Samlexpower SEC-1212CE Installation instructions

MODELS : SEC-1212CE
SEC-1223CE
INSTALLATION & OPERATING MANUAL
SWITCH MODE DC POWER SUPPLY
REGULATED DC POWER SUPPLY

TABLE OF CONTENTS
Topic Page
Important safety instructions 1
Description and features 2
Connection and operation 2
Cooling and fan control 3
Battery charging and back up 3
Trouble shooting 4
Switching power supplies & RF Noise 5,6
Specifications 7
Warranty information 8
Notes: 9

WARNING—TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. THERE
ARE NO USER SERVICEABLE PARTS INSIDE—REFER TO 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 Samlex dealer
for any service or repair. Incorrect assembly may result in electric shock or fire.
2.) To reduce the risk of electric shock, unplug power supply from outlet before at-
tempting 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 num-
ber, 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 OPERATE 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 pro-
vided. If the cord will not fit the outlet, have a proper outlet installed by qualified elec-
trician. 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 ).
CAUTION !
1.
!! RISK OF ELECTRIC SHOCK
DO NOT OPEN

DESCRIPTION
SEC-1212CE / SEC-1223CE are switched mode power supplies which con-
vert 230 VAC, 50 HZ to regulated 13.8 VDC based on pulse width modula-
tion ( PWM ) control.
FEATURES
∫BASED ON SWITCHED MODE TECHNOLOGY AND PWM CONTROL
∫COMPACT AND LIGHTWEIGHT
∫HIGH EFFICIENCY AND LESS HEAT DISSIPATION
∫PROTECTED AGAINST SHORT CIRCUIT, OVER CURRENT AND
OVER VOLTAGE (THROUGH PWM CONTROLLER)
∫SEC-1212CE IS CONVECTION COOLED. SEC-1223CE HAS FORCED
AIR COOLING AND OVER TEMPERATURE SHUT DOWN
∫CE MARKED
∫COMPLIES WITH EUROPEAN EMISSION AND IMMUNITY STAN-
DARDS
CONNECTION AND OPERATION
NOTE! The DC output connector has a tubular hole of diameter 0.2” (5mm)
with a set screw. For a firm connection, crimp/solder a pin type copper termi-
nal 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 off your 12 V DC device and connect it’s positive
and negative to the RED ( Positive ) and WHITE ( Negative ) terminals re-
spectively. Ensure that the connections are secure and tight. Plug the power
supply into the AC outlet. Press the ON/Off 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.
Your 12 V DC device may now be switched on.
2.

COOLING AND FAN CONTROL / THERMAL SHUT DOWN (SEC-1223CE)
SEC-1212CE is cooled by convection.
PLACE THE UNIT IN A WELL VENTILATED OPEN AND COOL AREA.
DO NOT BLOCK THE VENTILATION OPENINGS ON THE SIDES
SEC-1223CE is cooled by convection and forced air. A temperature con-
trolled 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 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.
PLACE THE UNIT IN A WELL VENTILATED OPEN AND COOL AREA.
DO NOT BLOCK THE OPENINGS AT THE FAN SUCTION ON THE BOT-
TOM AND THE DISCHARGE OPENINGS ON THE SIDES .
BATTERY CHARGING AND BATTERY BACK-UP
WARNING ! THESE UNITS ARE POWER SUPPLIES AND
NOT BATTERY CHARGERS. DO NOT CONNECT THESE UNITS DI-
RECTLY 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 peri-
ods. This is harmful for the power supply. The charge limiting resistor will
limit the charging current, thereby, ensuring that the maximum charging cur-
rent is well below the current limit value of the power supply.
WE OFFER OPTIONAL BATTERY BACK-UP AND CHARGING MOD-
ULE . PLEASE CONTACT OUR CUSTOMER SERVICE
3.
!

TROUBLESHOOTING - GENERAL
PROBLEM : Power ON/OFF switch does not illuminate when turned on.
PROBABLE CAUSE SUGGESTED REMEDY
No power in the AC outlet Check there is power in the outlet.
AC side fuse inside the power Replace the fuse inside the unit. See
supply is blown fuse ratings at page 8
PROBLEM : AC side fuse blows as soon as power is turned on.
PROBABLE CAUSE SUGGESTED REMEDY
Unit is defective Call technical support.
PROBLEM : The output voltage is 0 V or very low
PROBABLE CAUSE SUGGESTED REMEDY
Input voltage is very low Check that the input voltage is 230 VAC
The unit is in current limit condition Check the output terminals are not
due to overload caused by large reactive shorted. Remove the load. If the output
loading or by the output being voltage gets restored, the load is shorted
short circuited or is offering large reactive impedance.
Unit is shut down due to over Check that the fan has not failed or
temp. (SEC-1223CE) the vent openings are not blocked
PROBLEM : Output voltage drops as soon as the load is switched on
PROBABLE CAUSE SUGGESTED REMEDY
The unit is going into current
limit protection mode
4.
Reduce the load current to less than
the current limit value. Motors,
pumps, compressors, relays, incan-
descent and halogen lamps and large
capacitors in the input section of the
DC devices draw very high inrush or
starting currents of up to 10 times
their normal operating currents. En-
sure that these inrush/starting cur-
rents are below the current limit value
of the power supply.

