8.1 Type of Adjustments and Basic Adjustment Procedure
8-13
The following example outlines how the maximum limit for position deviation is calculated. These conditions
apply.
• Maximum speed = 6000
• Encoder resolution = 131072 (17 bits)
•PnAC6 = 400
•
Under these conditions, the following equation is used to calculate the maximum limit (Pn520).
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
Related Alarm
(3) Vibration Detection Function
Set the vibration detection function to an appropriate value with the vibration detection level initialization. For
details on how to set the vibration detection function, refer to 9.10 Vibration Detection Level Initialization.
Pn520 =
327680 × 2
655360
×
6000
60
131072
400/10
×× 2
1
1
=
=
Pn520
Excessive Position Error Alarm Level
Classifica-
tion
Setting Range Setting Unit Factory Setting When Enabled
1 to 1073741823 1 reference unit 5242880 Immediately Setup
Alarm
Display
Alarm Name Meaning
A.d00 Position Error Overflow Position errors exceeded parameter Pn520.
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