Power cooling module – 2U enclosures 39
Power cooling module – 2U enclosures
AC-DC power is provided by up to two auto-ranging Power Cooling Modules (PCMs) with integrated axial
cooling fans. The IOMs control fan speed. Also see “System airflow” (page 40) for optimal cooling within the
enclosure(s).
580W PCM
The 580W PCM voltage operating range is nominally 100V–240V AC, and operates at
50–60 Hz
input frequency. The
isometric rear orientation in Figure 33 shows the PCM aligned for insertion into the right-hand PCM slot located on the
enclosure rear panel.
Figure 33 LEDs: 580W PCM – 2U enclosure rear panel
For a full frontal view of a PCM panel located on the enclosure rear-panel, see Figure 22 (page 30).
Multiple PCMs
The 2U storage system includes two PCMs which provide redundant power control for the system so that if one
PCM fails, the other maintains the power supply, and enclosure operation is not affected while you replace the
faulty module.
580W Power Cooling Module LED descriptions (see inset illustration detail above)
PCM OK LED (Green) Fan Fail LED (Amber/blinking amber)
AC Input Fail LED (Amber/blinking amber) DC Fail LED (Amber/blinking amber)
LED behavior
• If any of the PCM LEDs are illuminated amber, a module fault condition or failure has occurred.
• For a detailed description of PCM LED behavior, see “580W PCM LEDs” (page 96).
PCM LEDs Inset
As shown on PCM in left-hand slot
PCM oriented for use in right-hand slot
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