SWITCHING POWER SUPPLIES AND RF NOISE
1. Switched mode power supplies ( SMPS ) employ high frequency
switching and thus, are a source of radio interference, a recipient of radio
interference and a conduit of radio interference. ( Older linear type trans-
former based power supplies do not employ high frequency switching volt-
ages and will be quieter as compared to switching type of supplies ).
2. The primary emission sources originate in the switching devices due
to their fast switching current transitions: harmonics of the switching fre-
quency and broadband noise created by under-damped oscillations in the
switching circuit. The secondary source is from the bridge rectifier, both rec-
tifier noise and diode recovery. The AC input rectifier / capacitor front end of
the switching power supplies ( excepting those with power factor correction )
are notorious for generating power supply harmonics due to the non linear
input current waveform. The noise is both conducted and radiated through
the input power cord and the DC output wiring to the radio.
3. Switching power supplies are also recipients of radio interference.
The normal operation of the power supply can be disturbed due to RF noise
getting coupled into the power supply. Thus, the power supply may generate
excessive RF noise and lose output voltage regulation due to excessive
transmitter energy being coupled through the AC / DC lines to the power
supply’s regulator feedback path. This may be due to antenna being too
close or due to the antenna or feed system not radiating properly. First
check the antenna system SWR. Then, if necessary, relocate either the an-
tenna or the power supply farther apart.
4. The receiver may “hear” the power supply. A slowly moving, slightly
buzzing carrier heard in the receiver may be caused by the antenna being
too close. As with the transmitter related noise pick up, a loose coaxial con-
nector or a broken or a missing ground may aggravate this problem. Nor-
mally these noises will be below the background or “band” noise. Increase
the separation between the power supply and the receiving antenna. Use an
outdoor antenna. This will reduce the amount of signal picked up from the
power supply and also increase the amount of the desired signal.
5. The conducted and radiated RF noise from these power supplies is
limited by internal filtration. These RF noise currents are filtered and
bypassed to the chassis of the power supply. The chassis is, in turn,
connected to the earth ground pin of the ac input power cord. Thus, the
chassis of the power supply is connected to the earth ground of the 230
VAC distribution system. The net RF noise generated by these power
supplies complies with the limits laid down in the European Standards for
emissions and immunity.
5.

6. Following additional guidelines may be followed to reduce the ef-
fects of RF noise:
a. Use additional appropriate AC radio frequency interference (RFI)
power line filter immediately before the ac input of the power
supply. Recommended: Corcom Inc. ( www.cor.com ) “Q” se-
ries. Filtered, ferrite coated cord set ( www.emceupen.com ) is
another choice. These cord sets, with integral line interference
filters, reduce common and differential mode interferences over a
wide frequency range. Because they are shielded, they are also
effective against radiated interferences. In addition to the built-in
filter networks, the cable conductors are coated with an RF ab-
sorbing ferrite compound. This provides additional attenuation at
high frequencies that is lacking in most regular LC filters. The RF
absorption of the ferrite-coated cable avoids resonance's at high
frequencies, reducing the conducted and radiated RF noises
even further
b. Use additional appropriate DC radio frequency interference (RFI)
power line filter immediately after the dc output of the power sup-
ply. Recommended: Corcom Inc.(www.cor.com ) “DA” / “DC”
series
c. The positive and negative terminals of the dc output side of the
power supply are isolated from its chassis. As pointed out at para
5 above, all the noise currents that are internally filtered are by-
passed to the chassis of the power supply and onward to the
earth ground of the 230 VAC system through the earth ground
pin of the power cord. Therefore, the negative terminal of the
power supply should never be connected / bonded to the chassis
of the power supply.
d. Twist the positive and negative wires from the output of the
power supply to the radio
6.

