NEC NX7700i/5040H-32 - Manual (Page 141)

Operation Procedure
855-900547-200 3-12
3.3. Emergency System Shutdown with AC SW
The AC switch is provided for forced power off in the event that the system falls into a critical
condition which needs to turn off the power immediately. Do not use this switch in normal
operation.
The power to the main and expansion cabinets are turned off by turning off the relevant AC
switches. See Figure 3-1 in 3.1.1 for the locations of the AC switches.
When a UPS is connected, perform the emergency system shutdown from the UPS. Refer to the
UPS manual for the power-off procedure.
CAUTION Data may be destroyed when the AC switch is operated.
CAUTION
Provide criteria for operating the AC switch and use the switch
according to the criteria.
3.4. AC-LINK (Auto Control)
When connecting a UPS or a new AOC to the system, you need to decide whether it is controlled
automatically or manually, and if you select automatic control, ask our maintenance personnel to
enable automatic control.
SP command AC link mode Description
SG On AC LINK is enabled (it is
disabled by default).
The SP console screen for confirming and executing AC LINK is shown below.
CAUTION
When an automatic control system such as the rack
management system is installed, wait for more than two
minutes after OS shutdown to perform AC power-off control.
* If the AC power-off control starts within two minutes after OS
shutdown, an error will occur during system shutdown, or
the system will not start normally next time.