YASKAWA SGDV User Manual page 160

Under these conditions, the following equation is used to calculate the maximum limit (Pn520).
6000 131072
Pn520 = ×
60 400/10
= 327680 × 2
655360
=
If the acceleration/deceleration of the position reference exceeds the capacity of the servomotor, the servomo-
tor cannot perform at the requested speed, and the allowable level for position error will be increased as not to
satisfy these equations. If so, lower the level of the acceleration/deceleration for the position reference so that
the servomotor can perform at the requested speed or increase the excessive position error alarm level
(Pn520).
Related Parameter
Excessive Position Error Alarm Level
Pn520
Setting Range
1 to 1073741823
Related Alarm
Alarm
Alarm Name
Display
A.d00 Position Error Overflow
(4) Vibration Detection Function
Set the vibration detection function to an appropriate value with the vibration detection level initialization
(Fn01B). For details on how to set the vibration detection function, refer to 7.15 Vibration Detection Level
Initialization (Fn01B).
(5) Excessive Position Error Alarm Level at Servo ON (Pulse Train Reference)
If position errors remain in the error counter when turning ON the servomotor power, the servomotor will
move and this movement will clear the counter of all position errors. Because the servomotor will move sud-
denly and unexpectedly, safety precautions are required. To prevent the servomotor from moving suddenly,
select the appropriate level for the excessive position error alarm level at servo ON (Pn526) to restrict opera-
tion of the servomotor.
Related Parameters
Excessive Position Error Alarm Level at Servo ON
Pn526
Setting Range
1 to 1073741823
Excessive Position Error Warning Level at Servo ON
Pn528
Setting Range
10 to 100
Speed Limit Level at Servo ON
Pn529
Setting Range
0 to 10000
1
× × 2
1
Setting Unit Factory Setting
1 reference unit
Position errors exceeded parameter Pn520.
Setting Unit Factory Setting
1 reference unit
Setting Unit Factory Setting
1%
Setting Unit Factory Setting
-1
1 min
6.1 Type of Adjustments and Basic Adjustment Procedure
Position
When Enabled
5242880 Immediately
Meaning
Position
When Enabled
5242880 Immediately
Position
When Enabled
100 Immediately
Position
When Enabled
10000 Immediately
Classification
Setup
Classification
Setup
Classification
Setup
6
Classification
Setup
6-9