Setting Motor Overload Detection Level - YASKAWA Sigma-V Series User Manual

4.3.7 Setting Motor Overload Detection Level

In the multi-winding drive unit, the detection timing of the warnings and alarms can be changed by changing
how to detect an overload warning (A.910) and overload (low load) alarm (A.720).
The overload characteristics and the detection level of the overload (high load) alarm (A.710) cannot be
changed.
(1) Changing Detection Timing of Overload Warning (A.910)
The overload warning level is set by default to 20% so that an overload warning is detected in 20% of the time
required to detect an overload alarm. The time required to detect an overload warning can be changed by
changing the setting of the overload warning level (Pn52B). This protective function enables the warning out-
put signal (/WARN) to serve as a protective function and to be output at the best timing for your system.
The following graph shows an example of the detection of an overload warning when the overload warning
level (Pn52B) is changed from 20% to 50%. An overload warning is detected in half of the time required to
detect an overload alarm.
Overload detection time
Note: Refer to SERVOPACK Overload Characteristics in the multi-winding drive system catalog for details.
Overload Warning Level
Pn52B
Setting Range
Detection curve of
overload warning when
Pn52B = 50%
100%
Setting Unit
1 to 100 1%
Rotation
Detection curve of
overload alarm
Detection curve of overload warning
when Pn52B = 20% (factory setting)
Torque reference [%]
200%
Position
Speed
Factory Setting When Enabled
20 After restart
4.3 Basic Functions Settings
Torque
Classification
Setup
4-21
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