Innotech Device Network Cabling User Manual
Innotech Device Network Cabling
INSTALLATION INSTRUCTIONS
Proprietary
No part of this technical manual may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language or computer language, in any form or by any means, without
prior written permission of Mass Electronics Pty Ltd.
Trademark
The term ‘Innotech’ used in this manual is a trademark of Mass Electronics Pty Ltd trading as
Innotech Control Systems Australia.
Disclaimer
While great eorts have been made to assure the accuracy and clarity of this document, Mass
Electronics Pty Ltd assumes no liability resulting from any omissions in this document, or from
misuse of the information obtained herein. The information in this document has been carefully
checked and is believed to be entirely reliable with all of the necessary information included. Mass
Electronics Pty Ltd reserves the right to make changes to any products described herein to improve
reliability, function, or design, and reserves the right to revise this document and make changes
from time to time in content hereof with no obligation to notify any persons of revisions or changes.
Mass Electronics Pty Ltd does not assume any liability arising out of the application or any use of any
product or circuit described herein; neither does it convey licence under its patent rights or the rights
of others.
Edition 3.0 dated 05.12.2013
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© Mass Electronics Pty Ltd 2007
Document Management
Document Title:
Innotech® Device Network Cabling Installation
Instructions
Revision History
Version
Number
1.7 October 2007 Initial Document Release.
1.8 May 2008 Added REM EOL Information. Section 4 Revised.
1.9 July 2008 Technical Update.
2.0 October 2009
3.0 December 2013
Date Summary of Changes
Added UM01, IG01, IG02 & IG03. Updated information for maximum
cable lengths, maximum devices before repeater, updated
descriptions and graphics.
File Type Converted, Style Update, Contact Details Update, Added
Maxim 1010 & IWS01.
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Contents
Chapter 1 - Common Requirements ..............................................................11
1-1 Definition of RS485 or EIA-485 .................................................................................12
1-1.1 Termination ............................................................................................................. 12
1-1.2 Biasing ...................................................................................................................... 12
1-1.3 Communications speed ..........................................................................................12
1-2 Definition of Earth Types ......................................................................................... 13
1-3 Earth Points ..............................................................................................................13
Chapter 2 - Primary Networks ......................................................................15
2-1 Continuous Screen .................................................................................................. 18
2-2 Management of other devices on the Primary Network ........................................ 19
2-2.1 HMIs and Converters ...............................................................................................19
2-2.2 Control Stations (ICS) and DynaLite Gateway (IG02) ............................................. 20
2-2.3 Earth Connections ................................................................................................... 21
2-3 BACnet Gateway (IG03) ............................................................................................ 23
2-4 Older Controllers .....................................................................................................23
2-5 Isolated Devices ....................................................................................................... 23
2-6 Dual Channel Repeaters .......................................................................................... 24
2-6.1 Older Repeaters .......................................................................................................24
2-6.2 New Repeaters .........................................................................................................25
2-7 End of Line Termination (EOL) ................................................................................ 25
Chapter 3 - Sub Network Devices .................................................................. 27
3-1 REM Network ............................................................................................................ 28
3-1.1 So Earth .................................................................................................................30
3-1.2 End of Line Termination (EOL) ................................................................................ 30
3-2 Sub System Network ...............................................................................................32
3-2.1 VAVMax (VM01) and MicroMAX (UM01) .................................................................... 33
3-2.2 MiniMAX (MM02) ....................................................................................................... 33
3-3 IR11 Single Channel Repeater ................................................................................. 33
3-4 Network with VAVMax, MiniMAX and MicroMAX devices ........................................ 33
3-5 End of Line Termination (EOL) ................................................................................ 34
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Chapter 4 - General Specifications ................................................................37
4-1 Network Specifications ...........................................................................................38
4-2 Cable Specifications ................................................................................................ 38
4-2.1 Primary Network .....................................................................................................39
4-2.2 Sub Networks ...........................................................................................................39
Chapter 5 - Glossary ....................................................................................41
5-1 Glossary of Terms.....................................................................................................42
Chapter 6 - Factory Settings for RS485 EOL Termination ................................. 43
6-1 Factory Settings ....................................................................................................... 44
Customer Assistance ...................................................................................................... 46
