Operation Manual -
PoWerMaster®
2400 – 30 - 90 kVA
For GPUs with 28 VDC Active Rectifier Unit
Document no. 578.650BB
Page 86 of 91
12.7 ARU Default Factory Settings:
28 V Voltage (V):
28.0
28 V Compensation (V/600 A):
0.0 (Set if GPU is supplied with cable)
28 V Current Limit (A):
1000 /1500 (400A / 600 A)
Output Mode:
Simultaneous
Fan Control:
Normal
Plug Temperature:
Normally Open
12.8 28V Voltage
This Setup submenu allows the 28 volt output to be adjusted between 19.0 VDC and 33.0 VDC using
the UP and DOWN navigation buttons. (Please note that the acceptable voltage range for all
commercial DC powered aircraft is 26V to 29V.
Enter the Setup Menu and then scroll up or down to the 28V Voltage submenu. Press the center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
12.9 28V Compensation
DC voltage drops quickly as the current increases over a given length of cable. This Setup submenu
allows the 28 volt output to be automatically adjusted as the load increases. The allowed setting is
between 0.0 and 3.0 VDC at the rated continuous load of the unit. Note that the maximum output
voltage of the unit is 33 VDC.
Enter the Setup Menu and then scroll up or down to the 28V Compensation submenu. Press the center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
12.10 Current Limit Step Size
This Setup submenu is used to set the default current limit step size in steps of 50 / 100 / 200 / 300A.
The current limit settings are from 200 amps to 1600 amps for the 400 amp version of the unit and from
400 amps to 2400 amps for the 600 amp version, current limit can be changed at the standby screen
menu. Increment / Decrement of the current limit depend on the selected steps in the set-up menu.
Enter the Setup Menu and then scroll up or down to the Current Limit Step Size submenu. Press the
center
●
button to enter the submenu and then press the
●
button again to allow the value to be changed.
Press the up or down arrow buttons to change the selection. Press the center
●
button to record the new
value. Press the LEFT arrow button to exit the submenu and return to the submenu list.