7
1. Introduction
1.1. This manual
Before attempting any operation with REF542plus, read this manual carefully
first.
This manual describes how to use the interface of REF542plus (LD HMI,
Local Detached Human Machine Interface). Note that HMI views and
pictures are to be considered exemplary.
Do not make any changes to the REF542plus configuration
unless you are authorized to do it and familiar with REF542plus
and its Operating Tool. This might result in malfunction and loss
of warranty.
1.2. Use of symbols
This publication includes the following icons that point out safety-related
conditions or other important information:
The electrical warning icon indicates the presence of a hazard
which could result in electrical shock.
The warning icon indicates the presence of a hazard which could
result in personal injury.
The caution icon indicates important information or warning
related to the concept discussed in the text. It might indicate the
presence of a hazard which could result in corruption of software
or damage to equipment or property.
The information icon alerts the reader to relevant facts and
conditions.
It should be understood that operation of damaged equipment could, under
certain operational conditions, result in degraded process performance
leading to information or property loss. Therefore, comply fully with all
notices.
1MRS755869
Multifunction Protection and Switchgear Control
Unit
Operator's manual
REF542plus
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