Innotech Support ..............................................................................................................46
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© Mass Electronics Pty Ltd 2007
List of Illustrations
Figure 2-1:
Figure 2-2:
Figure 2-3:
Figure 2-4:
Figure 2-5:
Figure 2-6:
Figure 2-7:
Figure 2-8:
Figure 2-9:
Figure 2-10:
Figure 2-11:
Figure 2-12:
Figure 2-13:
Figure 3-1:
Figure 3-2:
Figure 3-3:
Figure 3-4:
Typical Screen Connections ...................................................................................18
Earth Connection ....................................................................................................18
Incorrect HMI or Converter Comms Connection ...................................................19
Correct HMI or Converter Comms Connection ......................................................19
Incorrect Station IG02 Comms Connection ...........................................................20
Correct Station IG02 Comms Connection .............................................................. 20
Correct Station ICS / IG02 Network Connection .................................................... 20
End of Run Mounted HMIs or Converters ............................................................... 21
Remote Mounted HMIs or Converters ....................................................................22
Options to eliminate earth potential dierences between networks .................. 22
Correct Wiring of Innotech BACnet Gateway Communications ............................23
Old Style Repeater ..................................................................................................24
New Style Repeater .................................................................................................25
REM Network ........................................................................................................... 30
Simple REM Network...............................................................................................30
REM Network with Repeater ...................................................................................31
REM Network with Controller in the Middle of the run .........................................31
Figure 3-5:
Figure 3-6:
Figure 3-7:
Figure 3-8:
Figure 3-9:
Figure 3-10:
REM Network with Repeater in the Middle of the run ...........................................32
Sub System Network Connections ......................................................................... 33
Simple Sub System Network ..................................................................................34
Sub System Network with a Repeater.................................................................... 34
Sub System Network with IG01 in the middle of a run..........................................35
Sub System Network with a Repeater in the middle of a run ...............................35
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List of Tables
Table 1-1:
Table 2-1:
Table 3-1:
Table 3-2:
Table 4-1:
Table 5-1:
Table 6-1:
Earth Types ..............................................................................................................15
Primary Network Digital Controllers and Devices ................................................. 18
REM Network Controllers and Devices ................................................................... 30
Sub System Network Controllers and Devices ......................................................34
Repeater Requirements ..........................................................................................40
Primary Network Digital Controllers and Devices ................................................. 44
Factory Settings for RS486 End of Line Termination ............................................. 46
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© Mass Electronics Pty Ltd 2007
Technical Manual Overview
The Installation Manual for Innotech Device Network Cabling is part of a series of technical manuals
designed to provide the customer with complete and comprehensive documentation supporting the
Innotech Digital Control system. It contains detailed information for the primary network and the two
sub networks.
• Network Connections
• Earth connection rules
• End Of Line Termination
• Descriptions on dierent comms hardware improvements
About this Manual
This instruction manual is intended to provide the user with complete and easy-to-follow instructions
for installation of Innotech Communication networks. In preparing these instructions, Innotech
assumed that the installer is familiar with the installation of RS485 Communication networks.
The following instructions and procedures are presented at a technical level that assumes familiarity
with networks and local electrical rules and regulations.
Because each network is designed to be configured to its own application requirements and since
each customer's application is dierent, no two sites will be the same. However, the following rules
and information will cover any possible scenarios.
Organisation of this Manual
This instruction manual has six sections:
Table 1: Document Organisation
Chapter
Number
Chapter 1
Chapter 2 Primary Networks
Chapter 3
Chapter 4
Chapter 5 Glossary of Terms
Chapter 6
Chapter Title Description
Common
Requirements
Sub Network
Devices
General Cable
Specifications
Factory Settings for
RS485 End of Line
Termination (EOL)
Provides a description of the common network requirements.
Provides a description of the primary network and how each
device can be connected to the network and a total overview of
the network requirements.
Provides a description of Sub Network Devices and how each
device can be connected to the network and a total overview of
the network requirements.
The two types of sub networks are the Remote Expansion
Modules, (REM’s) and the Sub System Network.
Provides a list of the general network rules that apply to all networks and the cable specifications.
The Glossary of Terms is intended to ensure that the contents of
this manual are clear and easily understood by the reader.
The glossary contains simple explanations of the technical terms
used in this manual; explanations are given in non-technical
language where possible.
Provides a table of the Factory Settings for RS485 End of Line
Termination (EOL).
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Innotech Device Network Cabling
INSTALLATION INSTRUCTIONS
Chapter 1 - Common
Requirements
Innotech Device Network Cabling Installation Instructions
1-1 Definition of RS485 or EIA-485
The term RS485 is outdated and was replaced with the latter specification called EIA-485 [TIA-485]
balanced (dierential) communication interface however the industry still uses RS485 and it is still
used in this manual.
