Table of Contents
Building Technologies
HVAC Products
8
Large plants............................................................................................77
8.1
Engineering and commissioning ..............................................................77
8.1.1
Network topologies...................................................................................78
8.1.2
IP router as a coupler to the IP network...................................................81
8.2
LTE filter table for couplers and IP routers...............................................84
8.2.1
Filter settings............................................................................................84
8.2.2
Predefined LTE filter table........................................................................85
8.2.3
Filtering, zone addresses, communication areas ....................................86
8.2.4
LTE telegrams via couplers and IP routers ..............................................87
8.2.5
System time, alarms and remote time adjustments.................................89
8.3
Engineering of large plants ......................................................................90
9
Appendix.................................................................................................93
9.1
Faults and errors ......................................................................................93
9.1.1
Bus fault status message .........................................................................93
9.1.2
Communication errors..............................................................................94
9.2
Heating / cooling changeover ..................................................................95
9.2.1
Changeover via digital input.....................................................................96
9.2.2
Changeover via analog input ...................................................................97
9.2.3
Changeover based on calendar...............................................................98
9.2.4
H/C changeover relay and fault messages..............................................99
9.3
Room control combination .....................................................................100
9.3.1
Application examples .............................................................................100
9.4
Applications with zones..........................................................................104
9.4.1
Additional zones in the RXB/RXL room controller .................................105
9.5
Supply chains.........................................................................................106
9.5.1
Data exchange in LTE mode..................................................................108
9.6
Updating the process values..................................................................109
9.7
Lightning and overvoltage protection, EMC........................................... 110
9.7.1
Lightning protection................................................................................ 110
9.7.2
Overvoltage protection ........................................................................... 113
9.7.3
Overvoltages in loops............................................................................. 114
9.7.4
EMC protection management ................................................................ 115
Basic documentation: Communication via the KNX bus
Contents
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CE1P3127en
30.08.2007
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