Sharp IQ-8000 Manuel d'installation télécharger pdf (Page 61)

6.10 Installing Noise Suppression Devices

Install an MOV or diode (or both) at the lock to suppress noise and avoid problems related to

spikes. Follow the instructions below and refer to the diagrams in section 6.1.

6.10.1 Procedure

The most effective location for a suppression device is at the source; in this case, at the door

strike.

1. Remove the strike-locking device and find the wire connector that attaches the lock wires to

the lock.

2. Install an MOV (Siemens S10K30 or equivalent) in parallel with the load. The MOV is a non-

polarized device and will work with both AC and DC locks.

NOTE Use an additional MOV if you experience further noise at the strike.

NOTE For further protection on DC units, a reverse biased diode may be

installed (We suggest types 1N4004 to 1N4007 be used) also in

parallel with the load.

3. Note the wiring set-up of your particular system. Connections can be made either to the

“normally open” (fail secure) contact or to the “normally-closed” (fail-safe) configuration

whereby an isolation relay is used and a diode (or MOV) is added for noise suppression.

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Sharp IQ-8000 Manuel d'installation Page 61