ABB Industrial IT enabled REX 521 Technical Reference Manual, General page 10

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Technical Reference Manual, General
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To ensure that a protection function block protects the feeder in the desired manner,
the default values of parameters must be checked and set before taking the function
block into use.
The parameters can be set either locally over the HMI or externally via the serial
communication using Relay Setting Tool. See "Serial communication" on page 26.
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The parameter to be changed is entered by navigating in the menu structure. For
detailed instructions, refer to
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The Relay Setting Tool and/or Graphical I/O Setting Tool is used for external
parametrization of the protection relay. The parameters can be set by using a PC and
downloaded to the protection relay over a communication port. The menu structure
of the setting tool, including views relating to parametrization and settings, is the
same as the menu structure of the protection relay
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1. A few parameters are visible only in the relay, see the list on page 63.
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(see "References" on page 51).
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. The use of the tool is instructed
(see "References" on page 51).
1MRS 751108-MUM