SamplexPower SEC-1212CE, Owner'S Manual

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SAMLEX AMERICA, INC. | 7
SECTION 3 | Product Overview
COOLING (SEC-1212CE)
SEC-1212CE is cooled by convection. PLACE THE SEC-1212CE UNIT IN A WELL VENTILATED
OPEN AND COOL AREA. DO NOT BLOCK THE VENTILATION OPENINGS ON THE SIDES.
Cooling & Fan Control/Thermal Shut Down (SEC-1223CE)
SEC-1223CE is cooled by convection and forced air. A temperature controlled fan has been
provided to improve cooling at higher loads. The fan is controlled by a sensor mounted
on the power transformer. THE FAN WILL BE OFF AT LOWER LOADS. It will come on only
when the temperature of the power transformer is ≥ 60ºC ± 5ºC / 140ºF ± 9ºF due to higher
loads or higher ambient temperature or poor cool air circulation around the unit. The fan
will switch off automatically at ≤ 40ºC ± 5ºC / 104ºF ± 9ºF. In case the fan fails or the air
flow is blocked, a second temperature sensor mounted on the power transformer will ac-
tivate over temperature shut down at ≥ 105ºC ± 5ºC / 221ºF ± 9ºF. The output voltage will
be automatically resumed once the unit cools down to ≤ 75ºC ± 5ºC / 167ºF ± 9ºF.
PLACE
THE SEC-1223 UNIT IN A WELL VENTILATED OPEN AND COOL AREA. DO NOT BLOCK THE
OPENINGS AT THE FAN DISCHARGE ON THE BOTTOM AND THE SUCTION OPENINGS ON
THE SIDES .
BATTERY CHARGING & BATTERY BACK-UP
WARNING!
These units are power supplies and not battery chargers. Do not connect these
units directly to a battery.
These units should NOT BE DIRECTLY CONNECTED TO A BATTERY for charging or for
battery back-up. Battery charging and battery back-up may be undertaken only when the
battery is connected through suitable external isolating diodes and charge limiting resistor.
The isolating diode will ensure that the battery does not back power the power supply.
When a battery is deeply discharged, it will initially draw a very large charging current and
thus, will force the power supply into current limit mode for prolonged periods. This is
harmful for the power supply. The charge limiting resistor will limit the charging current,
thereby, ensuring that the maximum charging current is well below the current limit value
of the power supply.
i
INFO
It is recommended that optional battery back-up module BBM-1225 may be used
to convert SEC-1212CE/SEC-1223CE for battery back-up application.