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7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 23
The following shows the function block diagram of the vibration tough drive function.
The function detects machine resonance frequency and compares it with [Pr. PB13] and [Pr. PB15], and
resets a machine resonance frequency of a parameter whose set value is closer.
Filter Setting parameter Precaution
Parameter that is
reset with vibration
tough drive function
Machine resonance
suppression filter 1
PB01/PB13/PB14 The filter can be set automatically with
"Filter tuning mode selection" in [Pr.
PB01].
PB13
Machine resonance
suppression filter 2
PB15/PB16 PB15
Machine resonance
suppression filter 3
PB46/PB47
Machine resonance
suppression filter 4
PB48/PB49 Enabling the machine resonance
suppression filter 4 disables the shaft
resonance suppression filter.
Using the shaft resonance suppression
filter is recommended because it is
adjusted properly depending on the
usage situation.
The shaft resonance suppression filter is
enabled for the initial setting.
Machine resonance
suppression filter 5
PB50/PB51 Enabling the robust filter disables the
machine resonance suppression filter 5.
The robust filter is disabled for the initial
setting.
Command
pulse train
Command
filter
Encoder
Servo motor
PWM
M
Load
+
-
Machine
resonance
suppression
filter 1
[Pr. PB13] [Pr. PB15] [Pr. PB46]
Machine
resonance
suppression
filter 2
Machine
resonance
suppression
filter 3
Machine
resonance
suppression
filter 4
Machine
resonance
suppression
filter 5
Shaft
resonance
suppression
filter
Robust filter
[Pr. PB48]
[Pr. PB50]
[Pr. PB17]
[Pr. PB49] [Pr. PE41]
Updates the parameter
whose setting is the
closest to the machine
resonance frequency.
Vibration tough drive
Torque
ALM
(Malfunction)
WNG
(Warning)
MTTR
(During tough drive)
ON
OFF
[Pr. PF23 Vibration tough drive - Oscillation detection level]
Detects the machine resonance and reconfigures the filter automatically.
During tough drive (MTTR) is not turned on in the vibration tough drive function.
ON
OFF
ON
OFF
5 s