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559E1200.indd
version: 1.0
Micrologic 5 / 6 operating assistance functions
Type
Display
A E Micrologic
LCD
FDM121
display
Operating assistance
Personalised alarms
Settings
Up to 10 alarms assigned to all A and E measurements
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Display
Alarms and tripping
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Remote indications
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Time-stamped histories
Trips
(last 17)
Cause of tripping
(timestamping with ms)
Ir, Isd, Ii (Micrologic 5, 6)
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Ig (Micrologic 6)
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Alarms
(last 10)
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Operating events
(last 10)
Event types
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Opening of keypad lock
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Test via keypad
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Time setting (date and time)
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Time stamping
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Time-stamped event tables
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Time stamping
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Values monitored
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Time-stamping of each value
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Maintenance indicators
Counter
Mechanical cycles
(1)
Assignable to an alarm
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Electrical cycles
(1)
Assignable to an alarm
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(2)
Trips
One per type of trip
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Alarms
One for each type of alarm
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Hours
Total operating time (hours)
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Indicator
Contact wear
%
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Hours at different load levels
%
of hours in four current ranges: 0-49 % In, 50-79 %
In, 80 - 89 % In and
u
90 % In
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(1)
The BSCM module
(page A-27)
is required for these functions.
(2)
Available via the communication system only.
Additional technical characteristics
Contact wear
Each time Compact NSX opens, the Micrologic 5 / 6 trip unit measures the interrupted current
and increments the contact-wear indicator as a function of the interrupted current, according to
test results stored in memory. Breaking under normal load conditions results in a very slight
increment. The indicator value may be read on the FDM121 display. It provides an estimation of
contact wear calculated on the basis of the cumulative forces affecting the circuit breaker. When
the indicator reaches 80%, it is advised to replace the circuit breaker to ensure the availability of
the protected equipment.
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0 to 49 % In
b
50 to 79 % In
b
80 to 89 % In
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90 % In.
This information can be used to optimise use of the protected equipment or to plan ahead for
extensions.
3%
3%
3%
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