Table of Contents
Related Manuals for Samlexpower SEC-2430BRM
Summary of Contents for Samlexpower SEC-2430BRM
- Page 1 EXPANDABLE 24 VDC POWER SUPPLY N+1 DC Power System with Battery Backup / Charging Function MODELS : SEC-2430BRM SEC-2440BRM SEC-2450BRM & INSTALLATION OPERATING MANUAL Please read this manual before operating your power supply.
- Page 2 • 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. •...
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Page 3: Table Of Contents
TABLE OF CONTENTS Topic Page Important safety instructions Description and application Design and principle of operation Cooling and warning for fan failure Front panel controls and indicators Rear panel controls Protections Installation and operation Operation of battery back-up Output voltage adjustment Installation and removal of modules 9,10 Trouble shooting... -
Page 4: Important Safety Instructions
FROM A 20A CIRCUIT AND MUST BE PLUGGED INTO A 20A AC OUTLET WHICH WILL ACCEPT THE 20A MOULDED PLUG PROVIDED WITH THE POWER CORD. SEC-2430BRM MAY BE POWERED FROM A 15A CIRCUIT. A 15A PLUG HAS BEEN PROVIDED SEPARATELY WHICH CAN BE USED TO REPLACE THE 20A PLUG FOR THE SEC-2430BRM. - Page 5 # 4 AWG | UP TO FOR SEC-2440BRM - 40 A # 6 AWG | 6’ FOR SEC-2430BRM - 30 A # 8 AWG | DISTANCE ENSURE THAT THE AC POWER IS SWITCHED OFF WHEN ANY DEVICE IS BE- ING CONNECTED TO THE POWER SUPPLY.
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Page 6: Description And Application
SEC-2440BRM has 4 modules of 10A each = 40 Amps • SEC-2430BRM has 3 modules of 10A each = 30 Amps COOLING AND WARNING FOR FAN FAILURE The heat generated due to internal power dissipation is removed by forced cooling through two high power D.C. -
Page 7: Front Panel Controls And Indicators
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. -
Page 8: Protections
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) ITEM NUMBER FUNCTION... -
Page 9: Installation And Operation
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 in major damage to the unit. -
Page 10: Operation Of Battery Back-Up
OPERATION OF BATTERY BACK-UP WARNING! THE BATTERY SHOULD BE LOCATED IN A WELL VEN- TILATED AREA TO SAFELY DISSIPATE HYDROGEN GAS PRODUCED DURING THE CHARGING PROCESS. Please refer to the schematic at fig. A above. 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. -
Page 11: Output Voltage Adjustment
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. -
Page 12: Installation And Removal Of Modules
The output voltage of the paralleled modules or the common DC bus (before the Schottky Diodes D1) can be adjusted between 26.8 V and 28.5 V by adjusting the voltage of each module individually as per the following procedure ( This procedure is explained for SEC-2450BRM which has 5 modules ). - Page 13 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 .
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Page 14: Trouble Shooting
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. Remove the input power supply wires from terminals “L” and “N”. Insulate the wire terminals with insulating tape 4. - Page 15 “ 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 maximum rated output of the remaining modules.
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Page 16: Limiting Electromagnetic Interference
LIMITING ELECTROMAGNETIC INTERFERENCE (EMI) 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 high frequency switching voltages and will be quieter as compared to switching type of supplies ). - Page 17 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 units).
- Page 18 Twist the positive and negative wires from the output of the power supply to the radio 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 ground is connected to the earth ground through the earth ground pin of the AC power outlet receptacle.
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Page 19: Specifications
SPECIFICATIONS SEC-2430BRM SEC-2440BRM SEC-2450BRM NO. OF MODULES INPUT VOLTAGE RANGE 105 TO 125 V AC, 60 HZ INPUT CURRENT OUTPUT VOLTAGE (At terminals L+ & L- , See page 7) NOMINAL, VDC 27.6V NO LOAD, VDC 27.8V FULL LOAD, VDC 27.5V... - Page 20 Figure 1.
- Page 21 Figure 2. “ Daisy Chaining “ of “Share BUS “ jumpers ( Jump 1 ) PSM 1 PSM 2 PSM 3 PSM 4 PSM 5 PCB ( Printed Circuit Board ) Jump 1 Jump 1 Jump 1 Jump 1 Jump 1 1.
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Page 22: Warranty Information
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 product is within the warranty period, the Purchaser should contact the place of purchase to obtain a Return Authorization Number. -
Page 23: Notes
Attach copy of receipt here for your records: Date purchased: Purchased from: Additional notes:... - Page 24 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...