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9.
Appendix B - Optional remote commands
Technical support personnel may modify the COMMAND that can executed from the standard “INV.OFF” remote
input or from the optional remote input/output card.
COMMAND
Name
Description
Typical application
Battery charge
inhibition
Disables the recharging of the battery, keeping the
recharge current to a minimum, independently of the
load.
This is done with the contact kept closed; if
reopened, the command is cancelled.
When there is a generator, this allows
its output power to be used only to
supply the load and not also to
recharge the battery.
Inhibition of
synchronization
with backup
mains
Disables the use of the bypass line and the
synchronization of the inverter. In the event of an
overload or fault, the UPS blocks and the load remains
unpowered.
This is done with the contact kept closed; if
reopened, the command is cancelled.
To be used when the frequency of the
generator or of the backup mains is
highly unstable and it is thus
preferred to inhibit the
synchronization of the inverter.
Battery
disconnector
contact
Activates the battery discharging or disconnected alarm.
To be used to indicate the opening of a battery switch
located external to the UPS.
A closed contact must be
provided when the external switch is opened.
Displays the status of the battery
disconnector.
Standby ON
Forces the selection of the UPS Standby-ON operation.
This is done with the contact kept closed; if reopened,
the command is cancelled.
To be used when the load may
support mains interference or
frequency variations and it is thus
preferred to improve system
efficiency. The load is powered if
there is a mains power failure.
Battery test
Starts the automatic battery test when the UPS is in
normal operation.
Any automatic battery test underway is terminated
immediately.
This is achieved by switching the contact
from open to closed.
Checks state of the battery.
Battery test
(with rectifier on)
Starts the manual battery test that continues until a
block command is received or until the full discharge of
the battery. Terminates any manual battery test
underway.
This is achieved by switching the contact from open to
closed.
Checks state of the battery.
NOTE: During this test the rectifier
remains on with output voltage low
in order to allow the supply of
current by the battery and to prevent
inverter shutdown after battery
discharge.
Manual battery
charging
Starts the “single first time recharge”.
Terminates the first time charging underway.
This is
achieved by switching the contact from open to closed.
Activates manual remote battery
charging
Activation of
block on Bypass
Bypass command by means of blocking the inverter as a
result of switching onto the bypass line.
NOTE: The command is only executed if the bypass
line is present with correct values.
This is achieved by
switching the contact from open to closed.
Load unpowered in the event of a
mains outage.
To be used for non-critical loads, the
battery does not discharge during a
mains power failure
Inhibition of
block on bypass
Resets the bypass command.
This is achieved by switching the contact from open to
closed.
Cancels the previous action and
disables the inverter block.
Inverter ON/OFF
UNCONDITIONAL inverter block command (the
command is executed even if there is no bypass line).
The UPS only switches onto bypass if the bypass line is
present (otherwise the load remains unpowered).
This is done with the contact kept closed; if reopened,
the command is cancelled.
Load unpowered in the event of a
mains outage.
To be used for non-critical loads, the
battery does not discharge during a
mains power failure.
Rectifier off
UNCONDITIONAL rectifier blocks command.
This is done with the contact kept closed; if reopened,
the command is cancelled.
Shuts down the rectifier and
discharges the battery.
