Section III
Operation
Page 3.16
BP
II S, 3.00
08/96
Table 3–2. Alarm History Messages and Descriptions with Corrective Actions (continued)
Screen Message
Corrective Action
Description
out bkr clsd
∗
UPS Output Circuit Breaker (Switch)
closed
No action required
sbs pwr norm
∗
Static Bypass Switch power normal
No action required
sbs pwr falA
Static Bypass Switch power supply
failure – Phase
Test/replace SBS drive board
bypass open
∗
Bypass Circuit Breaker Open
No action required
bypass closed
Bypass Circuit Breaker closed
Follow Startup procedure to open
sbs on
Static Bypass Switch on (closed)
Follow Startup procedure to return
to normal.
sbs off
∗
Static Bypass Switch off (open)
No action required
sbs disabled
Static Bypass Switch disabled
Enter SBS Maintenance Menu and
enable transfer
sbs enabled
∗
Static Bypass Switch enabled
No action required
ups amb high
UPS ambient temperature high
Room is too hot. Lower temperature
ups amb norm
∗
UPS ambient temperature normal
No action required
ups amb shdn
UPS ambient temperature shutdown
Room is too hot. Lower temperature.
byp volt hi
Static Bypass Switch bypass voltage
high
Verify SBS input voltage. Decrease
if necessary.
byp volt low
Static Bypass Switch bypass voltage
low
Verify SBS input voltage. Increase if
necessary.
byp volt nml
∗
Static Bypass Switch bypass voltage
normal
No action required
byp freq. hi
Static Bypass Switch bypass
frequency high
Verify SBS input Frequency.
byp freq. low
Static Bypass Switch bypass
frequency low
Verify SBS input frequency.
byp freq. nml
∗
Static Bypass Switch bypass
frequency normal
No action required
rct summary
Rectifier summary alarm
Review other rectifier alarms for
cause
rct inhibit
Rectifier inhibited
Review other rectifier alarms for
cause
rct normal
∗
Rectifier normal
No action required.
dc low shtdn
UPS dc link low shutdown
Complete UPS restart procedure is
required
dc link norm
∗
UPS dc link normal
No action required
* – Not an alarm condition.
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