![background image](http://html1.mh-extra.com/html/eaton/nzm2/nzm2_manual_4696860071.webp)
DMI
66
11/04 MN01219002Z-EN
Alarm messages
Each time that a load threshold is exceeded (Overload 1/
Overload 2) or each time the circuit-breaker trips, the alarm
message appears automatically as an alarm screen in the
DMI display (
a
section “Operating principle”, Page 13).
The standard display or older alarm messages are
overwritten so that the display always shows the last alarm
message output and indicates an exceptional circumstance.
Every alarm message is displayed until it is either overwritten
by a new alarm or is acknowledged by the user by pressing
ESC. This enables alarm states detected in the past to be
indicated locally, even if they are currently no longer present.
Alarms which indicate opening of the current paths – all trip
and motor protection messages – must be acknowledged by
the user. Otherwise the status message remains active on
the fieldbus and a respectively configured output remains set
and the display indicates the respective alarm.
Four possibilities are available to the user to acknowledge
the alarm:
• using the
ESC
pushbutton,
• using the input I0,
(prerequisite: respective configuration,
a
section “I
Assignment”, Page 43),
• using the fieldbus through a command,
• by switching off the NZM.
All other alarms (overload1, overload2, unsymmetry) can be
erased from the display with
ESC
. Outputs and status
messages continue to remain active as long as the respective
state continues.
The exact cause of the alarm message and possibly the
sequence of faults can be viewed via the Diagnostics menu
(
a
section “Menu overview”, Page 63).
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com