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Operator’s Manual
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There are two kinds of messages that are displayed in the assisting window:
1. Indication messages that are further divided to
• information about the terminal functions and the condition of the terminal
(self-diagnosis) together with a LED indicator
• text messages without a LED indicator, generally related to e.g. condition
monitoring, alarms and warnings
2. Help messages
All messages are latching, i.e. they remain on the display until acknowledged or
overrun by another message of higher prority.
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The messages in the assisting window have a certain priority. If different type of
indications are activated simultaneously, the message with the highest priority
appears on the display. The priority of the messages is the following:
1. Internal fault
2. Trip, CBFP
3. Start, Block, Supervision (condition monitoring)
4. Help messages
As concerns the messages 1 and 2, the first active indication is shown in the assisting
window, whereas for the messages 3 and 4, the latest active indication is shown.
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Help messages (priority 4) assist the user by displaying hints on how to proceed, see
the example below.
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Uaux = 80...265 Vdc/ac
fn = 50 Hz
In = 1/5 A (I)
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98150
Un = 100/110 V (U)
Uon = 100/110 V (Uo)
Ion = 1/5 A (Io)
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Assisting window
Protection indication LEDs:
Left:
Ready, IRF, Test mode
Center: Start, Block
Right:
Trip, CBFP
U s e C - b u t t o n t o
c l e a r E v e n t s
assistvi
C c l e a r s a l a r m s
E V E N T M I M I C
Summary of Contents for REF 54 Series
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