Parameter
Values (Range)
Unit
Step
Default
Description
Operate Tm Freq
80...200000
ms
10
200
Time delay to op-
erate for under fre-
quency stage
Operate Tm df/dt
120...200000
ms
10
200
Time delay to oper-
ate for df/dt stage
Restore start Val
0.800...1.200
xFn
0.001
0.998
Restore frequency
setting value
Restore delay time 80...200000
ms
10
300
Time delay to re-
store
Table 678: LSHDPFRQ Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=on
5=off
1=on
Operation Off / On
Table 679: LSHDPFRQ Non group settings (Advanced)
Parameter
Values (Range)
Unit
Step
Default
Description
Reset delay time
0...60000
ms
1
50
Time delay after
which the definite
timers will reset
4.6.2.8
Monitored data
Table 680: LSHDPFRQ Monitored data
Name
Type
Values (Range)
Unit
Description
START_DUR
FLOAT32
0.00...100.00
%
Start duration
LSHDPFRQ
Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.6.2.9
Technical data
Table 681: LSHDPFRQ Technical data
Characteristic
Value
Operation accuracy
f<
±10 mHz
df/dt
±100 mHz/s (in range |df/dt| < 5 Hz/s)
± 2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)
Start time
f<
<80 ms
df/dt
<120 ms
Reset time
<150 ms
Operate time accuracy
±1.0% of the set value or ±30 ms
1MRS757644 H
Protection functions
620 series
Technical Manual
719
