Operation Principle - ABB Relion Technical Manual

1MRK 502 048-UUS A
17.12.4
17.12.4.1
Technical manual

Operation principle

There are different levels (or types) of users that can access or operate different areas of
the IED and tools functionality. The pre-defined user types are given in
Table 522: Pre-defined user types
User type
SystemOperator
ProtectionEngineer
DesignEngineer
UserAdministrator
The IED users can be created, deleted and edited only with the IED User Management
within PCM600. The user can only LogOn or LogOff on the local HMI on the IED, there
are no users, groups or functions that can be defined on local HMI.
Only characters A - Z, a - z and 0 - 9 should be used in user names and
passwords.
The maximum of characters in a password is 12.
At least one user must be included in the UserAdministrator group to be
able to write users, created in PCM600, to IED.
Authorization handling in the IED
At delivery the default user is the SuperUser. No Log on is required to operate the IED
until a user has been created with the IED User Management..
Once a user is created and written to the IED, that user can perform a Log on, using the
password assigned in the tool. Then the default user will be Guest.
If there is no user created, an attempt to log on will display a message box: "No user
defined!"
If one user leaves the IED without logging off, then after the timeout (set in Main menu/
Configuration/HMI/Screen/SCREEN:1) elapses, the IED returns to Guest state, when
only reading is possible. By factory default, the display timeout is set to 60 minutes.
Basic IED functions
Access rights
Control from local HMI, no bypass
All settings
Application configuration (including SMT, GDE and
CMT)
User and password administration for the IED
Section 17
Table 522.
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