GPC, PPU
Option O1, Water turbine control
DEIF A/S
Page 13 of 19
Relay functionality
The relay output for the jet deflector will either open the jet deflector or keep it in the closed
position. When the deflector must open, relay 1 will change position to 5/6, thus disconnecting
the current flow through 6/7.
The purpose of using the status relay is to open the deflector whenever the multi-line 2 is without
power or when the watch dog of the device detects a fault.
The status relay is a normally closed relay. When the GPC/PPU is in good
functioning condition the relay is energized.
The status relay is only for DC voltage.
When the multi-line 2 is without power, relay 1 output will be in the ‘closed’
deflector valve position.
To open the deflector valve, use the status relay or open it by other means.
The multi-line 2 will hold the deflector valve closed except in shutdown
situations.
