Input and output Power Distribution
VCO/4K Power Subsystem 1-9
4.0 INPUT AND OUTPUT POWER DISTRIBUTION
Input power from the power entry module travels through the power backplane to the power
supply module where it is converted to usable voltages. The power supply module distributes
the voltages to the power backplane, which distributes it to the rest of the system.
The power backplane contains:
•
four fuses (can be automatically reset)
•
connections for alarm signals
•
internal equipment safety connection
Figure 6 is a system-level functional diagram of the power subsystem.
Figure 6: Power Subsystem Functional Diagram for Single-Feed AC/DC Operation
NOTE: If you want single DC input power, you must install two external jumpers:
a/rtn to b/rtn and a/bat to b/bat. This way, both power supply modules are
powered from a common feed.
Power
Entry
Module
PEM =
PSM = Power
Supply
Module
PBP = Power
Backplane
PEM
PEM
PEM
PEM
Power
Entry
Disconnect
Line
Protection
Line
Filter
Fuses
PSM
Right
Control
PSM
Left
Control
PSM
Power
Voltages
Control
PSM
PSM
Redundancy
Diodes
Ring
Voltage
Analog
Logic
Cooling
Fans
PBP
Cable Harness
PSM
PBP