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Elmdene STX2405-C Manual

Elmdene STX2405-C Manual

27.6v dc 5 amp switch mode power supply for fire – en54-4:1997 +a1 +a2

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Elmdene International Ltd
3 Keel Close, Interchange Park,
Portsmouth, Hampshire, PO3 5QD, UK
27.6V dc 5 Amp Switch Mode Power Supply for Fire – EN54-4:1997 +A1 +A2
STX2405-E
STX2405-C
F
EATURES
The STX2405-x is an EN54-4:1997 +A1 +A2 approved power supply ideal for use in Fire and Smoke and
ventilation control Systems. Its regulated 27.6V dc output will supply up to 5 Amps continuous into
the load, in addition to providing up to 850mA for charging the standby batteries up to 17Ah. 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 two stage charger, comprising bulk 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 output signal
(i) loss of mains and (ii) battery fault, charger fault and loss of output. In addition there is an optional
plug in serial interface that can provide diagnostic and fault reporting information to supervisory
systems.
Certified by UL to EN54-4:1997 +A1 +A2.
Up to 5A current to load at 27.6V dc nominal regulated output.
Charging capability to support 7 or 17/18Ah batteries.
Electronic overload protection shuts down output until overload or short circuit is removed.
Battery Monitor detects battery missing, low battery, short-circuit or reverse connection or circuit
impedance (Ri) in excess of 500m caused by connector or wiring problem/corrosion within 4 hours.
Battery charging circuit is energised only when a battery is correctly connected, and the battery voltage
is greater than 14 V.
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 below 21 V.
Diagnostic indicator LED (Orange) (Internal).
Fault indicator LED (Yellow) flashes on detection of output fault, battery fault, charger fault and mains
failure.
Mains indicator LED (Green) showing mains present Indicators check at start-up.
Optional RS232 serial interface for fault reporting and diagnostics.
Technical Support: +44(0)23 9269 6638 (option 3)
Tel: +44(0)23 9269 6638
Fax: +44(0)23 9266 0483
Web:
PAK200581_02E June 2020
0843-CPR-0215 14 (UL)
2531-CPR-CSP11214 (DBI)
www.elmdene.co.uk
©2020 ELMDENE INTERNATIONAL LTD
1

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Summary of Contents for Elmdene STX2405-C

  • Page 1 Fault indicator LED (Yellow) flashes on detection of output fault, battery fault, charger fault and mains failure. • Mains indicator LED (Green) showing mains present Indicators check at start-up. • Optional RS232 serial interface for fault reporting and diagnostics. Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 2: Specification

    5.9 Kg Material 1.2mm steel white powder coated Environmental Temperature – Operating -10 to +40°C (operating) 75% RH non-condensing Temperature - Storage -20 to +80°C (storage) Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 3 Temperature sensor Thermistor input from supplied battery terminal thermistor. BATT + / - Connection to back up battery using supplied battery lead Optional Serial interface 5 pin header (For details contact Elmdene Technical Support) IGNALLING AND IAGNOSTICS Fault Outputs EPS Fault...
  • Page 4: Installation

    (i.e. close fitting with respect to cable sizing). Note that the bushes should meet a minimum flammability specification of UL94 HB. All cabling should be securely fastened in position using a cable tie through the saddles provided. Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 5 WARNING: ALWAYS FIT 2 BATTERIES and wire in series, Fit 2 x 12V the product will NOT work with a single 12 V battery 17/18 Ah batteries Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 6 Figure 4 – Terminal labels LOAD FUSE BATT FUSE 5 Amp 5 Amp + - | + - | GEN EPS |Temp Load| Batt | Fault Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 7: Maintenance

    There is no regular maintenance required of the PSE 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. Technical Support: +44(0)23 9269 6638 (option 3) PAK200581_02E June 2020 ©2020 ELMDENE INTERNATIONAL LTD...
  • Page 8 OMPLIANCE Elmdene International Ltd declares, where applicable, that this device is in compliance with the essential requirements and other related provisions of the new LV 2014/35/EU and EMC 2014/30/EU directive as well as the latest ROHS2 2011/65/EU, 0843 14 (UL) WEEE 2012/19/EU and Battery 2013/56/EU directives.

This manual is also suitable for:

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