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Alpha central – A new generation within access control
The core within each access control system is the central. When developing our Alpha central, we have highly prioritized flexibility, the needs and requirements of the users and adaptability to future technology. The Alpha central is developed according to present and future requirements and needs in mind. Subsequently, there is a variety of integration options.
Installation flexibility is generally high. Depending on the conditions, it is possible to connect the Alpha centrals via a TCP/IP network and/or by using a traditional RS485 bus. The Alpha central can operate and control up to two or four online doors and comes in three different versions. There is the standard version and two upgraded versions with, USB connection, output relays and, respectively, with or without PoE function. All versions are suitable for a DIN rail installation.
Upgrading without changing the hardware
The system is based on the same type of components regardless of size and functionality which makes it possible to upgrade, expand and/or adjust the system without having to change the hardware. This implies that it is possible to upgrade e.g. the firmware and the software on the Alpha central if new requirements or needs should arise after installing the Alpha central.
Centrals with PoE function
The Alpha centrals with PoE function has a USB port, which makes it possible to connect a USB dongle. Through the connected USB dongle, it is possible to control the central through wireless LAN, and it allows the central to do an automatic backup to a USB-key. There is also the possibility to use two additional input- and output relays, which can be used for integration of alarm as well as extended door control or other similar functions. The functionality of the central expands through script-modules according to customer requirements.
Technical Specifications
Basic for all models
| Specifications | 536MHz CPU with 256MB RAM 256MB Flash Up to 100.000 users 1.000.000 events in log |
| Battery-backup | 12 VDC, 2.3 Ah |
| Operating temperature | -20°C to +85°C |
| Inputs | 2x or 4x exit buttons (Potential free) 2x or 4x DM sensor (Potential free) 2x extra inputs (Potential free) Galvanic isolation available on all inputs/ channels with optocoupler |
| PoE (only when +PoE centrals) | Provides power up to 25 W1, according to the standard for PoE+ IEEE 802.3at2 |
| Dimensions | The central is 213mm wide, 91mm high and 62mm deep – matches a 35mm DIN rail. |
| Installation | Installation of the equipment must be done by an authorized electrician on access restricted area |
| Standards & certifications | CE approved |
| Material | The central is made of self-extinguishing PC ABS, the assembly casing is made of Acrylonitrile Butadiene Styrene (ABS) |
| Warranty | 2 years |
Add-on for Alpha 2+ and 4+
| Communication | 1 x USB host port |
| Output | 2 x auxiliary output relays (Max 30 VDC, 2A) |
| Alarm output | Use auxiliary output |
Add-on for Alpha 2+ PoE and 4+ PoE
| PoE+ | Powers up to 25 W, according to standard for PoE+ IEEE 802.3at. |
| Communication | 1 x USB host port |
| Output | 2 x auxiliary output relays (Max 30 VDC, 2A) |
| Alarm output | Use auxiliary output |
| Maximal overall power consumption; all readers and all transistor outputs | 1.8A at 13.9 VDC (25W) on PoE+ |