Samlex America SEC-1223 User Manual
Desktop Switching
Power Supplies
Owner's
Manual
Please read this
manual before
operating your
unit
Model:
SEC-1212
SEC-1223
TABLE OF CONTENTS
Topic Page
Important safety instructions 2
Description and features 3
Connection and operation 4
Cooling and fan control 4
Battery charging and back up 5
Trouble shooting 5,6
Limiting Electromagnetic Interference 7
Switching Power Supplies & RF Noise 8,9,10
Specifications 11
Warranty 12
CAUTION !
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING—TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. THERE ARE
NO USER SERVICEABLE P ARTS INSIDE—REFER T O QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
Please read before using your power supply .
1.) It Is recommended that you return your power supply to a qualified dealer for any
service or repair. Incorrect assembly may result in electric shock or fire.
2.) To reduce the risk of electric shock, unplug the power supply from the outlet
before attempting any maintenance or cleaning. Turning off controls will not reduce
this risk.
3.) An extension cord should not be used unless absolutely necessary. If an exten-
sion cord must be used make sure that the pins on the plug are the same
number, size and shape as those of the original power supply plug.
4.) Place the unit in an area that will allow air to flow freely around the unit. DO NOT
block or obstruct vent openings on the side/bottom of the unit.
5.) Keep the unit away from moisture and water.
6.)
NEVER OPERA TE THE UNITS IN PARALLEL
WARNING
Your power supply should be grounded to reduce the risk of electric shock. The
power supply is equipped with grounding conductor and grounding plug.
The cord must be plugged into an outlet that is properly installed and grounded in
accordance with all local codes and ordinances. Never alter the AC cord of plug
provided. If the cord will not fit the outlet, have a proper outlet installed by qualified
electrician. Improper connection can result in risk of electric shock.
DO NOT USE THE POWER SUPLY FOR DIRECT CHARGING OF BATTERY OR
DIRECT CONNECTION TO A BATTERY FOR BATTERY BACK-UP. ( Please read
the section on Battery Back-up ).
2.
DESCRIPTION
SEC-1212/SEC-1223 are switched mode power supplies which convert 120
V AC, 60 HZ to regulated 13.8 VDC based on pulse width modulation
( PWM ) control.
FEA TURES
+ BASED ON SWITCHED MODE TECHNOLOGY AND PWM CONTROL
+ COMPACT AND LIGHTWEIGHT
+ HIGH EFFICIENCY AND LESS HEAT DISSIP A TION
+ PROTECTED AGAINST SHORT CIRCUIT , OVER CURRENT AND
OVER VOL TAGE (THROUGH PWM CONTROLLER)
+ SEC-1212 IS CONVECTION COOLED. SEC1223 HAS FORCED AIR
COOLING AND OVER TEMPERA TURE SHUT DOWN
+ UL LISTED & APPROVED
+ COMPLIES WITH FCC P ART 15(B) FOR RADIA TED & CONDUCTED
NOISES FOR CLASS-B DIGITAL DEVICES
3.
CONNECTION AND OPERATION
WARNING ! Before plugging the unit to the AC outlet, please check that
your local supply voltage is 120 V AC.
NOTE: The DC output connector (RED + & BLACK -) has a tubular hole of
dia. 0.2”(5mm) with a set screw. For a firm connection, crimp/solder a pin
type copper terminal on the cable ends of your 12V DC device.
Ensure that the power supply’s ON/OFF switch is off and it is unplugged
from the AC outlet.. Switch of f your 12 V DC device and connect it’s
positive and negative to the RED ( Positive ) and BLACK ( Negative )
terminals respectively . Ensure that the connections are secure and tight.
Plug the power supply into the AC outlet. Press the ON/Of f switch of the
power supply to ON and observe that the neon indicator in the switch
illuminates. If the indicator fails to light , recheck the connection, AC outlet
and the fuse inside the power supply .
Y our 12 V DC device may now be switched on.
COOLING (SEC-1212)
SEC-1212 is cooled by convection. Operate the unit in a cool, well ventilated space.
COOLING AND FAN CONTROL / THERMAL SHUT DOWN (SEC-1223)
SEC-1223 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 F AN WILL
BE OFF AT LOWER LOADS. It will come on only when the temperature
of the power transformer is above 70ºC due to higher loads. In case the fan
fails or the air flow is blocked, a second temperature sensor mounted on
the power transformer will activate over temperature shut down at 100ºC.
The output voltage will be automatically resumed once the unit cools down.
OPERATE THE UNIT IN A WELL VENTILA TED OPEN AND COOL AREA.
DO NOT BLOCK THE OPENINGS AT THE FAN DISCHARGE ON THE
BOTTOM AND THE SUCTION OPENINGS ON THE SIDES .
4.
Loading...