Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Faults 03.10.2011
24 Faults
24.1 Purpose and activation
Function block "Faults" collects all fault status messages and reports them to the
fault display, fault relay, and via bus. A distinction is made between "universal fault
inputs" and "predefined fault inputs" (filter supervision, fire alarm off, smoke
extraction).
Basic type A Basic type P Basic types C and U
Q

p
QQ
xxx
x
xx
12
3
4
56
7
8
910
xx
x
x xdddd
Ack
d
Faults
Relay1 Relay2 Fan release
Fire SA EX
Q

p
QQ
xxx
x
xx
12
3
4
56
7
8
910
xx
x
x xd
Ack
d
Faults
Relay1
Relay2 Fan release
d
d
d
dd
12
QQ
1
Relay
Yes
Time switch 1
Fire
SA EX
The fault block is activated by configuring fault inputs 1...10 or assigning a fault
relay.
Many faults are acquired automatically and need not be specifically configured in
function block "Faults". These faults are described with the relevant function. The
fault block does not have to be activated to display these faults.
24.2 Fault categories
Fault messages are divided into three categories for engineering purposes:
Category Value Comments
None
Acknowledge
Acknowledgement
Acknowledge and reset
Detailed information in section 29.3.2
Urgent Fault messages representing plant risks or for which
trouble-free plant operation is no longer guaranteed
(e.g. frost, smoke extraction)
Priority
Not urgent These are fault messages that represent no direct
risk to plant operation (e.g. "Filter dirty", "Outside
temp sensor error")
Stop Plant stop: For messages about faults that represent
a risk to the plant (e. g. "Supply air overload")
Effect
No stop No plant stop: For messages about faults that do not
represent a risk to plant operation (e.g. "Outside
temp sensor error")
Purpose
Activation
Note