DSE DSE9130 - 6 Operation; Operation of Dse9100 Series; Dse9200 Series; Protection; Psu Mode

Operation
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6 OPERATION
6.1 OPERATION OF DSE9100 SERIES / DSE9200 SERIES
DSE9100 SERIES
DSE9200 SERIES
DSE9130 12V 5A DSE9250 24V 3.7A
DSE9140 12V 10A DSE9255 24V 5A
DSE9150 12V 2A DSE9260 24V 10A
DSE9150 12V 3A
DSE9155 30V 2A
The DSE9100 & DSE9200 series of battery chargers can be used as a battery charger, DC power
supply, or both at the same time. For instance, the units can be used to power the generator control
panels and charge the panel batteries or starter batteries at the same time.
With no AC input to the charger, the Charge fail relay will be closed. This can be used to provide
indication of charger failure which operates upon mains supply AC supply failure or upon one of the
protections being activated.
6.1.1 PROTECTION
• Current limit to charger specification (2A or 3A depending upon charger model)
• Short circuit protection. Charger automatically restarts operation after the fault is removed.
• Reverse battery polarity protection. Charger automatically restarts operation after the fault is
removed.
6.1.2 PSU MODE
If no battery is connected to the output terminals, the DSE9100 & DSE9200 series battery charger will
operate as a DC power supply only, current limit is factory set. See the section entitled Specification
elsewhere in this manual for output specifications.
6.1.3 CHARGE MODE
Constant Voltage
The DSE9100 & DSE9200 series battery charger operates in Constant voltage current limited mode.
The charger output voltage is maintained at a constant level to allow the battery to charge while the
load does not exceed the maximum rating of the charger.
Once the battery is fully charged, the DSE9100 & DSE9200 series battery charger will switch to ECO-
POWER mode. This is a low power use standby mode.
Current Limit
If the load on the battery charger (battery charge demand+standing load) exceeds the maximum
current rating of the charger, the charging current is limited to the maximum rating of the charger and
the voltage is reduced.
The voltage will rise to the rated voltage again once the load drops below the maximum rating of the
charger.