Table of Contents
Advertisement
SECTION 11 |
NOTE: as explained under design & principle of operation, it is likely that the minimum
internal preload current for the new value of the output voltage may not be sufficient
to provide adequate feedback signal strength resulting in shut down of one or more
PSM(s) when no external load is present (the associated PSM status LED will flash and
also, the associated signal for remote indication will oscillate between high and low). In
such a case, apply an external load to increase the feed back signal strength. If there is
no other defect, the PSM(s) that were shut down will also operate normally.
Installation and Removal of Power Supply Modules
i
INFO
NOTE: installation and removal of power supply modules should be performed
only by qualified personnel.
!
CAUTION!
Before removing a defective module or installing a new one, switch OFF the 120V,
60HZ input power and unplug the power cord from the mains outlet. Please refer
to the layout diagram of the module at Figure 1.
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 / SEC-2440BRM by steps of 10A to a maximum of
50A. For example, SEC-2430BRM (30A) can be upgraded to SEC-2440BRM (40A) by adding
1 additional optional 10A module (SEC-1024MPSB) or to SEC-2450BRM (50A) by adding 2
additional optional 10A modules (SEC-1024MPSB).
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 under 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). The black wire
is required to be connected to the male tab terminal marked l (Fig.1) And white wire
is required to be connected to the male tab terminal marked N (Fig.1). Do not connect
these wires till step 8 below.
Installation & Removal of Modules
SAMLEX AMERICA INC. | 15
Advertisement
Table of Contents
