Mitsubishi Electric MELSEC iQ-R RD78G4 - Smoothing Method for Clutch

4 ADVANCED SYNCHRONOUS CONTROL
4.3 Clutch
113
4
Smoothing method for clutch
Set the clutch smoothing method in "[Pr.411] Main shaft clutch smoothing method" and "[Pr.428] Auxiliary shaft clutch
smoothing method".
The 2 types of clutch smoothing include the following.
• Time constant method smoothing
• Slippage method smoothing
When not using clutch smoothing, set "0: Direct" in the clutch smoothing method.
The operation of each smoothing method is shown below.
Time constant method smoothing
Smoothing is processed with the time constant setting value in the smoothing time constant at clutch ON/OFF. After clutch ON
smoothing is complete, smoothing is processed with the time constant setting value when the speed of the input values
changes.
The movement amount between the clutch turning ON and OFF is not changed with smoothing.
Movement amount after clutch smoothing = Movement amount before clutch smoothing
■Time constant method exponential curve smoothing
Set "1: Time constant method (Exponential)" in the clutch smoothing method.
Item Setting item Setting details/Setting value
Main shaft clutch Auxiliary shaft clutch
Clutch smoothing
method
[Pr.411]
Main shaft clutch smoothing
method
[Pr.428]
Auxiliary shaft clutch
smoothing method
• Set the clutch smoothing method.
■Set in decimal.
0: Direct
1: Time constant method (Exponent)
2: Time constant method (Linear)
3: Slippage method (Exponent)
4: Slippage method (Linear)
5: Slippage method (Linear: Input value follow up)
Item Setting item Setting details Setting value
Main shaft clutch Auxiliary shaft clutch
Clutch smoothing
time constant
[Pr.412]
Main shaft clutch smoothing
time constant
[Pr.429]
Auxiliary shaft clutch
smoothing time constant
• For smoothing with a time
constant method, set the
smoothing time constant.
■Set in decimal.
0 to 5000[ms]
Item Main shaft clutch Auxiliary shaft clutch
Clutch ON/OFF status [Md.420] Main shaft clutch ON/OFF status [Md.423] Auxiliary shaft clutch ON/OFF status
Clutch smoothing status [Md.421] Main shaft clutch smoothing status [Md.424] Auxiliary shaft clutch smoothing status
t
t
63%
63%
Speed after clutch smoothing
Clutch smoothing time constant
Clutch ON/OFF status
Clutch smoothing status
Speed before clutch
processing