8.3 Authorizations
8.3.1 User authorization
The user categories have been predefined for the LHMI with different rights and
default passwords.
Passwords are settable for the user accounts in all roles. Only the following
characters are accepted.
• Numbers 0-9
• Letters a-z, A-Z
• Space
• Special characters !"#%&()*+'-./:;<=>?@[]^_`{|}~
There are default password policies in the protection relay.
• Minimum password length: 4
• Maximum password length: 8
• Minimum uppercase characters: 0
• Minimum numeric: 0
• Minimum special characters: 0
Table 20: Predefined users, their passwords and roles
Username
Password Predefined role
VIEWER 0001 VIEWER
OPERATOR 0002 OPERATOR
ENGINEER 0003 ENGINEER
ADMINISTRATOR 0004 ADMINISTRATOR
Each user can change their own password, but only Administrator can reset other
users’ passwords.
On Factory restore, factory default usenames, passwords and password policies are
restored.
User authorization is disabled by default and can be enabled via the
LHMI path Configuration/Authorization/Passwords.
User configuration change is not allowed when the protection relay
is in offline mode in PCM600.
Section 8 2NGA000823 A
Commissioning
70 REX610
Operation Manual
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