GPC, PPU
Option O1, Water turbine control
DEIF A/S
Page 17 of 19
Functional description
Jet deflector
The jet deflector input is used when the GPC/PPU controls the opening of the jet deflector.
Configuration
The input functions are activated using a binary input. The input must be chosen in the PC utility
software. (Select the menu ‘Settings’/’Inputs/Outputs’ or press the icon on the horizontal toolbar).
When selecting ‘Inputs/Outputs’, this dialog box appears:
In the example of the configuration above, the ‘Deflector closed’ feedback can be changed to
terminals 23, 24, 26 or 27.
Inhibit
The inhibit functionality is described in the Designer’s Reference Handbook. The functionality
varies if the inhibit has been configured manually through the configuration tool in the USW.
Not running
When the protections are configured to ‘Not running’, then the alarms are activated when the
frequency measurement is f
NOMINAL
–1Hz, typically 49Hz or 59Hz.
