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Alarms, faults and system messages
9.2 Alarms
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
290
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
If the alarm history is filled up to index 63, each time a new alarm is accepted in the alarm
history, the oldest alarm is deleted.
Parameters of the alarm buffer and the alarm history
Table 9- 5
Important parameters for alarms
Parameter
Description
r2122
Alarm code
Displays the numbers of alarms that have occurred
r2123
Alarm time received in milliseconds
Displays the time in milliseconds when the alarm occurred
r2124
Alarm value
Displays additional information about the alarm
r2125
Alarm time removed in milliseconds
Displays the time in milliseconds when the alarm was removed
p2111
Alarm counter
Number of alarms that have occurred after the last reset
When setting p2111 = 0, all of the alarms that have been removed from the alarm
buffer [0...7] are transferred into the alarm history [8...63]
r2145
Alarm time received in days
Displays the time in days when the alarm occurred
r2132
Actual alarm code
Displays the code of the alarm that last occurred
r2134
Alarm value for float values
Displays additional information about the alarm that occurred for float values
r2146
Alarm time removed in days
Displays the time in days when the alarm was removed
Extended settings for alarms
Table 9- 6
Extended settings for alarms
Parameter
Description
You can change up to 20 different alarms into a fault or suppress alarms:
p2118
Setting the message number for the message type
Select the alarms for which the message type should be changed
p2119
Setting the message type
Setting the message type for the selected alarm
1: Fault
2: Alarm
3: No message
You will find details in function block diagram 8075 and in the parameter description of the
List Manual.
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