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Technical Support: +44(0)23 9269 6638 (option 3) 

 

PAK200824_01A   May 2017         ©2017 ELMDENE INTERNATIONAL LTD  

 
 
 
 
 
 
 
 
 

27.6V dc 10A Switch Mode Power Supply for Fire, Access and General Applications 

G2410BMU 

 
 

F

EATURES

 

 

 
The  G2410BMU  is  an  un-boxed  switch  mode  power  supply  ideal  for  use  in  Fire,  Access  Control  and 
General Applications. Its regulated 27.6V dc output will supply a total of 10 Amps continuous into the 
load, whilst also enabling battery charging. (7.2 Amps Load with 65Ah batteries, 10 Amps with 18Ah 
batteries). The power supply output features electronic short circuit protection under both mains and 
standby  battery  operation.  Maximum  battery  life  is  assured  through  continuous  active  battery 
monitoring  and  the  use  of  a  three  stage  charger  comprising  bulk,  absorb  and  temperature 
compensated  final  float  phase  depending  upon  battery  condition.  Once  fully  charged  the  product 
operates in Eco power saving mode, whereby it will check and top up battery charge every 2 hours, 
but  will  not  waste  energy  by  continuously  attempting  to  charge  a  fully  charged  battery.  This  also 
extends  the  operating  life  of  the  battery.    Deep  discharge  protection  prevents  premature  battery 
failure when operating from standby for extended periods. Two sets of volt free solid state relay fault 
outputs signal (i) loss of mains and (ii) battery fault, charger fault and loss of output. In addition there 
is an RS232 serial interface that can provide diagnostic and fault reporting information to supervisory 
systems.  
 
 

 

Up to 10A current to load at 27.6V dc nominal regulated output. 

 

Charging capability to support 18, 38 or 65Ah batteries with intelligent load enhancement. 

 

Electronic overload protection shuts down output until overload or short circuit is removed. 

 

Battery Monitor detects battery missing, low battery, short-circuit, reverse connection or circuit 

impedance (Ri) in excess of 300m

 caused by connector or wiring corrosion. 

 

Battery charging circuit is energised only when a battery is correctly connected and the battery 

voltage is greater than 14V. 

 

No loss of output during automatic connection of battery to load on loss of mains. 

 

Deep discharge protection disconnects battery from load when battery voltage falls to 21V. 

 

Fault indicator LED (Yellow) flashes on detection of output fault, battery fault, charger fault and 

mains failure. 

 

Mains indicator LED (Green) showing mains present. 

 

RS232 serial interface for fault reporting and diagnostics interface to OEM equipment. 

 

                

 

 
Elmdene International Ltd

 

 

Tel:  +44(0)23 9269 6638 

3 Keel Close, Interchange Park, 

 

Fax:  +44(0)23 9266 0483 

Portsmouth, Hampshire, PO3 5QD, UK 

Web:   

www.elmdene.co.uk

 

 

Summary of Contents for G2410BMU

Page 1: ...for extended periods Two sets of volt free solid state relay fault outputs signal i loss of mains and ii battery fault charger fault and loss of output In addition there is an RS232 serial interface that can provide diagnostic and fault reporting information to supervisory systems Up to 10A current to load at 27 6V dc nominal regulated output Charging capability to support 18 38 or 65Ah batteries ...

Page 2: ...h charging Imax A 220V With charging Imax A 110V 10 0A 10 0A 8 5A 10 0A 8 0A 7 5A 10 0A 7 2A 6 5A Battery Capacity eg PowerSonic model Yuasa model 2 x 17 18Ah 12V PS12170 NP17 12 2 x 38Ah 12V PS12380 NP38 12 2 x 65Ah 12V PS12650 NP65 12 Battery Charging Constant current bulk charging to 80 capacity within 24 hours Float charging to 100 within 48 hours Eco charging and check every 2 hours for 20 mi...

Page 3: ...uts EPS Fault GEN Fault Condition Possible Cause Action CLOSED CLOSED Normal operation Mains present Battery healthy None OPEN CLOSED Standby Mode Mains lost Battery driving load Investigate loss of mains CLOSED OPEN Fault Present Blown fuses Battery fault Overload Internal fault Investigate fault source using diagnostic LED Rectify fault where possible OPEN OPEN PSU Shutdown Mains lost Standby ba...

Page 4: ...rn to manufacturer 5 PULSES ON or OFF Battery Temperature Probe Fault Battery temperature monitor disconnected or damaged PSU running in Safe Mode Check temperature sensor connections and condition of sensor Replace if suspect ON CONTINUOUS ON or OFF Internal Fault Software fault detected PSU running in Safe Mode Return to manufacturer INSTALLATION This unit is only suitable for installation as pe...

Page 5: ...eat dissipation and adequate ventilation to avoid overheating of the unit or associated batteries Figure 1 Fixing points COMMISSIONING Mains Power Up 1 With no external connections made to the PSU connect the mains input wires to the terminal block ensuring that the mains isolator disconnect device is open Fasten wiring in place with cable tie to saddle Note Equipment must be earthed 2 Apply mains...

Page 6: ...battery terminals to each other 12 Connect the free Positive and Negative terminals of the batteries to the PCB terminals Batt and Batt using the cables provided See Figures 2 3 13 Connect the battery temperature sensor two white wires to the PCB terminals TMP Sens See Figure 3 14 If the batteries are housed remotely and the standard battery leads are not long enough use the extended battery lead ...

Page 7: ...or use by Service Personnel only There are NO USER SERVICEABLE parts inside There is no regular maintenance required of the PSU other than periodic testing and replacement of the standby battery Reference should be made to the battery manufacturer s documentation to determine typical expected battery life with a view to periodic replacement of the battery DIAGNOSTICS Local Diagnostics Green LED On...

Page 8: ...efore disposal of the product any batteries must be removed and disposed separately via an appropriate approved battery disposal route in accordance with all national and local regulations Package used batteries safely for onward transport to your supplier collection point or disposal facility Caution Risk of fire or explosion if bare battery wires are allowed to touch See Specification for batter...

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