Operating instructions

Messages and fault codes
7.2 Alarm and error messages
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
225
7.2 Alarm and error messages
Diagnostics via alarm and fault numbers
If an alarm or fault condition occurs, the OP displays the corresponding alarm or fault
number.
● If an alarm is present, the inverter continues to operate.
● If a fault occurs, the inverter shuts down.
Table 7- 10 Alarm and fault numbers – cause and remedy
Alarm
number
Significan
ce
Cause The parameter or configuration settings made by the PROFIBUS master are
invalid.
A0700
Remedy Correct the PROFIBUS configuration.
Cause The connection to PROFIBUS is interrupted. A0702
Remedy Check the connector, cable, and PROFIBUS master.
Cause The PROFIBUS master is either not receiving any setpoints or is only
receiving invalid setpoints (control word = 0).
A0703
Remedy Check the setpoints of the PROFIBUS master. Switch the SIMATIC CPU to
"RUN".
Cause At least one transmitter between two nodes is not yet active or has failed. A0704
Remedy Activate the transmitter between the two nodes.
Cause The inverter is not receiving any actual values. A0705
Remedy None (the inverter is faulty).
Cause PROFIBUS DP software error. A0706
Remedy No diagnostics parameter r2041.
Cause The inverter has detected an error with the PROFIBUS data connection. A0710
Remedy The Control Unit data interface may be interrupted.
Cause Invalid PROFIBUS parameter. A0711
Remedy Check addresses P0918 and P2041.
Cause No communication via PROFIBUS. Initiated by A0702, A0703, and A0704.
The telegram downtime set in P2040 has elapsed. For details, see "Faults and
Alarms" in the List Manual.
F0070
Remedy Check the connection between the data transfer devices and make sure that a
valid control word is used.
Reading fault codes
The following parameters must be taken into account during troubleshooting:
● Stored in parameter r0947 under its code number, e.g. F0003 = 3
● Associated fault value; stored in parameter r0949 (0 = no fault value)
● The time stamp of the fault is stored in r0948 and can be read
● The number of fault codes (P0952) is stored in r0947 and can be read