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22 - E-51028230XT/BG
MAINS 1 OUTSIDE TOLERANCES,
CHECK MAINS 1
The normal AC source (M1) frequency
or voltage is outside specified tolerances
and the rectifier/charger has shut down.
The inverter is on battery power.
MAINS 1 INPUT SWITCH Q1
IS OPEN
The normal AC input (M1) switch Q1 is
open. It must be closed for rectifier/
charger start-up. The buzzer sounds
slowly and discontinuously.
INTERNAL UPS FAULT,
LOAD TRANSFER FAULT,
CALL MAINTENANCE
A fault has occurred in the static switch
that transfers the load between the
inverter and the bypass AC source
(M2). Servicing by the after-sales
support department is required. The
buzzer sounds continuously.
OVERLOAD
RATED CURRENT PER PHASE =
XXX A
CHECK LOAD LEVEL
This display informs the user that load
current is greater than rated current,
and gives the value. The buzzer
sounds continuously.
UPS SHUTDOWN DUE TO AN
OVERLOAD,
CHECK LOAD LEVEL
This message follows the preceding
when the overload persists. The UPS
has shut down and the buzzer sounds
continuously.
Control-panel display (cont.)
List of secondary
messages
LOAD ON MAINS 2
The load has been transferred to the
bypass AC source (M2) and is no
longer protected (only in on-line mode).
The buzzer sounds continuously.
MAINS 2 OUTSIDE TOLERANCES
TRANSFER DISABLED
CHECK MAINS 2
The bypass AC source (M2) frequency
or voltage is outside tolerances and the
inverter is unable to synchronise.
Transfer of the load from the inverter to
the bypass AC source (M2) or vice-
versa will result in an interruption of the
supply of power to the load. The buzzer
sounds slowly and discontinuously.
BATTERY OVERTEMPERATURE,
CHECK VENTILATION
The battery temperature is outside
tolerances. The buzzer sounds slowly
and discontinuously.
BATTERY ROOM VENTILATION
FAULT,
CHECK VENTILATION
A fault requiring servicing has occurred
in the battery room ventilation system.
The rectifier/charger shuts down after a
30-second time delay.
The user must take steps to re-
establish correct operation of the
ventilation system.
If a harmonic filter is present in the
installation, this message also signals
an abnormally high temperature in the
filter inductor.
The buzzer sounds slowly and
discontinuously.
INVERTER NOT IN PHASE WITH
MAINS 2.
TRANSFER DISABLED,
CHECK MAINS 2
The phase difference between the
inverter and the bypass AC source
(M2) is outside tolerances. Transfer of
the load between the inverter and the
bypass AC source (M2) will result in an
interruption in the supply of power to
the load.
For parallel UPSs, this message should
be interpreted as meaning the phase
difference between the inverter for which
the message is displayed and the other
inverters is outside tolerances.
UPS SHUTDOWN
BY AN EXTERNAL COMMAND
The inverter has received a command
to shut down. The command is in the
form of a signal from received the
remote-indications relay board which
has been set for this function.
FREQUENCY CHANGE
BY AN EXTERNAL COMMAND
The inverter has received a command
to change its output frequency (50 Hz
or 60 Hz). This command is not
effective unless the inverter has first
been shut down. The frequency is
changed when the inverter is started
again.
MAINS 2 INPUT SWITCH Q4S IS
OPEN
The bypass AC source (M2) input
switch Q4S is open, i.e. backup power
for the load via the bypass AC source
(M2) is not available.
INVERTER OUTPUT SWITCH Q5N
IS OPEN
Inverter output switch Q5N is open, i.e.
the load cannot be supplied via the
inverter.