NORD Drivesystems BU0550 - Manual (Page 93)

4 Frequency inverter details
BU 0550 GB-0813 93
4.3 PLC Error messages
Error messages cause the frequency inverter to switch off, in order to prevent a device fault. With PLC error
messages execution by the PLC is stopped and the PLC goes into the status "PLC Error". With other error
messages the PLC continues operation. The PLC restarts automatically after the error has been
acknowledged.
The PLC continues to operate with PLC User Fault 23.X!
Display in the
SimpleBox
Fault
Text in the ParameterBox
Cause
Remedy
Group Details in
P700[-01] /
P701
E022 22.0 No PLC program The PLC has been started but there is no PLC program in
the FI
- Load PLC program into the FI
22.1 PLC program is faulty The checksum check via the PLC program produced an
error.
- Restart the FI (Power ON) and attempt to reload
the PLC program
22.2 Incorrect jump address
Program error, behaviour as for Error 22.1
22.3 Stack overflow More than 6 bracket levels were opened during the run time
of the program
- Check the program for run time errors
22.4 Max. PLC cycles exceeded The stated maximum cycle time for the PLC program was
exceeded
- Change the cycle time or check the program
22.5 Unknown command code A command code in the program cannot be executed
because it is not known.
- Program error, behaviour as for Error 22.1
- The PLC version and the NORDCON version do not match
22.6 PLC write access
The program content has been changed while the PLC
program was running
22.9 PLC General error The cause of the fault cannot be precisely determined
- Behaviour as in Error 22.1
E023 23.0 … 23.7 PLC User Fault 1 … 8
This error can be triggered by the PLC program in order to
externally indicate problems in the execution of the PLC
program. Triggered by writing the process variable
"ErrorFlags".
E024 24.0 … 24.7 PLC User Fault 9 … 16
Table 111 PLC error messages