Samlexpower SEC-1212 Installation & Operating Manual page 7

PROBLEM : The output voltage is 0 V or very low
PROBABLE CAUSE
Input voltage is very low
The input voltage has been converted
to 240 VAC but the unit has been
plugged into 120 VAC outlet
The unit is in current limit condition
due to overload caused by large reactive
loading or by the output being
short circuited
Unit is shut down due to over
temp. (SEC-1223)
PROBLEM : Output voltage drops as soon as the load is switched on
PROBABLE CAUSE
The unit is going into current
limit protection mode
SUGGESTED REMEDY
Check that the input voltage is 120VAC
or 240 VAC as selected
Power the unit from the proper AC voltage
Check the output terminals are not
shorted. Remove the load. If the output
voltage gets restored, the load is shorted
or is offering large reactive impedance.
Check that the fan has not failed or
the vent openings are not blocked
SUGGESTED REMEDY
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.
5.