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

 

PAK200610_01G   Jan 2021        ©2019 ELMDENE INTERNATIONAL LTD  

 
 
 
 
 
 
 
 
 

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

STX2410-MOD 

 
 

F

EATURES

 

 

 
The STX2410-MOD 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 the batteries are charged for 4 hours in every 24 hour 
period while still being continuously monitored. This reduces wasted energy in charging already fully 
charged  batteries  and  extends  their  working  life.  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. 

 

                        

 

0843-CPR-0216 14 (UL) 

2531-CPR-CSP11215 20 (DBI) 

 

 
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 STX2410-MOD

Page 1: ...eriods 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 provid...

Page 2: ...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 Interlogix model 2 x 17 18Ah 12V PS12170 NP17 12 BS131N 2 x 38Ah 12V PS...

Page 3: ...s 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 mai...

Page 4: ...n 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...

Page 5: ...at 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 conn...

Page 6: ...CT the other two 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 Co...

Page 7: ...r 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 Refere...

Page 8: ...proved 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 Ri...

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