Sageon III Power System
Maintenance
PM990-8800-00, Rev. 9
6-3
A rectifier is identified by a label in the bezel recess and on the rear of the rectifier. Be certain you are installing the correct model
Rectifier. Only 48V/50Amp rectifiers are available with the Sageon III System.
To replace a Rectifier, refer to Section 2.14 Installing and Removing Rectifiers.
6.5 REPLACING THE SAGEON III CONTROL UNIT (SCU)
In the event of SCU failure, replace the assembly. There are no user-serviceable parts in the SCU.
The Sageon III Power System SCU can be hot-swapped. Be certain a replacement SCU is on hand before beginning this procedure.
To remove the Controller Assembly
1.
Check that a known good replacement Controller Assembly is on-hand for immediate installation.
2.
Re-install the new SCU.
FIGURE 6-1 REPLACING THE SCU (SAGEON III CONTROL UNIT)
Configuration Considerations
The System configuration is stored in non-volatile memory on the SCU Backplane board. The SCU plugs into the SCU Backplane
board so the SCU can be replaced without affecting the configuration.
It is recommended that if you have not previously recorded System configuration values and the SCU is functioning, do so now before
performing the replacement.
Alternatively, download the SCU configuration to either a local PC plugged into the operator panel USB connector or a remotely
connected PC. If the SCU is malfunctioning and you believe the configuration values may not be correct, save the file under a new
filename to prevent overwriting earlier good data. (SageView System Monitor software must be installed in the PC.) Refer to
Sageview manual for more information.
If the SCU is not functioning, the replacement unit will power up with the configuration stored on the SCU Backplane, which can then
be edited from the operator panel or a PC.
6.6 REPLACING AN AC BACK PLANE BOARD
1.
The system must be powered down to replace a rectifier back plane board.
