ABB Relion 670 series, Technical Reference Manual, Page: 81 / 1232

Section 4 Basic IED functions
About this chapter
This chapter presents functions that are basic to all 670 series IEDs. Typical functions
in this category are time synchronization, self supervision and test mode.
4.1 Authorization
To safeguard the interests of our customers, both the IED and the tools that are
accessing the IED are protected, by means of authorization handling. The authorization
handling of the IED and the PCM600 is implemented at both access points to the IED:
• local, through the local HMI
• remote, through the communication ports
4.1.1 Principle of operation
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 14 .
Be sure that the user logged on to the IED has the access required when
writing particular data to the IED from PCM600.
The meaning of the legends used in the table:
• R= Read
• W= Write
• - = No access rights
1MRK505222-UUS C
Section 4
Basic IED functions
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Technical reference manual