Hitachi HF-W6500 45/40, Feature Manual

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2. ITEMS MONITORED BY THE RAS FEATURE
2-1
CHAPTER 2 ITEMS MONITORED BY THE RAS FEATURE
This chapter explains the items monitored by the RAS Feature.
For information about the hardware specifications of the RAS external contacts interface (optional)
described in this chapter and the usage of each contact, see “HF-W6500 Model 45/40
INSTRUCTION MANUAL (manual number WIN-62-0064)”.
2.1 Fan Monitoring
The fan monitoring function monitors the multiple fans located in this equipment and notifies
in the following methods when one of the fans malfunctions.
(1) Hardware status window
(2) Event notification
(3) Popup notification
(4) Outputs on the status display digital LEDs
(5) Remote notification
(6) Automatic shutdown
(7) Alarm lamp
For information about items (1) through (5), see “CHAPTER 4 CHECKING THE
HARDWARE STATUS”. For information about item (6), see “5.1 Automatic Shutdown of
the Equipment”.
If you use the MCALL contact of the RAS external contacts interface, the external hardware
connected to the RAS external contacts interface can detect malfunction of this equipment.
The following table shows how the state of the MCALL contact changes.
Table 2-1 State of the Equipment in Terms of Fan Monitoring and State of the MCALL Contact
Status of this equipment MCALL contact
During startup of the equipment or when the power is
off Open
When the fans operate normally or have recovered
from malfunction Open
During malfunction of the fans Closed
The alarm lamp (as well as the MCALL contact of the RAS external contacts interface) is not
dedicated to fan monitoring, and therefore, it is not turned off (opened) when the system
recovers from fan malfunction as long as malfunction is detected for other monitored items.