SIPROTEC
®
4Devices
4-33
7SA6 Manual
C53000-G1176-C156-2
4.15 Passwords
Passwords are assigned to a SIPROTEC
®
4 device to protect against unintended
changes to the device or unauthorized operations from the device, such as switching.
The following access levels are defined:
G Switching/tagging/manual overwrite,
G Non-interlocked switching,
G Test and diagnostics,
G Hardware test menus,
G Individual settings,
G Setting Groups.
Figure 4-30 DIGSI
®
4, window indicating the active passwords — example
When using DIGSI
®
4 or the operator control panel on the SIPROTEC
®
4 device, a
password is requested for the specific functions.
Note:
Password protection against unauthorized access is only in place during on-line op-
eration. The passwords for setting changes are first activated when the settings are
loaded into the device. The passwords are irrelevant in the DIGSI
®
4off-linemode.
To deactivate a password, you must know the password.
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