Videx DIGITAL GSM DOOR INTERCOM SYSTEM, Техническое руководство

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PAGE 15 of 36 VR GSM DOOR INTERCOM TECHNICAL MANUAL VER2.0.0
CABLE SIZE GUIDE
Connections for power supply output to intercom panel and lock release connections.
20m 50m 100m
Connections
0.5mm² 1.0mm² 1.5mm²
The power supply should be located as close to the intercom panel as possible for best performance.
Maximum acceptable resistance for above cables = 3
Ω
INSTALLATION
- Check that all components are free from damage before installing (Do not proceed with
installation in the event of damage).
- Keep all packaging away from children.
- Do not obstruct the ventilation openings or slots on any of the devices.
- All connections to mains voltages must be made to the current national standards (IEE
Wiring regulations)
- Install an appropriate fused spur or isolation switch to isolate the mains.
- Isolate the mains before carrying out any maintenance work on the system.
- Avoid water ingress into the rear of the module, always seal the module frame after
installation using a suitable silicon based sealant.
- All intercom and access control cables must be routed separately from the mains.
L ock release back EMF protection :
A capacitor must be fitted across the terminals on
an AC lock release and a diode must be fitted across the terminals on a DC lock release
as shown in the diagrams below to suppress back EMF voltages.
LOCK RELEASE
12V AC
~ ~
0.1uF capacitor
+
-
1N4002
+
-
12V DC
LOCK RELEASE
DIODE
PANEL CARE
The door panels facia is either mirror finish stainless steel or matt finish aluminium. It is
important that the facia is cleaned on regular occasions to prevent dirt build up and
tarnishing of the metal. A general household metal polish can be used but care should be
taken to follow the grain of the metal when polishing and also avoid any polish build up
around the call buttons which may prevent the buttons from operating correctly.