Mercury Security
©
2013
SR10k Doc. 10107-0007
Rev 1.08
Page
16
DIODE 1N4001 (50V/1A) TYPICAL
Installation
Find a suitable location to anchor the reader mounting bracket. The mounting of the reader does not
require a junction box. However, rigid conduit is required for outdoor application. A single gang junc-
tion box may used to provide transition to rigid conduit. If a single gang junction box is used, a wall
plate (optional) may be used to cover the junction box. The reader is then secured to the mounting
bracket using a screw. Refer to fi gures for reader dimensions and typical junction box usage.
Connect door hardware/power according to the confi guration selected. Wires of 22AWG or larger
are recommended for fi eld wiring. See local electrical code.
DIODE SELECTION:
DIODE CURRENT RATING > 1X STRIKE CURRENT
DIODE BREAK DOWN VOLTAGE : 4X STRIKE VOLTAGE
Coat reader connector with the silicone grease supplied to seal off moisture for outdoor mounting.
To avoid having ESD (electrostatic discharge) interfering with the operation of the reader, the reader
casing shall be grounded. This can be accomplished be tying the mounting bracket to earth ground
locally (e.g. grounded conduit).
Reader DIP switch setting:
S1:
4 3 2 1
Factory Preset
OFF OFF OFF ON
S3:
ON ON ON ON
Factory Preset
Relay Contact Protection/Noise Suppression
Load switching can cause contact transfer, welding, and abnormal wear, which can cause premature
contact failure. The switching of an inductive load (strike) can also cause EMI (electromagnetic
interference). To prolong contact life and increase total system reliability, contact protection circuit
must be used. The following two circuits are recommended. For DC application, use a diode circuit;
for AC application, use a MOV
(metal oxide varistor)
circuit. Locate the protection circuit as close
to the load as possible, as the effectiveness of the circuit will decrease if it is located to far away.
As a guideline, the distance should be within 12 inches (30 cm). Mag Locks may have internal
noise suppression, please refer to the manufactures documentation. Mag Locks should be wired
to Output K1 normally closed (NC) terminal.
