Operation Manual -
PoWerMaster®
2400 – 30 - 90 kVA
For GPUs with 28 VDC Active Rectifier Unit
Document no. 578.650BB
Page 82 of 91
12.4 Operator’s Instruction
The 28 VDC ARU is operated by means of the Display / Keyboard Interface.
Please refer to section
6.0
(Operators Instructions) and
6.1
(Using the Display/Keypad).
12.5 Operating the unit
•
To adapt the 28 VDC output power to different types of aircraft, it is possible to set a maximum
DC current level in steps of 50/100/200/300 A (step size can be set via the set-up menu). Use
left arrow to decrease current limit and use right arrow to increase current limit.
•
Depending on the rating of the GPU:
400 A rating e.g. 200 to 1600 Amp (in selected increment step)
600 A rating e.g. 300 to 2400 Amp (in selected increment step)
To ensure hassle-free starting of the aircraft engine, the current limit function is delayed 0.7
seconds.
•
Insert the aircraft cable into the aircraft. Make sure the cable is inserted till you feel a natural
resistance. The plug may be equipped with a 90% switch /split “F” pin. In this case the unit will
not function if the plug is not fully inserted.
•
Press the 28 VDC Start/Stop button.
•
The unit is now in operation and ready to supply the aircraft with power. This is
also indicated via the green LED located close to the 28 VDC Start/Stop button.
•
If the unit shuts off and no longer is supplying power to the aircraft, this is reported in clear text
in the display. Also a corrective action is displayed.
•
During operation, various parameters can be viewed via the display. Use the navigation keys
▼▲
to browse through the available screens:
Press
“Right arrow”
to increase
current limit.
Press
“Left arrow”
to decrease
current limit.
