62
Representation in display LCD
Alarms
Ref.
OUTPUT DC VOLTAGE
INVERTER BLOCK
INVERTER BLOCKS
4.59
INVERTER BLOCKED
BLK.UPS -> BLK.INV
4.60
INVERTER DESATS.
INVERTER BLOCK
4.61
INTERN.EXE. ERROR
INVERTER BLOCK
4.62
DSP INTERN. ERROR
INVERTER BLOCK
4.63
INVERTER FAILURE
INVERTER BLOCK
4.64
UPS BLOCKED
BLK.REC -> BLK.UPS
UPS BLOCKS
4.65
INTERN.INI. ERROR
UPS BLOCK (DSP)
4.66
INTERN.EXE. ERROR
UPS BLOCK (DSP)
4.67
UPS BLOCKED
BLK.INV -> BLK.UPS
4.68
INTERN.COM. ERROR
UPS BLOCK (DSP)
4.69
DC BUS WRONG DISC.
UPS BLOCK
4.70
UPS OVERTEMPERAT.
UPS BLOCK
4.71
RECTIFIER OVERLO.
UPS BLOCK
4.72
INVERTER DESATS.
UPS BLOCK
4.73
DSP INTERN. ERROR
UPS BLOCK
4.74
PFC
&
INV BLOCK.
UPS BLOCK
4.75
PARAL. COMS ERROR
UPS BLOCK
4.76
FREQ. DET. FAIL
UPS BLOCK
4.77
Table 7.
Alarm list displayed in the LCD panel.
•
Screen 4.21
: In a system with parallel configuration, this alarm is
displayed in one of the equipments (or some) that detect commu-
nication errors, due to several reasons (parallel communication
cables are disconnected, or wrong connected, or in bad status;
wrong configuration of any of the equipments; etc.). Therefore,
one of the equipments is set as a fix Master of the system, and
the rest of the equipments can only be slaves permanently (or till
the equipments are shutdown and try to started them up again).
•
Screen 4.22
: In a parallel system, with N+M configuration,
where:
N: nr equipments to size the system according to the max-
imum permissible load.
M: nr redundant equipments in the system. It is equivalent
to over sizing the equipments in the system, in order to
continue supplying the maximum permissible load without
overloading it. Usually, this value is fixed to “1”.
The alarm is displayed when the load exceeds the maximum
permissible load by N equipments. In this condition, the equip-
ments will not be overloaded individually, meanwhile the load
doesn’t exceed the maximum load of N+M equipments.
Example: Assuming that a parallel system of 2+1 equipments
of 20kVA (N=2, M=1).
If the load of the system is lower than 40kVA. Any overload
alarm is displayed in the system (if it is not exceeded the
individual overload per phase of each equipment).
If the load of the system is higher than 40kVA. The de-
scribed alarm 4.22 of Lost of Redundancy is displayed.
If the load of the system is higher than 60kVA. Besides of
the alarm 4.22 of Lost of Redundancy, there will also be, as
minimum, (among others), the alarm 4.2 of Inverter over-
load in all the equipments of the system.
•
Screen 4.23
: This alarm is displayed when in any phase, the
rectifier input voltage phase to neutral is out of the set range
(+15 % / –20 % by default) or the rectifier input frequency is
out of the set range (± 5 Hz by default). Next, the rectifier is
shutdown.
•
Screen 4.24
: This alarm is displayed when the quantity of
IGBT desaturations in the rectifier stage, reaches its limit.
•
Screen 4.25
: This alarm is displayed when there is a (*) DSP
Internal Error in the rectifier module, shutting down the rectifier
immediately. There will be 3 more retries before blocking rectifier.
•
Screen 4.26
: When a wrong phase rotation is detected in the
mains and under these conditions the rectifier is tried to be turned
ON, an input phase rotation alarm is displayed shutting down the
rectifier immediately.
•
Screen 4.27
: When a high or low DC bus voltage of the equip-
ment is detected, the rectifier is shutdown for a while, in order
to retry to start up later on (see description of screen 4.51 too).
•
Screen 4.28
: In a parallel system, rectifiers from the equipments of
the system connected in parallel can be shutdown, due to the man-
agement of system as a whole, therefore this alarm is displayed.
•
Screen 4.29
: This alarm can be displayed for two reasons:
Input contactor from the equipment faults (it doesn’t close
properly). It is shown when the DC bus voltage, it is not kept
at certain level when turning on such input contactor.
If for any reason, during the initial start up of the inverter,
with the input contactor closed and rectifier still shutdown,
it is detected a wrong inverter voltage or it is not able to
start up.
The system can retry the contactor test several times (see de-
scription of the screen 4.57 too).
•
Screen 4.30
: This alarm is displayed when the quantity of
IGBT desaturations in the inverter, reaches its set limit.
•
Screen 4.31
: When the inverter output is overloaded, it is dis-
played this alarm. Depending on the level of this overload, the
inverter will be shut down after some time according to the UPS
overload curve.
•
Screen 4.32
: When a shutdown is enabled by an external
signal, the inverter is shut down and it is displayed this mes-
sage.
•
Screen 4.33
: When the inverter is running and the mainte-
nance bypass switch is turned ON the inverter is shutdown im-
mediately.
•
Screen 4.34
: This alarm appears when, in a parallel system,
one UPS goes to battery mode. The inverter will shut down.
USER MANUAL
