Innotech Genesis II Digital Controller (v5) - Manual (Page 33)

Page 33
Genesis II Installation Instructions
© Mass Electronics Pty Ltd 2010 Chapter 3 – Electrical Installation
Cabling plays an important role in the installation of Genesis II Systems. The following general
cabling guidelines should be observed:
• In all cases, use electromagnetic-shielded cable for sensor wiring.
• When necessary to protect cabling from physical damage, both shielding and physical protection
may be provided by running the cable in a metal conduit. Alternatively, use steel wire armoured
(SWA) cable, which also contains an electromagnetic shield.
• Avoid running cables in the vicinity of high voltage power cables or cables carrying switching
voltages/currents. This especially applies to sensor signal cables.
• Interconnecting cables must have multi-strand conductors with a cross-sectional area of 1mm² for
each conductor.
• The earth cable to a Genesis II System enclosures must be a minimum of 2.5mm², and wired in
accordance with local electrical regulations.
• For Analogue Inputs to the controller, a 16 conductor (0.5mm²) shielded cable is required.
Table 3-1 provides assistance in determining the cabling requirements for various installation
configurations. It shows the dimensions, wire gauge designations and resistance values per
unit length for common wire sizes. Use this table to determine specific cabling requirements
for your installation.
3-3 Digital Controller Wiring
The following paragraphs contain input/output connection information for the Genesis II Direct
Digital Controller and the MPCII Mid Points Controller. The GEN2Config Software, which is used to
configure and program the digital controller, automatically produces a wiring diagram and materials
list for the specific application. The wiring diagram and materials list can be easily printed and used
for reference.
Conductor Area (mm²) Diameter (mm)
Nearest SWG or
BWG
Nearest
AWG
Ohms per 100
metres
0.5 0.80 21 20 3.44
1.0 1.13 18 17 1.72
1.5 1.38 17 15 1.15
2.0 1.60 16 14 0.86
2.5 1.78 15 13 0.69
Table 3-1: Nominal Resistance for Wire Sizes at 20°C
• 1. SWG = Standard Wire Gauge, BWG = British Wire Gauge, AWG = American Wire Gauge.
• 2. All SWG, BWG and AWG numbers are for the largest wire if a direct equivalent to the mm² wire size is not
available.
NOTE