Specifications

TROUBLE SHOOTING
GREEN LED(S) CONNECTED TO LED 1/ LED 2 DOES
NOT LIGHT UP
• The module has become defective
WHEN TWO OR MORE UNITS ARE OPERATING IN PARALLEL
• The associated module has become defective. The unit
will still operate normally as the remaining working
module(s) will share a higher load. The unit will go into
current limit and the output voltage will drop if the load
drawn is more than the combined maximum rated
output of the remaining module(s). Reduce the load so
that the maximum load drawn is less than the
combined maximum rated output of the working
module(s).
OUTPUT VOLTAGE DROPS
• The module has gone into current limit
WHEN TWO OR MORE UNITS ARE OPERATING IN PARALLEL
• The unit has gone into current limit as the load being
drawn is more than the combined maximum rating of
the working module(s) This may also result if one or
more modules has failed . Check that all the modules
are operating properly. If a module has failed, its green
LED, connected to LED1/LED2 would extinguish.
Reduce the load drawn to a value less than the
combined maximum rated output of the working
module(s). If the voltage does not rise to the rated
voltage of 28 V, then switch off all the loads. If the
voltage in this condition is also low, switch off the unit
and contact technical support
9.
INSTALLATION AND OPERATION - AS COMPO-
NENT PSM IN SAMLEX N+1 DC POWER SYSTEM SE-
RIES SEC-24XXBRM
If the module is being installed in the Samlex N+1 DC
Power System Series SEC-24XXBRM, read the instructions
in the associated manual of the N+1 DC Power System.
INSTALLATION & OPERATION
- AS OPEN FRAME
POWER SUPPLY
• Please refer to Fig. 1 on page 4.
• The AC input should be fed through a proper external
switch and breaker based on rated current of each
module at approx. 4A.
• Forced air cooling should be provided.
• Connect the AC input to quick disconnect terminals
marked “L” (Line) & “N” (Neutral). Pads under holes
S1,S3 & S4 should be connected to Earth Ground.
Color code for wires is:
NEMA INTERNATIONAL
“ L” (Line) Black Brown
“N” (Neutral) White Blue
Earth Ground Green Green with Yellow stripe
• The output is taken from the pads under holes S5(+)
and S6(-).
• Operation status green L.E.D’s are connected to con-
nectors LED1/LED2 (Both the connectors are in paral-
lel. One for local indication and the other for remote
indication.)
• Switch on AC power, The green LED’s connected to
LED 1/ LED2 will light.
• Output voltage will read 28V. It can be adjusted be-
tween 26.8 & 28.5 V by potentiometer marked VR1.
See page 4.
• Switch on the DC load. The green LED should remain
lighted.
6.