APC Rack Automatic Transfer Switch, 12A, 230V SU043 User Manual
Product codes
SU043
14
APC Redundant Switch: Installation and Operation Manual
Configuration
b. Restart the computer on which PowerChute plus is
installed.
c. Start PowerChute plus. Communication is to
UPS
-
A
.
d. Configure
UPS
-
A
according to your requirements.
e. Set the
UPSID
to
UPS
_
A
.
When one
UPS
becomes
unavailable
unavailable
When one of the two
UPS
s becomes unavailable to supply
AC
power, PowerChute plus sends the message “Self test failed:
invalid test.” Any of the following conditions will cause the
message to occur:
invalid test.” Any of the following conditions will cause the
message to occur:
• A
UPS
self-test fails.
• Communication with the alternate
UPS
is lost.
• The voltage of the alternate
UPS
is out of range.
•
UPS
-
A
fails, and the Redundant Switch transfers the
power input and PowerChute plus communication to
UPS
-
B
.
To regain high availability for your system, correct the problem
as soon as possible. See “Troubleshooting” on pa ge18.
as soon as possible. See “Troubleshooting” on pa ge18.
Note
When any self-test of the primary
UPS
occurs,
the Redundant Switch switches power and
communication to the other
communication to the other
UPS
, causes a self-
test of that
UPS
, and then switches back. This is
normal behavior.