Art. 8800 - Art. 8800-3 Digital Codelock Module - Videx VK8K/6256 Series Installation Handbook

VK8K/6256 Series "6 wire Bus" videokit
Art. 8800 - Art. 8800-3
INSTRUCTION TO RETURN SYSTEM TO PRESET ENGINEER'S FACTORY CODE
• Turn off power to code lock.
• Keep "ENTER" button pressed while turning back on the power to the code lock.
• Release "ENTER" button.
• The master code is now set at factory engineer's code "111111" (six times "1").
• Proceed with programming for a new system.
NOTES
• To switch off any relay while operating, type in the relevant code then press the "CLEAR" button.
• To operate relays together, set the same code for each relay.
• If a wrong code is entered, the system will lock out for 5 seconds which will increase each time a wrong code is entered. The sys-
tem will operate only when the correct code is entered.
GENERAL DIRECTIONS FOR INSTALLATION
In order to achieve the best results from the schematics described it is necessary to install only original VIDEX equipment, strictly
keeping to the items indicated on each schematic and follow these General Directions for Installation:
• The system must be installed according to national rules in force, in any case the running of cables of any intercom unit must be
carried out separately from the mains;
• All multipair cables should be compliant to CW1308 specification (0.5mm twisted pair telephone cable.
» Cables for speech line and service should have a max resistance of 10Ω
» Lock release wires should be doubled up (Lock release wires and power supply wires should have a max resistance of 3Ω);
• The cable sizes above can be used for distances up to 50m. On distances above 50m the cable sizes should be increased to keep
the overall resistance of the cable below the RESISTANCES indicated above;
• Double check the connections before power up;
• Power up the system then check all functions.
LOCK RELEASE BACK EMF PROTECTION
A varistor must be fi tted across the terminals on AC lock release (Fig.1A) and a diode must be fi tted across the terminals on a DC
lock release (Fig.1B) to suppress back EMF voltages. Connect the components to the lock releases as shown in fi gures.
Fig. 1A
VK8K/6256 Series - Installation handbook
Digital codelock module
VARISTOR (MOV)
12V AC
LOCK RELEASE
Fig. 1B
10
DIODE
1N4002
12V DC
LOCK RELEASE
66250865-EN - V 3.4 - 31/08/16