page 82 / 85 0MLMHTM16RUENUB
13
BYPASS COMMAND
ACTIVE; 8=COMMAND
OFF
Alarm present when the system has been deactivated and switched onto the
bypass, by means of a specific command inserted via the keyboard. The command
remains stored also during shutdown due to a mains power supply failure. The
system does not return to normal operation when the mains power supply is
restored if the block has been set intentionally and not deactivated.
14
REMOTE BYPASS
COMMAND: ACTIVE
Alarm present when the system has been deactivated and switched onto the
bypass, by the command applied with the "signals and remote commands"
connector.
The command is not stored, and the system returns to normal operation when the
command is cancelled, provided there is a power supply voltage.
15
OVERTEMPERATURE or
FAN FAILURE
Alarm when one of the internal temperatures on the system card, the inverter
power modules, the rectifier power modules or the transformers has exceeded the
maximum value allowed.
This may be caused by:
- operation in an environment where the temperature is too high;
- a fault in the fans.
16
INSULATION
LOSS
Indicates that a signal of “insulation loss” has been received from an external
device
17
INPUT VOLTAGE
SEQUENCE NOT OK
Indicates that the sequence of the phases at the bypass line input is not correct.
It is normally sufficient to switch any two phases over in order to obtain normal
operation.
18
OUTPUT OFF, CLOSE
SWOUT OR SWMB
Alarm when there is no output voltage because SWOUT and SWMB are both
open at the same time.
19
SYSTEM OFF COMMAND
ACTIVE; 8=COMMAND OFF
Alarm present when the command for total shutdown from the panel or through
the RS232 connection, COMMAND STORED, has been initiated. The system
executes the shutdown command with a few seconds’ delay to allow for
cancellation. The command remains stored even during shutdown due to a power
outage. When the power supply is restored, the system does not return to normal
operation if the block that has been intentionally set is not deactivated; to
deactivate it close SWBY or, if required, press 8.
20
REMOTE SYSTEM OFF
COMMAND: ACTIVE
Same as the previous alarm, with command present from the "REMOTE"
connector.
21
MEMORY CHANGED:
CODE=
Code 1 the memory has been changed and the operating parameters have returned
to standard values.
If non-standard values were previously set, these must be personalized again.
Switch the display off and then on again in order to remove the alarm.
NOTE: codes other than 1 may be displayed temporarily during variations due to
personalization, but this does not affect normal operation.
22
TIMER OFF ACTIVE
Alarm when the daily timer set for the control of the automatic shutdown and
restart cycles starts operating (page 69). The values of Toff and Ton are factory-
set to zero (thus the timer condition is disabled).
23
SYSTEM OFF
The system is OFF therefore the output load is not feed
24
BATTERY TEST ACTIVE
The battery test is operating
25
Parallel Cable FAULT
There is a fault in the parallel signals cable.
26
Fuse FAULT
Some optional fuses are blown
27
Battery discharge Fail
The optional battery discharging test failed.
28
NOT USED
Alarm number not used.
29
High battery
temperature
The battery temperature is over the limit.
30
Slave UPS off by rectifier or
SWIN OFF
In a system with common battery the inverter was switched off because the input
stage failed or switched off.
31
Fan FAULT
Failure in some fans (available only when installed the fan alarm option)
32
Parallel Redund. lost: High unit
power
In a parallel system, the redundancy is has been lost because the output load
power is high.
