Grass Valley PFR 500/E Dec 10 2001 - Manual (Page 23)

Power supplies (PSs)
November 17, 2000 PFC 500/E Instruction Manual 23
Power supplies (PSs)
The power supplies are located behind the drive fan pack. With two power supplies,
the top supply is installed inverted with respect to the bottom supply.
Each power supply is an auto-ranging, power-factor-corrected, multi-output, off-line
converter with its own line cord and on/off switch. Each supply supports a fully
configured PFC 500 and shares load currents with the other supply, if it is present. The
drive voltage lines have individual soft-start switches that protect the disk drives if
you install them while the PFC500/E is powered up. A disk with power-related faults
will not adversely affect the operation of any other disk.
Each power supply has status lights. These status lights are partially visible through
the drive fan pack, and fully visible with the drive fan pack removed. The status lights
are described in the “Monitoring PFC500/E status” on page 42.
A latch on the power supply locks it into place to ensure proper connection to the
midplane. You can add or remove one power supply in a highly available PFC 500/E
while the PFC500/E is powered up.
On/Off switch and
circuit breaker
Latch
Active light
(green)
Ac line cord
connector
Check light
(amber)
!
Cooling Check
light (amber)