Manual 37138C
ESDR 4T - Current Differential Protection Relay
© Woodward
Page 25/46
Configuration Access
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NOTE
If no protection against modification of the setting values is required, we recommend to disable the
sealing function. If a sealing function is necessary, we recommend to enable it after the setup is com-
plete!
Î
Refer to the SEQUENCE DIAGRAM on Figure 6-1 at page 26!
By entering a five-digit code number, the configuration can be protected from unauthorized access and modifica-
tions. The function represents the exact software emulation of a mechanical seal. Unauthorized access will break
the seal.
Coding (seal)
ON
Sealing function
ON/OFF
ON
................ The configuration of the following parameters is protected by a code.
The subsequent screens of this option will be displayed.
OFF
.............. The sealing function is disabled and the subsequent screens of this
function are not displayed (default).
Code no. 000
Code? ?????
Code for seal No. XXX
00000 bis 60000
Enter the code for the seal here. The unit will behave as follows depending on the
correctness of the code:
Correct code
If the code for the active seal has been entered correctly, the follow-
ing screens are skipped and the user may proceed to configure the pa-
rameters. The default code is "00100".
Wrong code
. If the code for the active seal has been entered incorrectly, the fol-
lowing screens will be displayed.
Incorrect entry!
[Next: SELECT]
Incorrect code has been entered
"Select" button
The code for the active seal has been entered incorrectly! Confirm this message us-
ing the "Select" button.
Code no. 000
Break? YES
Breaking the seal number XXX
YES/NO
YES
.............. The seal will be broken and the user may proceed to configure the
parameters. The seal number will be increased by 1. This enables to
verify that unauthorized access has occurred.
NO
................ You return to the code entry screen. You may only exit the sealing
function by terminating the configuration mode (simultaneous press-
ing of "Digit
↑
" and "Cursor
→
").
Code no. 000
New code: ?????
Code for seal 001 (new entry)
00000 to 60000
After the old seal has been broken, the unit requests the code for the new seal. Seal-
ing can now be effected with a new code.
Enter value
[Next: SELECT]
Enter values
"Select" button
Press the "Select" button to proceed with the configuration.
