Installation guide

Access Control by Example Installation with Wiegand and Access Easy Controller (AEC) | en 19
Bosch Security Systems Introductory Guide | 1.0 | 2009.10
4 Installation with Wiegand and Access Easy Controller
(AEC)
This chapter describes the installation of our example access control system using Wiegand
communication to the readers. AEC is an access control system that uses Wiegand
communication. We will assume that all the components decided upon in Section 2.2 Low tier:
Electrical components, page 6 have been ordered from and delivered by the hardware vendor
of your choice. The installation is basically a 6 stage process:
1. Mounting the access controller, see 4.1
2. Installing the wiring, see 4.2
3. Mounting the peripheral components, see 4.3
4. Connecting the peripheral components to the wiring and AEC, see 4.4 to 4.5.1
5. Configuring the AEC hardware and network, see 4.5.2
6. Configuring the AEC software, see 4.5.3
4.1 Mounting the access controller
The obvious room in which to locate the access controller and power supply is the office. In it
the hardware will be protected from unauthorized access. The office is also situated centrally
with regard to the doors. The enclosure should contain a battery to provide an uninterruptible
power supply (UPS).
The backup battery is optional and is not provided with the standard package.
4.2 Installing the wiring
Lay the cables decided upon in Section 2.2.3 Wiring for non-reader components, page 8 from
the office to the respective doors. Aesthetically it is always preferable to hide cabling beneath
floors, above ceilings or underneath wall plaster, but this is not always practical. Note -
junction boxes are commonly used near doors; we leave them out of this example only for the
sake of simplicity.
Make sure that cables carrying data (e.g. from the reader) are shielded, see 4.4.2
Make sure that there is enough length to reach both components above the door (e.g. REX
with motion detector, magnetic contacts) and components at handle height (e.g. reader, door
opener).
4.2.1 Wiegand star topology for readers
Readers in a wiegand environment are connected in a star topology, i.e. a reader is connected
directly to the controller. See Section 2.2.1 Card reader technologies, page 7.
With readers it is very important to follow the manufacturer’s instructions as regards
grounding (earthing) the device and its cable shielding.
4.3 Mounting the peripheral components
Electrical components must always be mounted (i.e. attached to walls, racks, doors and door-
frames) as per the manufacturer’s instructions.
The following illustration shows typical locations of electrical components with respect to a
door. Note that the access controller (5) should always be in a secured area to prevent
tampering.