Apollo AIM-4SL, Hardware Manual

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26 System Wiring
© 2011 Apollo Security Inc.
3.7.4 ADA External High Security Relays
12 Vdc
Power Supply
+
-
Apollo Card Reader
Interface
OUT
RET/GND
+
-
Door
Strike
I
N
+
I
N
-
V
I
N
G
N
D
N
C
N
0
C D
I
O
(DC Powered)
Figure 3.7.3 ADA-11 Loop and Strike Wiring.
An example showing wiring with two ADA-11s with
a DC Powered Door Strike. The strike is wired Fail-Secure, thus power is supplied to the strike only when
the relay is activated. The ADA-10 is wired in a similar fashion but instead of wiring to terminals, wiring must
be connected to the special connector of the ADA-10.
3.7.4.1 Strike Wiring, External ADA-10/11, High Security Relay
Use of the internal relays provided on the AIM-4SL reader provides a possible security breach as described
above. To prevent the possibility of illegally releasing the door by smashing open the reader and bypassing
the internal relay, external, high security relays may be installed. The ADA-10 and ADA-11 relay module are
designed for this purpose. These relays are not included with the AIM-4SL and must be purchased
separately.
The purpose of the ADA-10/11 high security relay is to supervise (protect) the wiring between the reader and
the electric strike. IF THERE IS A POSSIBILITY OF AN INTRUDER ILLEGALLY GAINING ACCESS TO
THESE WIRES, THE ADA-10/11 SHOULD BE USED. If someone illegally gains access the wires between
the reader and the ADA-10/11, it is not possible to cause the door to release. The information passing along
these wires is encoded, digital data, not a simple short or open circuit that is easily compromised.
The wiring between the ADA-10/11 module and the electric strike itself is not protected. To maximize the
increased security of the ADA-10/11 module, the module should be mounted as close to the actual electric
strike as possible, minimizing the length of the unprotected wires.
The ADA-10 module is a potted module with an 8 position connector on the end of a short ribbon cable.
Optional connectors and mounting tools (ATL-10, 490-040) may be purchased from Apollo