Grass Valley PFR600/E - Manual (Page 25)

Power supplies
20 February 2004 PFR600/E Instruction Manual 25
Power supplies
There are two auto-ranging power supplies, each with its own power cord and standby
switch. Each supply supports a fully configured PFR600 Series RAID and shares load
currents with the other supply, if it is present. The power supplies are designed so as
to protect the disk drives if you install them while the PFR600 Series RAID is
powered up. A disk with power-related faults will not adversely affect the operation
of any other disk.
Each power supply has status LEDs visible from the rear panel. The status LEDs are
described in the
“Interpreting rear panel status LEDs” on page 42 .
A retaining screw secures the power supply in place. You can add or remove one
power supply in the RAID Storage Chassis while the RAID Storage Chassis is
powered up.
Fan modules
There are two fan modules used to cool the components installed in the PFR600
Series RAID chassis. The fan modules connect to the midplane board for power.
One status LED on the rear panel of the fan module indicates status. The status LED
is described in the
“Interpreting rear panel status LEDs” on page 42 .
A retaining screw on the fan module holds the module in place.
NOTE: If power is connected, fans run at low speed even with the power supply
switches in standby position.