the motor rotation direction.
*2 In Pr.846 , set the input voltage/current at a balanced load in %, considering the full-scale value of the voltage input via terminal 4 as 100%.
Torque bias selection 1
(X42)
Torque bias selection 2
(X43)
Torque bias amount
OFF OFF 0%
ON OFF
Pr.841 -400% to +400% (Setting value: 600% to
1400%)
OFF ON
Pr.842 -400% to +400% (Setting value: 600% to
1400%)
ON ON
Pr.843 -400% to +400% (Setting value: 600% to
1400%)
Pr.840
setting
When ascending When descending
1
(Forward motor rotation) (Reverse motor rotation)
2
(Reverse motor rotation)
(Forward motor rotation)
Pr.267 setting Terminal 4 input Input voltage/current for the balanced load (Pr.846 = "50")
0 4 to 20 mA 20 mA × 50% = 10 mA
1 0 to 5 V 5 V × 50% = 2.5 V
2 0 to 10 V 10 V × 50% = 5 V
Torque command
terminal 4 gain
C40(Pr. 933)
Torque command
terminal 4 bias
C38(Pr. 932)
Voltage for max. load
C41(Pr. 933)
Input voltage for
the balanced load
Pr. 846
Terminal 4
input
Bias amount
C39(Pr. 932)
Voltage for max. load
C41(Pr. 933)
Input voltage for
the balanced load
Pr. 846
Bias amount
Terminal 4
input
Fall-time
torque bias
terminal 4
bias
Pr. 847
Fall-time
torque bias
terminal 4
gain
Pr. 848
C39(Pr. 932)
Torque command
terminal 4 gain
C40(Pr. 933)
Voltage for max. load
C41(Pr. 933)
Input voltage for
the balanced load
Pr. 846
Bias amount
Terminal 4
input
Torque command
terminal 4 bias
C38(Pr. 932)
C39(Pr. 932)
Voltage for max. load
C41(Pr. 933)
Input voltage for
the balanced load
Pr. 846
Bias amount
Terminal 4
input
Fall-time
torque bias
terminal 4
bias
Pr. 847
Fall-time
torque bias
terminal 4
gain
Pr. 848
C39(Pr. 932)