Control By Monitoring The Switching Speed Through The Servopack's Speed Feedback - YASKAWA E-V-SD Series User Manual

3.
The high-speed winding request (SVCMD_IO.WND_CHG = 0) and high-speed winding gain
selection (SVCMD_IO.G-SEL) are specified simultaneously.
The SERVOPACK performs the winding selection sequence,
SVCMD_IO.WND_MOD = 0 after execution of the winding selection operation has been completed.
∗
The SERVOPACK receives the winding selection signal and starts the selection sequence if any changes are
detected.
After entering the SV_OFF state and a base block is set, the output to the magnetic contactor for winding selec-
tion is changed to high-speed winding after 10 ms.
In the control section, load the gain settings for the selected G-SEL and set for high-speed winding.
Make sure that the magnetic contactor for winding selection is actually set for high-speed winding.
This removes the base block and changes to the SV_ON state.
4.
The host controller checks the high-speed winding state (SVCMD_IO.WND_MOD = 0) from the
SERVOPACK.
5.
The speed of the specified S reference is output and a check is made to see if the speed
matches (SVCMD_IO.V_CMP = 1).
This concludes the process for winding selection with M42.
• Winding Selection Speed Control with M41
1.
When an M41 S reference is specified, the speed of the S reference is specified without
performing winding selection if the S reference is larger than the switching speed.
However, if the S reference is smaller than the switching speed, the speed of the S reference is specified
as-is.
2.
The host controller checks to confirm that the speed matches (SVCMD_IO.V_CMP = 1).
3.
The low-speed winding request (SVCMD_IO.WND_CHG = 1) and low-speed winding gain
selection (SVCMD_IO.G-SEL) are executed simultaneously.
The SERVOPACK performs the winding selection sequence, and then returns SVCMD_IO.WND_MOD
= 1 after execution of the winding selection operation has been completed.
4.
The host controller checks the low-speed winding state (SVCMD_IO.WND_MOD = 1) from the
SERVOPACK.
This concludes the process for winding selection with M41.
Note: The speed reference is a step reference with an acceleration of ACCR (the maximum acceleration rate).
Set the hysteresis for the detection of the switching speed.
5.6.7 Control by Monitoring the Switching Speed through the SERVOPACK's
Speed Feedback
This section describes how to automatically perform winding selection by only monitoring the speed feedback
received from the MECHATROLINK to determine the motor's actual speed.
Winding Selection Sequence
SVCMD_IO.WND_CHG
Selection processing (Servo driver processing)
SVCMD_IO.WND_MOD
Speed reference
The procedure for the operating sequence of the above time chart is as follows:
• Changing from Low-speed Winding at 500 min
1.
If an S reference is specified for the current winding, the speed of the S reference is executed.
2.
The speed feedback (FSPD) is read from the SERVOPACK and a check is made to confirm that
it is higher than the switching speed + ΔS.
S2000
500 min -1
0
Speed
∆S
0
-1
*
and then returns
S500
2000 min -1
∆S
to High-speed Winding at 2,000 min
5.6 Winding Selection
500 min -1
-1
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