VX2200 System Cable Guide & Block Diagrams

Introduction to VX2200 System Cabling

This guide assists in selecting the optimal cable for the Videx VX2200 door entry system. Proper cable choice is crucial for system design, given the variety of cable types and terminologies. This document provides cross-references for different cable sizes and illustrates system configurations with block diagrams.

Cable Size Cross-Reference

The following tables provide a cross-reference for common cable sizes used by manufacturers and suppliers, showing AWG (American Wire Gauge) and SWG (Standard Wire Gauge) equivalents in mm diameter and mm².

Popular Cable Types

For short distances (up to 40 meters), CW1308 or equivalent solid core twisted pair telephone cable (0.19mm² / 0.5mm) is recommended. CW1308 is for internal use. For external runs, CW1128 (same core size) is available in duct grade and direct burial grade.

For longer distances, alternatives like Belden cables are suitable, available in sizes such as 18 AWG (0.8mm²), 20 AWG (0.5mm²), 22 AWG (0.3mm²), and 24 AWG (0.2mm²). For large installations, a large bus and riser cable can be used, reverting to CW1308 for connections from riser to apartment.

The cable sizes and core quantities specified are minimum requirements. Using larger cables is acceptable, but smaller sizes should be avoided to prevent unpredictable system operation. The VX2200 system uses a balanced pair video signal, so paired cables are essential for video connections throughout the installation.

For larger distances, consult the table below. Maximum acceptable resistance for BUS is 7.5Ω.

Doubling up a core is permitted to use a smaller core over a larger distance, but avoid using more than 3 cores per connection on the L&L- BUS as this can increase cable capacitance.

Minimum Cable Sizes by Connection Type and Distance

Notes on Minimum Cable Sizes:

• Lines marked with * are only required on video systems.
• Lines marked with ** are only required on telephones with door monitoring LED (Art. 3176, 3376, 3476).
• V1 & V2 must be a twisted pair.
• Maximum acceptable resistance for all terminals except +20 & Vid GND = 7.5Ω.
• Maximum acceptable resistance for +20 & Vid GND = 50Ω.
• Maximum of 400m for video systems.
• Power supply should be as close to the door panel as possible, with a maximum resistance of 50Ω.

System Connections

Telephone Connections

This section outlines core requirements for various telephone and videophone models:

• Art. 3171 / Art. 3172: Requires 2 cores. An additional 2 cores are needed if a spare service dry contact button is used, or if the local door panel facility (doorbell push button) is used.
• Art. 3176: Requires 3 cores. An additional 2 cores are needed if the local door panel facility is used.
• Art. 3371 / Art. 3471 Videophones: Requires 6 cores. Two of these must be a twisted pair for the video signal (V1 & V2). Additional cores are needed if the three spare service buttons (S, S1, S2) are used.
• Art. 3376 / Art. 3476 Videophones: Requires 7 cores. Two of these must be a twisted pair for the video signal (V1 & V2). An additional 2 cores are needed if the local door panel facility is used. Additional cores are needed if the two spare service buttons (S, S1) are used.

Riser Connections

Riser connections link junction boxes to the CPU. For Art. 3176 audio phones, the riser cable requires a minimum of 3 cores. For Art. 3376 videophones, a minimum of 7 cores is needed. Always ensure cores are the correct size as indicated in the cable size chart.

Door Panel Connections

Not all cables are required for every installation. Bus connections and power supply connections are always required. Busy signal connections are only needed for multiple door systems. Other connections are self-explanatory.

• Lock Release Connections: 2 cores. If door monitoring is used, 2 additional cores are required.
• Push to Exit Button: 2 cores.
• Fireman Switch Connections: 2 cores.
• Bus Connections: 2 cores (always required).
• Power Supply Connections: 2 cores (always required).
• Trade Connections: 2 cores (only if a trade button is used).
• Video Connections: 5 cores (only for video systems, non-coax video). Two of these must be a twisted pair (V1 & V2).
• Vprox Proximity Reader Connections: 5 cores (only if proximity access control is included).
• Xprox Proximity Reader (Screened): 8 cores (only if proximity access control is included).
• Busy Signal Connection: 1 core (only for multiple door and two-level systems).
• External Lock Trigger Signal Input: 2 cores (if an external source triggers the lock output, e.g., with proximity access control).
• Door Monitoring Contacts: 2 cores.

Note: The panel shown is an example; actual panel styles may vary but cable requirements remain consistent. Lock release connections may differ if used with a proximity access control system (i.e., direct connection to the proximity system).

Control Cabinet Connections

The control cabinet should be no more than 30m from the door panel. System requirements may dictate a single control cabinet or multiple cabinets, potentially remote from each other if distances between door panels exceed 30m.

• Single Entrance Audio System: A single SP400 control cabinet can be used.
• 2-4 Entrance Audio System: A single SP405 control cabinet can be used if entrances are within 30m of the cabinet; otherwise, multiple SP400 control cabinets are needed.
• Audio Systems with More Than Four Entrances: Use multiple SP400 or SP405 cabinets as required.
• Single Entrance Video System: A single SP410 control cabinet can be used.
• 2-4 Entrance Video System with Door Panels Less Than 30 Meters Apart: A single SP415 four-entrance video control cabinet can be used.
• 2 or More Entrance Video System with Door Panels More Than 30 Meters Apart: A single SP410 video control cabinet can be used for each entrance. Two Art.506 relays are required per cabinet to switch video power and signal.
• Two-Level System (Audio or Video): For communal and block entrances, a minimum of one control cabinet per block and additional cabinets for communal entrances are suggested, following the rules above.

Links Between Control Cabinets: Connections between control cabinets require 4 cores for essential functions and an additional 4 cores for video signals. These are minimum requirements; additional cables may be needed for proximity access control, door monitoring, etc.

VX2200 System Block Diagrams Overview

This guide includes various block diagrams illustrating typical VX2200 system configurations and their corresponding minimum cable requirements. These diagrams cover:

• Audio entrance systems for multiple apartments using Art.3171, Art.3172, or Art.3176 telephones.
• Multi-entrance audio systems with control cabinets in one or different locations.
• Audio systems incorporating concierge units (Art.VX2210) and/or proximity access control.
• Video entrance systems for multiple apartments using Art.3371, Art.3471, Art.3376, or Art.3476 videophones.
• Multi-entrance video systems with control cabinets in one or different locations.
• Video systems incorporating video concierge units (Art.VX2210V) and/or proximity access control.
• Two-level systems with main audio/video entrances and multiple block audio/video entrances.

Each diagram specifies the minimum cable requirements (number of pairs, AWG, mm², and resistance/km) for various distances (100m, 200m, 350m) for different system components. Users should consult these diagrams and the general cable guide for detailed information relevant to their specific installation.