SD700 – TOUCH-GRAPHIC DISPLAY
POWER ELECTRONICS
30
APPLICATION MANAGEMENT
Note: After introducing the password and tapping on ‘OK’ button, if the password number does
not match with the registered one, the dialogue window of password configuration will be closed
but the parameters will remain locked.
To know what password should be introduced, the user should resolve the following equation:
Password = (‘XXXX’ / 2) – 3
where ‘XXXX’ is the value of parameter ‘G1.2 Î Password’ (unlock key) in group ‘G1 Options’.
This value is updated every time the user introduces an incorrect password to unlock parameters.
Now, when the user tap on the value cell of parameter ‘G1.1 Î Lock parameters’, the dialogue
window will show the minimum and maximum allowed values and below them the ‘Unlock key’
which is the value shown in parameter ‘G1.2 Î Password’. After introducing the correct password
(result of the previous equation), the dialogue window will be closed and the parameter ‘G1.1 Î
Lock parameters’ is updated. At this moment, the parameters lock is deactivated. In this way, all
of the configuration parameters are unlocked and the user can modify them.
The next figure shows the step sequence to unlock parameters in case of introducing an incorrect
password (unregistered password). In this example, the ‘unlock key’ (value of parameter ‘G1.2 Î
Password’) is ‘252’. If this value is replacing in the previous equation, the correct password that
user should introduce to unlock parameters will be ‘123’ [(252/2) – 3].
Figure 2.17 Parameters unlock with incorrect password
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