7.
SPECIFICATIONS
INPUT VOLTAGE
(NOMINAL): 230 VAC, 50 HZ
OUTPUT VOLTAGE: 13.8 VDC +/- 1%
OUTPUT RIPPLE & NOISE: SEC-1212CE 120 mV
(ON FULL LOAD, PEAK TO PEAK) SEC-1223CE 150 mV
OUPUT CURRENT,CONTINUOUS: SEC-1212CE 10 A
SEC-1223CE 23 A
CURRENT LIMIT: SEC-1212CE 14 A
SEC-1223CE 25 A
COOLING: SEC-1212CE CONVECTION
SEC-1223CE TEMPERATURE CONTROLLED
FAN
PROTECTIONS: OVER CURRENT, SHORT CIRCUIT AND OVER
VOLTAGE (THROUGH PWM CONTROLLER ).
OVER TEMPERATURE SHUT DOWN FOR
SEC-1223CE
FUSE RATING: 5 MM X 20 MM GLASS FUSE, 250 V, slow blow
SEC-1212CE 2A
SEC-1223CE 4A
AC INPUT CONNECTION: DETACHABLE POWER CORD WITH EUROPEAN
“SCHUKO” PLUG.
DC OUTPUT CONNECTION: TUBULAR HOLE DIA 0.2”(5MM) WITH SET SCREW
SAFETY STANDARD: EN60950
EMI/EMC STANDARD: EN55022 class B; EN6100-3-2,3;
EN61000-4-2,3,4,5,6,8,11
ENVIRONMENTAL TEMP. RANGE: 0-40
o
C
DIMENSIONS
( W X D X H ), INCHES 7.0 X 8.25 X 2.2
WEIGHT SEC-1212CE 3 LBS. NET
SEC-1223CE 3.5 LBS. NET
NOTE : SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

3 YEAR Limited Warranty
SEC-1212CE/SEC-1223CE manufactured by Samlex America, Inc. ( the “ Warrantor “ ) is war-
ranted to be free from defects in workmanship and materials under normal use and service.
This warranty is in effect for 3 years from the date of purchase by the user ( the “ Purchaser “ )
In any case part of the equipment proves to be defective, the purchaser should do the
following :
1. Prepare a written statement of the nature of the defect to the best of the Purchaser’s
knowledge, and include the date of purchase, the place of purchase, and the Purchasers
name, address and telephone number.
2. Call Samlex America, Inc. 1-800-561-5885 or 1 [phone] and request a returning
merchandise authorization number ( RMA ).
3. Return the defective part or unit along with the statement at the Purchaser’s expense to
the Warrantor ; Samlex America Inc., #110 - 17 Fawcett Road, Coquitlam, B.C. V3K 6V2
Canada. The RMA number must be marked clearly on the outside of the packaging.
If upon the Warrantor’s examination the defect proves to be the result of defective material or
workmanship, the equipment will be repaired or replaced at the Warrantor’s option without
charge, and returned to the Purchaser at the Warrantor’s expense.
No refund of the purchase price will be granted to the Purchaser, unless the Warrantor is un-
able to remedy the defect after having a reasonable number of opportunities to do so.
Warranty service shall be performed only by the Warrantor. Any attempt to remedy the defect
by anyone other than the Warrantor shall render this warranty void.
There shall be no warranty for defects or damages caused by faulty installation or hook-up,
abuse or misuse of the equipment including exposure to excessive heat, salt or fresh water
spray, or water immersion.
No other express warranty is hereby given and there are no warranties which extend beyond
those described herein. This warranty is expressly in lieu of any other expressed or implied
warranties, including any implied warranty of merchantability, fitness for the ordinary purposes
for which such goods are used, or fitness for a particular purpose, or any other obligations on
the part of the Warrantor or its employees and representatives.
There shall be no responsibility or liability whatsoever on the part of the Warrantor or its em-
ployees and representatives for injury to any persons, or damage to person or persons, or dam-
age to property, or loss of income or profit, or any other consequential or resulting damage
which may be claimed to have been incurred through the use or sale of the equipment, includ-
ing any possible failure of malfunction of the equipment, or part thereof.
The Warrantor assumes no liability for incidental or consequential damages of any kind.
8.

Notes :
Attach your original bill of sale here.
Model No:
Date purchased :
Place of purchase :
Purchase price :
Serial number :
SEC-1212CE SEC-1223CE
9.

Thank you for purchasing a Samlex power supply product !
Samlex America Inc.
110 –17 Fawcett Road
Coquitlam, B.C. V3K 6V2
Canada
SEC-1212CE/SEC1223CE 020304