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Functions
7.8 Status messages
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
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Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
7.8
Status messages
Information about the inverter state (alarms, faults, actual values) can be output via inputs
and outputs and also via the communication interface.
Details on evaluating the inverter state via inputs and outputs are provided in Section
Adapting the terminal strip (Page 85).
The evaluation of the inverter state via the communication interface is realized using the
inverter status word. Details on this are provided in the individual sections of Chapter
Configuring the fieldbus (Page 97).
7.8.1
System runtime
By evaluating the system runtime of the inverter, you can decide when you should replace
components subject to wear in time before they fail - such as fans, motors and gear units.
Principle of operation
The system runtime is started as soon as the Control Unit power supply is switched-on. The
system runtime stops when the Control Unit is switched off.
The system runtime comprises r2114[0] (milliseconds) and r2114[1] (days):
System runtime = r2114[1] × days + r2114[0] × milliseconds
If r2114[0] has reached a value of 86,400,000 ms (24 hours), r2114[0] is set to the value 0
and the value of r2114[1] is increased by 1.
Parameter
Description
r2114[0]
System runtime (ms)
r2114[1]
System runtime (days)
You cannot reset the system runtime.
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