Crystal Vision
Installing modules
3.4 Select the cooling mode
There are three cooling modes that can be selected using a switch at the rear of the control
panel.
Indigo 1AE/1SE front panel hardware settings – cooling mode
The three modes are normal, quiet and maximum cooling.
Switches 1 and 2 of the two-position DIL switch control the three cooling modes as follows:
Levers 1 & 2 Function
Notes
Both up
Normal
cooling
Both fans run continuously increasing in speed as the
temperature inside the frame goes up.
1 down, 2 up
Quiet mode
For use with a lightly loaded frame for low ambient
temperature. When the frame temperature is below
approximately 45°C the panel fan is switched off and the
PSU fan runs at minimum speed. If the frame
temperature goes above 45°C it reverts to normal
cooling and goes back to quiet mode when frame
temperature falls below 42°C.
1 up, 2 down
Max cooling
mode
In Maximum cooling mode both fans never run below
near maximum speed. Fan speed increases to
maximum at high frame temperature. This mode is ideal
for equipment bays where noise is not a concern.
Both down
Reserved for
future use
Operates as normal mode with current software.
Note:
Quiet mode is dependent on PSUs/fans not being in an alarm state.
Only one of the fans is essential in normal operation. If one of the fans should
fail, the closed frame can still operate indefinitely with an ambient temperature of
40°C.
Warning:
Although it is possible to operate the frame with the front panel open the frame
may not meet electromagnetic compatibility (EMC) requirements in this
condition.
Indigo 1 User Manual R1.14
22
27 February 2020