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17
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 synchronize.
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 toler-
ances. The buzzer sounds slowly and dis-
continuously.
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.
This message also signals an abnormally
high temperature in the filter inductor.
The buzzer sounds slowly and discontinu-
ously.
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/charg-
er 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 invert-
er 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 cur-
rent is greater than rated current, and
gives the value. The buzzer sounds con-
tinuously.
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.
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 sup-
ply of power to the load.
For parallel UPSs, this message should be
interpreted as meaning the phase differ-
ence between the inverter for which the
message is displayed and the other invert-
ers 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-indica-
tions relay board which has been set for
this function.
n 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.
Control-panel Display
User’s Manual