Block Diagram - Premium EDT-150 Manual Del Usuario

BLOCK DIAGRAM

CONNECTIONS
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DESCRIPTION
The equipment consists of a rectifier-charger that, in case of
having input AC voltage, provides a regulated output voltage
and charges the battery in a controlled way.
The equipment comprises a switched power supply and a
three-state battery charger. It also incorporates alarm
circuits that signal failures in the input voltage, in the battery
or in the charger. Alarm outputs are potential-free relay
contacts.
Mains supply operation
In normal operation, the equipment provides the output
current and at the same time charges the battery in a
controlled way until it is brought to the floating state. The
maximum charging current, as well as the rest of the
parameters related to battery charging, are configurable by
the user through the Ethernet connection of the equipment.
In case the sum of the charging current and the output
current exceeds the maximum current of the equipment, the
output power is prioritized.
The equipment allows, with battery support, to provide
current peaks above the maximum temporarily.
The average of this extra current provided by the battery
should not be higher than the average of the charging current
since, if so, the battery would end up discharging.
If the equipment is not able to provide output voltage, either
due to a failure in the input AC voltage or due to the failure
of the charger, the corresponding alarm will be activated.
Operation without input AC voltage
In the absence of mains voltage, the battery feeds the output
and the charger control. The output voltage will then depend
on the discharge curve of the battery.
If the battery is discharged
(configurable), the end of autonomy alarm will be activated
and, after a certain time, it will be permanently disconnected
from the charger to prevent a situation of deep discharge that
could damage it. Once the mains voltage is reset, charging
starts again.
Battery test
The charger has a system that periodically and automatically
checks the status of the batteries. Starting from the float
state, the load connected to the output is used to discharge
the battery down to 40%. If the battery is able to maintain
the voltage above a certain threshold until it reaches the
required depth of discharge, the test is considered successful.
Since the discharge current depends on the load connected
to the equipment (and is not so much controllable), the
duration of the battery test is limited. If after the time limit
it has not been possible to discharge the battery to the
required level, the test is considered correct as well. The test
parameters (time between tests, maximum test duration,
depth of discharge and/or threshold voltage) are configurable
by the user.
Battery temperature sensor
The equipment includes a temperature sensor that can be
attached to the battery. If used, the fast charging and
flotation voltages will be optimally adjusted depending on the
temperature of the battery. In this way it is possible to
preserve the useful life of the battery.
below a certain level
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31-05-2021
CA-656-1