‘Balanced’ means that two signal wires are required to produce an alternating signal pattern. i.e. if
the [+] terminal is measuring +5V then the [-] terminal is reading 0V, conversely if the [-] terminal is
measuring +5V then the [+] terminal is reading 0V.
For reliability, when interconnecting dierent equipment, 3 wires are required. Typically those are
named [+, -, 0V or S]. [+/-] and are used for data. [S] is the signal reference. Instead of having an
individual third wire for [S], the shield from the Shielded Twisted Pair (STP) cable is used.
The RS485 interface is operating in ‘half duplex’ mode. Meaning only one transmitter can be active
at the time but many receivers can listen simultaneously. A period of ‘silence’ is used to free the
interface for another transmitter to become active.
Two more terms are frequently mentioned in conjunction with RS485.
1-1.1 Termination
EOL: Will be referred to as ‘End of Line’ termination, in this manual.
A resistor (load) connected between terminals [+/-] of typically 120 Ohms.
There is one resistor connected at each end of a cable.
It is sometimes user selectable or fixed internally to the device.
1-1.2 Biasing
These are referred to as ‘Pull-up/Pull-down’ or ‘Idle-line failsafe’ resistors.
A weak current limited power supply individually connected to terminals [+ and -] to define the 485
interface to be Idle or silent when no transmitter is active, which is important to operate reliably in
‘half duplex’ mode.
The idle bias level can be checked with a voltmeter measuring between terminals [+ and -].
The reading is to be greater than +/-200mV.
NOTE
Ensure that there is no comms activity while measuring.
1-1.3 Communications speed
Faster is not always better. Speed is a trade o between cable length and cable quality, link
reliability, controller processing capability, cost and data quantities.
There is no doubt that increasing network speed makes networks more diicult to set up or fault find.
Therefore it is important to take care during installations on where, how and what cables are routed
between controllers.
The selected speeds of Innotech networks of controllers and wiring instructions in this manual are
set out to achieve the best reliability.
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© Mass Electronics Pty Ltd 2007
Innotech Device Network Cabling Installation Instructions
1-2 Definition of Earth Types
There are three types of earth referred to in this document:
• Bonded, hard or clean
• So
• Floating
These definitions are listed below in relation to the Innotech networks.
Table 1-1: Earth Types
Typ e Description
Bonded,
Hard or
Clean
So
A bonded, hard or clean earth is defined as a low impedance earth point with little
or no chance of conducted noise either already present or likely to be created when
bonded to a circuit. For Innotech’s reference we also explicitly mean there is no
potential dierence to true earth.
A so earth is where there is a path to earth via a circuit. This provides a tie to earth so
potential dierences are minimised. This path has higher impedance than a bonded
earth. This does force strong earth currents, i.e. leakage currents from large AC motors,
to remain on the proper heavy gauge earth wires, while leaving the so earth paths
unaected. So whilst having multiple earth connections we have not created any
eective earth loops.
So earth is oen used in 24 V supplied devices. The ‘tie to earth’ is in fact a ‘tie to 0 V’
because there is no dedicated earth terminal available. It is therefore expected that
the 0 V is earthed near the supply transformer.
Floating
Floating simply means that there is no path to an Earth point at all provided by the
device, not even a so earth path. A floating device has no earth.
1-3 Earth Points
It is imperative that the screen is earthed at one point only and this is defined as any point along a
network that is the best earth point along its length. Where ‘best’ earth point, is the point with least
amount of earth potential fluctuations. i.e. A controller in the basement of a high rise building is
closest to a good earth point than a controller in the plant room on top of the roof.
While there are internal jumpers on some devices to link the ‘S’ terminal internally to earth, there are
variants in hardware types and revisions, simply connect a bonded earth as shown externally. This
will suit all installations, regardless of age. If a repeater is installed each side of the repeater is to be
treated as a separate standalone network and each must have an earth connected.
NOTE
When there is more than one connection point to earth the screen becomes a conductor and no longer performs
correctly. Care should be taken to ensure only one bonded earth point is ever connected on a primary network.
Refer to Chapter 2-6 for details on use of a Repeater in a primary network.
Chapter 1 – Common Requirements
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Innotech Device Network Cabling Installation Instructions
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