Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 144

Advanced Motor Protection and RTD Protection Functions
6.28 Device 81 - Variable Pickup Overfrequency
Reset
Time
Constant
1 = Enable
0 = Disable
Low Pass
Motor Frequency
Low Pass
Pickup
Filter
Level
Time
Constant
Dropout
Level
Output
Latching
Control
1 = Latched
Figure 6-68 Overfrequency Protection Diagram
Note
Overfrequency Protection Diagram
Fixed Pickup Overfrequency and Variable Pickup Overfrequency use the same diagram. To
provide clarity to the end-user, the titles are repeated so that the graph is adjacent to the text
description of the function. This method of description is applied consistently throught this
manual.
142
Filter
+ >
Σ
1 = pickup
-
0 = dropout
Count
Enable
Pickup Output
Time Delay
(Counter)
Zero Reset
Pickup
Time Delay
Count
Dropout
Enable
Time Delay
(Counter)
Zero Reset
Dropout
Time Delay
Advanced Motor Protection for Variable Speed Operation
>=
Pickup
Timed
Out
Output
>=
Dropout
Timed
Out
Manual, AA, A5E46373908A
Trip or
Alarm
Output