Uninterruptible power supply: Difference between revisions
→The Delayed UPS Shutdown: reason for offdelay |
→Declare UPS units: rationale |
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# after offdelay seconds, the UPS power must be cut, even if | # after offdelay seconds, the UPS power must be cut, even if | ||
# wall power returns. | # wall power returns. | ||
# There is a danger that the system will take longer than the default 20 seconds to shut down. | |||
# If that were to happen, the UPS shutdown would provoke a brutal system crash. | |||
# We adjust offdelay, to solve this issue. | |||
"offdelay = 60" | "offdelay = 60" | ||
| Line 84: | Line 88: | ||
# "Restore power on AC" should now power on the system. | # "Restore power on AC" should now power on the system. | ||
# For reasons described above, ondelay value must be larger than offdelay value. | # For reasons described above, ondelay value must be larger than offdelay value. | ||
# We adjust ondelay, to ensure Restore power on AC option returns to Power Disconnected state. | |||
"ondelay = 70" | "ondelay = 70" | ||