3 messages, 1 message in case of a voltage failure, 2 message after a change in acu ups state – Lenze ACU UPS for Industrial PCs User Manual
Page 6: Messages, Message in case of a voltage failure, Message after a change in acu ups state, Software description

Software description
Messages
Message in case of a voltage failure
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LDCDP−EPC50ACU EN 4.0
1.3
Messages
1.3.1
Message in case of a voltage failure
In the case of a voltage failure, the ACU UPS takes charge of the IPC supply. The remaining
time to the IPC shutdown is displayed on the desktop. (
¶ 14).
EPC50ACU−003
Fig. 1−1
Desktop message in the event of a voltage failure
1.3.2
Message after a change in ACU UPS state
Changes in ACU UPS state are indicated by a change in colour of the ACU symbol on the
Windows task bar.
EPC50ACU−001
Fig. 1−2
Windows task bar with ACU UPS symbol
Legend:
Green: Battery/capacitor pack loaded and active
Yellow: Battery/capacitor pack is being loaded
Red: Indicates one or more of the following faults:
– ACU UPS is buffering the system
– Short circuit in the battery/capacitor pack
– Battery/capacitor pack is not connected
– Battery/capacitor pack is damaged
– Non−defined battery/capacitor packstatus
– Charging connection of the ACU UPS is defective