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- Power Supply
- SEC-2430BRM
- Installation & Operating Manual
Samlexpower SEC-2430BRM Installation & Operating Manual
Summary of SEC-2430BRM
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Models : sec-2430brm sec-2440brm sec-2450brm please read this manual before operating your power supply. Installation & operating manual expandable 24 vdc power supply n+1 dc power system with battery backup / charging function.
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• provides n + 1 redundancy • allows connection of external batteries for backup • expand output power by adding power modules • up to 50 amps continuous power • volt / ampere meter • operation status l.E.D. • fan failure alarm and warning l.E.D. • remote monitoring and indication • 19” rack mount •...
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Table of contents topic page important safety instructions 1,2 description and application 3 design and principle of operation 3 cooling and warning for fan failure 3 front panel controls and indicators 4 rear panel controls 4,5 protections 5 installation and operation 6 operation of battery back-up...
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Important safety instructions please read before using your power supply. Caution ! All electrical installations must meet local and na- tional wiring codes and should be performed by a quali- fied electrician . Operation of cooling fan the heat produced is extracted by forced air cooling. In case a...
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Load and battery connections the load & battery terminals on the power supply have a tubu- lar hole of diameter 8mm (0.31”) with a set screw. Always ensure that the connections are secure and the screws are tightened properly. Loosely tightened connections result in excessive voltage drop and may ca...
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Description this is a 19 inch rack mount power supply which converts 120 v , 60 hz. Ac power into regulated 28 v dc , +/- 1% (at module output*) delivering up to a maximum of 50 a continuous ( up to 57.5 a surge ) with 5 base level pcb modules. There is provision to connect the power supply to an ex...
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A warning circuit monitors the operational condition of the fans. In case of a fan fail- ure, a buzzer will sound and the red led indicating “temp. Fault” will light up. The unit should be switched off immediately and the defective fan should be re- placed. Never load the unit when there is an audib...
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3. Remote monitoring and indications . A 25 pin d-sub connector has been provided for remote monitoring and indication. Pin connections are given below. Pins 2 and 16 are meant to indicate availability of input ac power. Cur- rent indication on pins 18 & 6 is 0.5mv per amp. (shunt ratio 25mv / 50a) ...
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Fan failure warning indicator and alarm : if forced air cooling is stopped due to failure of any one or both the fans, the red “ temp. Fault “ led will be illuminated and an alarm buzzer will be activated. The unit is required to be switched off immediately as loss of forced air cooling may result i...
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Regulated output voltage of 28 v +/ - 1% from the modules ( measured at screw ter- minals s5 and s6 (fig.1) is fed to the positive and negative dc bus bars and from there to the output terminals load+ and load- through the isolating schottky di- ode d1. Although the output voltage at the module term...
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8. If the input a.C. Power is interrupted, the external battery feeds the load instantane- ously through the schottky diode d2 (d2 will by-pass the resistors r1 & r2). Voltage available to the load will be approximately 0.4v lower than the battery voltage due to forward voltage drop across d2. When ...
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Installation and removal of power supply modules 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 120 v , 60 hz input power and unplug the power cord from the ma...
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10. 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 ...
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Removing a defective module 1. Remove the top cover plate by unscrewing the 10 screws. 2. Locate defective module. Remove the 6 screws from s1 to s6. 3. Remove the input power supply wires from terminals “l” and “n”. Insulate the wire terminals with insulating tape 4. Remove the led wire connection ...
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“ psm status ” led(s) does not light up · the associated module has become defective. The unit will still operate normally as the remaining working modules 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 maxim...
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Limiting electromagnetic interference (emi) 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 transformer based power supplies do not employ...
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5. The conducted rf noise from these power supplies is limited to the maximum allowable levels by internal filtration. The filtered rf noise currents are by- passed to the chassis of the power supply. The chassis is, in turn connected to the earth ground pin of the ac input power cord (for class 1 u...
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C. Twist the positive and negative wires from the output of the power supply to the radio d. The dc side positive and negative outputs of these power supplies are iso- lated from the chassis. As explained at paragraph 5 above, the noise currents are filtered to the chassis ground and the chassis gro...
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Specifications no. Of modules 3 4 5 input voltage range 105 to 125 v ac, 60 hz input current 12a 16a 20a output voltage (at terminals l+ & l- , see page 7) nominal, vdc 27.6v no load, vdc 27.8v full load, vdc 27.5v 27.45v 27.4v output regulation 1% (at module output s5, s6—fig. 1) output current con...
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Figure 1 - la y o u t of po w e r suppl y module s1 to s4 holes f o r 4 screw s to fa sten the m o dule to the chas sis s5 & s6 hole s f o r 2 scre w to co nn ect to the po sitive a n d n e gative ou tp ut bus bars. L & n l ( lin e ) an d n ( n e u tr a l ) ter m ina ls fo r 1 20v, 60 h z inp u t po...
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Continuity of “ daisy chain “ connections removing any end module (example psm1/psm5 in fig. 2 above) does not break the daisy chain. However, if any of the sandwiched modules (example psm 2,3,4) is removed, the daisy chain is broken. In this case, the unused female socket for the missing sandwiched...
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2 year limited warranty this product manufactured by samlex america, inc. (the “warrantor”) is warranted to be free from defects in workmanship and materials under normal use and service. This warranty is in effect for 2 years from the date of purchase by the user (the “purchaser”) if the defective ...
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Attach copy of receipt here for your records: date purchased: additional notes: purchased from: 20..
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Thank you for purchasing a samlex power supply product ! Samlex america inc. 110 –17 fawcett road coquitlam, b.C. V3k 6v2 canada ver.Feb_2005.