ABB PSTX Series Installation And Commissioning Manual page 113

7.18.3 Thyristor overload warning
The thyristor temperature is higher than 90 % of the trip
level.
Thyristor overload warning has these parameters:
Parameter
20.08 Thyristor OL out
20.09 Thyristor OL
7.18.4 Current underload warning
The line current decreases below the specified value
during continuous operation.
Current underload warning has these parameters:
Parameter
21.01 Curr underload level
21.02 Curr underload trip time
21.03 Curr underload delay time
21.04 Curr underload out
21.05 Curr underload
7.18.5 Power factor underload warning
The power factor is below the warning level.
Power factor underload warning has these
parameters:
Parameter
21.06 Pwr factor underload level
21.07 Pwr factor underload trip time
21.08 Pwr factor underload delay time
21.09 Pwr factor underload out
21.10 Pwr factor underload
Description
Identifies the Event groups this
warning is part of.
Enables thyristor overload warning.
Description
Sets the Current underload warning
level.
Sets the time that the current is
lower than the Warning level to trip.
Sets the time delay after Top of
ramp when the warning is enabled.
Identifies the Event groups this
warning is part of.
Enables Current underload warning.
Description
Sets the Power factor underload limit.
The time it is below limit until trip.
The time until diagnoser starts to work in
Top of ramp.
Identifies the Event groups this warning is
part of.
Enables Power factor underload warning.
1SFC132081M0201 | Installation and commissioning manual | Functions
Setting range Default value
Eventgroup 0 ... 6 0000100
Off, On Off
Setting range Default value
0.1 ... 1.0 × I e 0.8 × I e
0 ... 30 s 1 s
0 ... 30 s 5 s
Eventgroup 0 ... 6 0000100
Off, On Off
Setting range
0.0 ... 1.0
0 ... 30 s
0 ... 30 s
Eventgroup 0 ... 6
Off, On
7
Default value
0.7
1 s
5 s
0000100
Off
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