Backing up data and series commissioning
9.5 Write and know-how protection
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
273
Creating an exception list for the know-how protection
Using the exception list, you as a machine manufacturer may make individual adjustable
parameters accessible to end customers although know-how protection is active. You may
define the exception list via parameters p7763 and p7764 in the expert list. Specify the
number of parameters for the selection list in p7763. Assign the individual indexes to the
parameter numbers of the selection list in p7764.
Proceed as follows to change the number of parameters for the selection list:
1. Save the inverter settings via an upload (
) on the PC/PG and go offline ( )
2. In the project on the PC, set p7763 to the desired value.
3. Save the project.
4. Go online and load the project into the inverter (
).
5. Now make the additional settings in p7764.
You have modified the number of parameters for the selection list.
Factory setting for the exception list:
● p7763 = 1 (selection list contains precisely one parameter)
● p7764[0] = 7766 (parameter number for entering the password)
Note
Block access to the inverter as a result of incomplete exception lists
If you remove p7766 from the exception list, you can no longer enter a password and
therefore no longer de
-activate know-how protection.
In this case to access the inverter again, you have to reset
the inverter to the factory
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