YASKAWA Sigma-7 SGD7S Series

Overload
detection time
Detection curve for
overload warnings
when Pn52B = 50%
Detection curve for overload alarms
Detection curve for overload warnings
when Pn52B = 20% (default setting)
Torque reference (%)
200%100%
Fig. 123: Detection Timing for Overload Warnings (A.910)
Overload Warning Level
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn52B 1 to 100 1% 20 Immediately Setup
(applies to Speed Control, Position Control and Torque Control)
6.14.3 Detection Timing for Overload Alarms (A.720)
If Servomotor heat dissipation is insufficient (e.g., if the heat sink is too small), you can
lower the overload alarm detection level to help prevent overheating.
To reduce the overload alarm detection level, change the setting of Pn52C (Base Current
Derating at Motor Overload Detection).
Base Current Derating at Motor Overload Detection
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn52C 10 to 100 1% 100 After restart Setup
(applies to Speed Control, Position Control and Torque Control)
An A.720 alarm (Continuous Overload) can be detected earlier to protect the Servomotor
from overloading.
Overload
detection time
50% 100%
A.720
A.710
200%
Detection curve
for overload
alarms when
Pn52C = 100%
(default setting)
Detection curve
for overload
alarms when
Pn52C = 50%
Torque reference (%)
Fig. 124: Detection Timing for Overload Alarms (A.720)
Sigma-7 Series SERVOPACKs
Basic Functions That Require Setting before Operation
Motor Overload Detection Level > Detection Timing for Overload Alarms (A.720)
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