Delta MCS-1800 Specifications Page 18

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DELTA MCS-1800 3U Power Shelf
Installation, Operations and
Maintenance Manual
4-3
4.2.5 ALU Alarm Signal Descriptions
MAJ: Major Alarm
(1) 2 or above rectifiers fail.
(2) Temperature sensor disconnects.
(3) AC Low Voltage Alarm.
(4) AC High Voltage Alarm.
(5) LVDS Trip Alarm. (System equipped with PDU)
(6) Battery or Ambient over temperature. (System equipped with PDU)
(7) HVSD Alarm.
(8) Breaker Trip Alarm.
MIN: Minor Alarm
(1) One rectifier fail.
(2) Current Limit Alarm.
(3) DC High Voltage Alarm.
(4) DC Low Voltage Alarm.
HV: The alarm condition exists when the DC output voltage is higher than the parameter setting.
LV: The alarm condition exists when the DC output voltage is lower than the parameter setting.
AC Fail: The alarm condition exists when the AC voltage is absent.
LVDS: The alarm condition exists when the DC output voltage is lower than the threshold voltage.
(System equipped with PDU)
Fuse Fail: The alarm condition exists when the battery switch trip off or the DC Load output switch trip off.
4.2.6 Physical
Table 18 displays the ALU mechanical data.
Table 18 ALU Mechanical Data
Dimension Value
Height 5.2 in. (132mm)
Depth 9.9 in. (251.3mm)
Width 1.9 in. (46.2mm)
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