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UPGRADING TO HIGHER CAPACITY – INSTALLING ADDITIONAL MODULE(S)
Additional optional module(s) (Model No. SEC-1024MPSB) can be added to upgrade
the output current capacity of SEC-2430BRM and SEC-2440BRM by steps of 10A to a
maximum of 50A. For example, an SEC-2430BRM (30 A, with 3 modules) can be up-
graded to SEC-2440BRM (40A) by adding 1 more module or to SEC-2450BRM by add-
ing 2 more modules .
The optional module SEC-1024MPSB comes with an LED and LED holder. It's output
voltage is pre-set at 28 Volts
The procedure to install additional module(s) is as follows :
1.
Remove the top cover plate by unscrewing the 10 screws
2.
Each module sits on 6 stand-offs relative to the holes S1 to S6 (Fig.1). Additional module(s)
are to be installed in the vacant space(s) adjacent to the right of the existing module. Remove
the screws from the 6 stand-offs for the adjacent vacant space for the module.
3.
Place the module on the stand-offs with the L an N terminals (Fig.1) towards the front panel.
Align the holes and fix the module with the 6 screws. WARNING ! Please ensure that screws
S5 and S6 are very tight as the pads under these two screws connect the output of the
module(s) to the DC bus bar underneath. A loose connection under these screws will
result in sparking , overheating and consequent damage to the module
4.
Each module has independent AC power input wires. Locate unused pair of AC input wires.
(Black and white with insulated female quick connect terminals). Connect the black wire to the
male tab terminal marked L (Fig.1) and white wire to the male tab terminal marked N (Fig.1)
5.
Green LED indication for proper operation of the module is provided from 2 pin male quick
connect terminals marked LED1 and LED2 (Fig.1). One LED terminal is used for the front
panel LED under "PSM Status (1 to 5)" and the other for remote indication through the D-Sub
connector. Connection to the D-Sub connector for remote indication is made using color coded
pair of wires for each of the 5 modules ( Please see the colour code for PCB 1 to 5 under
REMOTE MONITORING AND INDICATION on Page 5) . An LED holder and a green LED
with wire and female quick connect terminal are provided with the new module for connecting
to the front panel. The vacant hole(s) for the front panel LEDs are closed with plastic plug(s).
Remove the plastic plug from the vacant hole for the LED under the existing bottom most LED.
Insert the LED holder in this hole from the outside. Insert the green LED from the inside and
push it till it locks. Connect the female quick connect terminal of the LED to the male quick
connect terminal marked LED1 / LED2 (Fig.1). If remote LED indication is also required, then
connect the female quick connect terminal of the corresponding colour coded wire for the
remote LED connection to the male quick connect terminal marked LED1/ LED2 (Fig.1)
6.
All the connected modules operate under forced current share control through a daisy chained
SHARE BUS formed by interconnecting each module through the male quick connect terminal
marked JUMP1 (Fig.1 & 2). A wire with 5 female quick connect terminals is provided for the
above connection. Locate the unused female quick connect terminal(s) of this wire and con-
nect it to the male quick connect terminal marked JUMP1 (Fig.1)
7.
Use cable ties to secure all loose wiring
8.
Replace the top cover. Power on the unit and confirm that the "PSM Status" LEDs of the
newly installed modules are lighted.
10.
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