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Elmdene International Ltd
3 Keel Close, Interchange Park
Portsmouth, Hampshire, PO3 5QD, UK
Models: ACCESS-PSU2-8A
MULTI-ACCESS-PSU2, PSU4 and PSU6
13.8Vdc 8A/27.6Vdc 4A Selectable Voltage PSU
With UNIVERSAL back plate for mounting Access Control Devices
The ACCESS-PSU2-8A and MULTI-ACCESS-PSUx are an advanced, high efficiency power
supply range, designed for use within Access Control applications. Featuring a selectable,
regulated output of 13.8Vdc or 27.6Vdc, supplying continuous full rated current to load
plus an additional 0.5A for charging one or two 12V standby batteries. Mains fail
monitoring is offered as standard in conjunction with an onboard ancillary relay that can
be used as a Fire relay if required. The 'Universal' mesh backplate and hinged plates,
provide the installer simple & flexible mounting options for a range of devices/PCB's
1. F
EATURES
•
Continuous full rated current to load
•
Universal mains input voltage 90-264Vac
•
Selectable output voltage (12Vdc or 24Vdc) – with onboard selector switch (Default:
12Vdc)
•
Lockable steel enclosure
•
17Ah Standby battery recharged to 80% within 24 hours
•
MULTI-ACCESS: Two hinged mounting panels to accommodate multiple devices
•
Volt free contact, signalling mains failure (EPS)
•
Independent ancillary relay available for power/lock release
•
MULTI-ACCESS: 8 x fused outputs with health LED's
•
High efficiency electronics for reduced running costs and lower operating
temperatures
•
Installer safe design with all high voltage electronics fully shrouded
•
Modular construction for ease of maintenance and installation
•
Green mains presents / yellow fault LEDs
•
Reverse battery connection protection
•
Lid and removal from wall tamper detection
•
LED status indication (Mains & Fault)
•
Full electronic short circuit & overload protection
•
Individual battery and output fuse protection
•
Mains transient protection circuit
•
Accommodates either 2 x 12V 7Ah or 1 x 17Ah SLA battery
•
Limited Lifetime Warranty
Technical Support: +44(0)23 9269 6638
Tel:+44 (0)23 9269 6638
Fax: +44 (0)23 9266 0483
Web:
www.elmdene.co.uk
PAK200989_01A
©2025 ELMDENE INTERNATIONAL LTD
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Table of Contents
Related Manuals for Elmdene ACCESS-PSU2-8A
Summary of Contents for Elmdene ACCESS-PSU2-8A
- Page 1 13.8Vdc 8A/27.6Vdc 4A Selectable Voltage PSU With UNIVERSAL back plate for mounting Access Control Devices The ACCESS-PSU2-8A and MULTI-ACCESS-PSUx are an advanced, high efficiency power supply range, designed for use within Access Control applications. Featuring a selectable, regulated output of 13.8Vdc or 27.6Vdc, supplying continuous full rated current to load plus an additional 0.5A for charging one or two 12V standby batteries.
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Page 2: Safety Information
(Figures 2 and 3). • Route power and LV cables via different knockouts / cable entry holes. • Use bushes and cable glands rated to UL94 HB minimum. Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD... - Page 3 Attach correctly rated AC power cable (minimum 0.5mm [3A], 300/500V ac) and fasten using cable ties. • Apply AC power. Check for 13.8Vdc/27.6Vdc on load output and AC power LED is on. • Disconnect AC power. Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
- Page 4 Remove Output fuse (F3) and check Yellow Fault LED is ON. • Replace Output fuse and remove PSU protection fuse (F2). Check Yellow Fault LED is • Replace PSU protection fuse (F2). Check Yellow Fault LED is OFF. Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
- Page 5 Use fine adjustment screw if necessary to align indicator with set point. • Close the lid/cover and fasten. Re-check tamper circuit is closed at the control panel. Figure 5: Tamper setting Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
- Page 6 2) Loosely fix the screws in each of the aligned mounting positions. Figure 6b: Screw fixing 3) Once position is correct, tighten all screws (max torque 0.6Nm) (Figure 6b) Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
- Page 7 Open if lid is opened, or if unit is prised from the wall. 3.10. LED Indicators Mains LED (GREEN) Mains Present FAULT LED (YELLOW) Output fuse fail, or Protection fuse fail (requires load and battery to be connected), battery shorted, reversed. Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
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Page 8: Monitoring Overview
For monitoring, a single independent output signal is provided to indicate loss of AC power (MAINS FAIL). Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD... -
Page 9: Specification
Temperature - Operating -10°C to +40°C 90% RH non-Condensing Temperature - Storage -20°C to +80°C Mechanical ACCESS-PSU2-8A: 408 x 508 x 90 Dimensions (W x H x D) mm MULTI-ACCESS-PSUx: 479 x 515 x 146 ACCESS-PSU2-8A: 6.2 MULTI-ACCESS- PSU2: 8.1 Weight (Kg) without battery MULTI-ACCESS- PSU4: 8.9... -
Page 10: Maintenance
See Specification for battery type information. For more information see: www.recyclethis.info Warning: risk of explosion if incorrect battery type fitted. The packaging supplied with this product may be recycled. Please dispose of packaging accordingly. Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD... -
Page 11: Symbol Definitions
(Not all may apply) Explanation of symbols: Shock Risk – isolate before Fault Indication attempting access Mains Present Do not dispose of Protective Earth in unsorted waste Specifications subject to change without notice Technical Support: +44(0)23 9269 6638 PAK200989_01A ©2025 ELMDENE INTERNATIONAL LTD...
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