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 junction 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 figures for reader dimensions and typical junction box usage.
Connect door hardware/power according to the configuration selected. Wires of 22AWG or larger are recommended for field wiring. See local electrical code.
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: 4 3 2 1 | Factory Preset. |
OFF OFF OFF ON |
|
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.
+ −
DIODE SELECTION:
DIODE CURRENT RATING > 1X STRIKE CURRENT DIODE BREAK DOWN VOLTAGE : 4X STRIKE VOLTAGE
DIODE 1N4001 (50V/1A) TYPICAL
AC | AC STRIKE |
MOV SELECTION:
VOLTAGE RATING > Vac RMS
FOR 24Vac STRIKE, PANASONIC
Mercury Security Corporation, © 2005 | Doc. | Page 16 |
