Crystal Vision
Introduction
Indigo 2 CoolFlow User Manual R1.3
3
20/06/2012
1 Introduction
The Indigo CoolFlow range comprises two frame types: 4U frames for up to 24 modules and
2U frames for up to 12 modules.
There are two 2U frame variants - passive front panel and active front panel which is a
Statesman-enabled version without controls or a display. The active panel Statesman-
enabled frame has also got Ethernet capability.
This manual covers:
Indigo 2 CoolFlow with passive front panel
Indigo 2SE CoolFlow Ethernet capable with active panel, no controls or display.
The Indigo 2SE CoolFlow version also supports Statesman.
There are configurable rear connectors and space for up to two plug-in power supplies. The
dual supply facility allows for redundancy and continued operation in the event of a power
supply failure.
All models have a hinged front panel that allows easy access to removable fan assemblies,
power supplies and modules.
The Indigo 2 CoolFlow frame with front control panel open
There are three easily accessible front fans. One is fitted on a detachable plate in front of the
PSUs and the other two are attached to the rear of the front panel.
If the front panel is opened an optical sensor switches the PSU fan on and at the same time
the front panel mounted fans are switched off. If one fan fails, or operates too slowly, the
other fan is automatically switched to full power and an alarm asserted.
A frame temperature sensor mounted above the top central module position (slot 5) also
controls fan speed.
There are two cooling modes: automatic and maximum.
With automatic cooling both front panel fans run continuously, increasing in speed as the
temperature inside the frame goes up.
In maximum cooling mode both front panel fans are set to maximum speed. This mode is
ideal for equipment bays where noise is not a concern.
