4. Status indicator (solid green on — normal opera-
tion; solid amber — failure or no power)
1. Power supply
5. Handle2. AC input connector
3. Latch
Figure 14 Power supply
Fan module
Fan modules provide the cooling necessary to maintain the proper operating temperature within the
controller enclosure. If one fan fails, the remaining fan is capable of cooling the enclosure.
2. Amber — Fan fault LED1. Green — Fan normal operation LED
Figure 15 Fan module pulled out
Table 8 Fan status indicators
DescriptionFault indicatorStatus indicator
Normal operation.Solid green
On left — green
Maintenance in progress.Blinking
Amber is on or blinking, or the enclosure is
powered down.
Off
Fan failure. Green will be off. (Green and amber
are not on simultaneously except for a few seconds
after power-up.)
OnOn right — amber
EVA4400 hardware26
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