Operation Diagrams - Mitsubishi Electric FR-V500 Instruction Manual

Torque biases (Pr. 840 to Pr. 848)
(1) Parameter details
1) Pr. 840 "torque bias selection"
Select the setting method of the torque bias amount.
Pr. 840 Setting
0 Set the torque bias amount based on the contact signals (DI1 to DI4) in Pr. 841 to Pr. 843.
To raise the cage when the motor runs in forward rotation direction.
1
Set the terminal 3-based torque bias amount as desired in Pr. 904 and Pr. 905.
To raise the cage when the motor runs in reverse rotation direction.
2
Set the terminal 3-based torque bias amount as desired in Pr. 904 and Pr. 905.
The terminal 3-based torque bias amount can be set automatically in Pr. 904, Pr. 905 and Pr. 846
3
according to the load.
9999 No torque bias
<Operation diagrams>
• When Pr. 840 = 0
Set the torque bias values (Pr. 841 to Pr. 843) in the following table according to the combination of the contact
signals (DI1 to DI4).
Torque Bias Selection 1
(X42 Terminal)
OFF
ON
OFF
ON
(Example) 25% when Pr. 841 = 1025, -25% when Pr. 842 = 975, -75% when Pr. 843 = 925
• When Pr. 840 = 1
Calculate the torque bias from the analog input value of the terminal 3 as shown below and set the gain and bias
(Pr. 904, Pr. 905) of the torque command.
Rise (Motor Forward Rotation)
Torque
command
terminal 3 gain,
Pr. 905
Torque
command
terminal 3 bias,
Pr. 904
• When Pr. 840 = 2
Rise (Motor Reverse Rotation)
Torque
command
terminal 3 bias,
Pr. 904
Torque
command
terminal 3 gain,
Pr. 905
Torque Bias Selection 2
(X43 Terminal)
Bias amount (Pr. 841, Pr. 842, Pr. 843)
Terminal 3
input
Voltage for
max. load
Voltage for
balanced load
Pr.846
Bias amount (Pr. 841, Pr. 842, Pr. 843)
Voltage for
balanced load
Pr.846
Voltage for
max. load
Terminal 3
input
Description
OFF No selection
Pr.841 1000 to 1400%: Positive value
OFF
Pr.842 1000 to 1400%: Positive value
ON
Pr.843 1000 to 1400%: Positive value
ON
Fall (Motor Reverse Rotation)
Bias amount (Pr. 841, Pr. 842, Pr. 843)
Fall-time
torque bias
terminal 3 gain,
Pr. 848
Fall-time
torque bias
Voltage for
terminal 3 bias,
balanced load
Pr. 847
Pr.846
Fall (Motor Forward Rotation)
Bias amount (Pr. 841, Pr. 842, Pr. 843)
Voltage for
Fall-time
balanced load
torque bias
Pr.846
terminal 3 gain,
Pr. 847
Fall-time
torque bias
terminal 3 bias,
Pr. 848
178
Torque Bias (Pr. 841 to Pr. 843)
600 to 999%: Negative value
600 to 999%: Negative value
600 to 999%: Negative value
Terminal 3
input
Voltage for
max. load
Voltage for
max. load
Terminal 3
input