SIPROTEC 4 Devices
4-36 7SJ63 Manual
C53000-G1140-C120-1
4.16 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 control.
The following access levels are defined at the factory:
q
Switching/tagging/manual overwrite,
q
Non-interlocked switching,
q
Test and diagnostics,
q
Individual settings,
q
Hardware test menus,
q
Setting Groups.
ka458.gif
Figure 4-29 DIGSI
®
4, Window Indicating the Active Passwords, example
When using DIGSI
®
4 or the HMI on the SIPROTEC
®
4 device, a password is request-
ed for the specific function.
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
®
4 off-line mode.
To deactivate a password, the password must be known.
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