8.3 Precautions to Ensure Safe Tuning
8.3.2 Setting the Position Deviation Overflow Alarm Level
8-6
If you set a value that satisfies the formula, an A.D00 alarm (Position Deviation Overflow) should
not occur during normal operation.
If the Servomotor operation does not agree with the reference, position deviation will occur, an
error will be detected, and the motor will stop.
The following calculation example shows how to calculate the value of Pn520 based on the fol-
lowing values for Pn102, Pn210, and Pn20E. The example uses a Servomotor with a maximum
motor speed of 6,000 and an encoder resolution of 1,024 (10 bits).
Pn102 is set to 400.
Therefore,
If the acceleration/deceleration rate required for the position reference exceeds the tracking
capacity of the Servomotor, the tracking delay will increase and the position deviation will no
longer satisfy the above formulas. If this occurs, lower the acceleration/deceleration rate so
that the Servomotor can follow the position reference or increase the position deviation over-
flow alarm level.
Related Parameters
Related Alarms
Pn520
Position Deviation Overflow Alarm Level
Setting Range Setting Unit Default Setting When Enabled Classification
1 to 1,073,741,823 1 reference unit 25,600 Immediately Setup
Alarm Number Alarm Name Alarm Meaning
A.D00
Position Deviation
Overflow Alarm
This alarm is displayed when the position deviation exceeds the set-
ting of Pn520 (Position Deviation Overflow Alarm Level).
Pn520 =
2,560 2
2
6,000
60
1,024
400/10
1
1
=
=
5,120
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