Vertiv
|
+24 VDC Power System User Manual (Section 6013)
|
Rev. G
20
MCA Messages
The following chart provides an explanation of each MCA message appearing on the MCA Menu Tree (Section
6022). The MCA Menu Tree is located in the separate
INSTALLATION MANUAL
and the
CD CARRIER
MANUAL
. It is also provided on the CD (Electronic Documentation Package) furnished with your system. Note
that each line in the MCA Menu Tree contains a number. This number is referenced in the following chart.
MCA
Menu
Tree
Line No.
(Section
6022)
Message Displayed
Associated
with...
Definition
Can this value
be changed?
0
SYSTEM OK
Normal
Display
NO ALARMS ARE ACTIVE.
No
1
## ALARMS ACTIVE
or
NOT RUNNING YET!
or
...............................
Normal
Display
THERE ARE ACTIVE ALARMS.
## = number of active alarms.
or
No Rectifier Modules (PCUs) are
communicating with the MCA.
or
Display has "timed-out".
No
2
ALARM EMERG STOP
Main
Alarm Menu
Displays if a Rectifier Module (PCU)
emergency shutdown or fire alarm
disconnect signal is applied to the
system.
No
3
ALARM LVD ACTIVE
Main
Alarm Menu
Displays if any low voltage
disconnect circuit has disconnected.
No
4
ALARM SYS 50% BOD
or
ALM VERY LO VOLT
or
ALARM LO VOLTAGE
Main
Alarm Menu
Displays if system voltage decreases
to a preset adjustable value,
indicating that the battery has been
continuously supplying the load and
has discharged to approximately half
its reserve time.
No
5
ALARM SYSTEM BOD
or
ALARM LO FLOAT
Main
Alarm Menu
Displays if system voltage decreases
to a preset adjustable value,
indicating that the battery is
supplying the load and is
discharging.
No
6
ALARM SYSTEM HV1
or
ALARM HIGH FLOAT
Main
Alarm Menu
Displays if system voltage increases
to a preset adjustable value.
No
7
ALARM SYSTEM HV2
or
ALARM HI VOLTAGE
Main
Alarm Menu
Displays if system voltage increases
to a preset adjustable value.
No