33 / 148
A-17
DB117041
DB101140
Histories and maintenance indicators ...................
The last ten trips and alarms are recorded in two separate history files that may be
displayed on the screen:
tripping history:
b
type of fault
v
date and time
v
values measured at the time of tripping (interrupted current, etc.)
v
alarm history:
b
type of alarm
v
date and time
v
values measured at the time of the alarm.
v
All the other events are recorded in a third history file which is only accessible
through the communication network.
Event log history (only accessible through the communication network):
b
modifications to settings and parameters
v
counter resets
v
system faults
v
fallback position
v
thermal self-protection
v
loss of time
v
overrun of wear indicators
v
test-kit connections
v
etc.
v
Note:
All the events are time stampled: time-stamping is activated as soon as time is set manually or by
a supervisor. No external power supply module is required (max. drift of 1 hour per year).
Maintenance indicators with COM option (BCM ULP)
A number of maintenance indicators may be called up on the screen to better plan for
device maintenance:
contact wear
b
operation counter:
b
cumulative total
v
total since last reset.
v
Additional maintenance indicators are also available through the COM network, and
can be used as an aid in troubleshooting:
highest current measured
b
number of test-kit connections
b
number of trips in operating mode and in test mode.
b
Additional technical characteristics
Safety
Measurement functions are independent of the protection functions.
The high-accuracy measurement module operates independently of the protection
module.
Simplicity and multi-language
Navigation from one display to another is intuitive. The six buttons on the keypad
provide access to the menus and easy selection of values. When the setting cover is
closed, the keypad may no longer be used to access the protection settings, but still
provides access to the displays for measurements, histories, indicators, etc.
Micrologic is also multi-language, including the following languages: English,
Spanish, Portuguese, Russian, Chinese, French, German...
Intelligent measurement
Measurement-calculation mode:
energies are calculated on the basis of the instantaneous power values, in two
b
manners:
the traditional mode where only positive (consumed) energies are considered
v
the signed mode where the positive (consumed) and negative (supplied) energies
v
are considered separately
measurement functions implement the new “zero blind time” concept which
b
consists in continuously measuring signals at a high sampling rate. The traditional
“blind window” used to process samples no longer exists. This method ensures
accurate energy calculations even for highly variable loads (welding machines,
robots, etc.).
Always powered
All current-based protection functions require no auxiliary source. Voltage-based
protection functions are connected to AC power via a voltage measurement input
built into the circuit breaker.
Stored information
The fine setting adjustments, the last 100 events and the maintenance register
remain in the control-unit memory even when power is lost.
Display of a tripping history.
Display after tripping.
DB120970A
RSU configuration screen for a Micrologic.