AEG DUA2.1, Technical Manual And User Manual

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User Guide
3.3
The input of the password is requested as soon as a modification of a parameter is made for any one of
the six/eight menus and the submenus. The user enters each one of the 4 characters and then validates
the entire password with enter keypad. After 5 seconds, the display returns to the point of the preceding
menu. If no key is pressed inside of 5 minutes, the password is deactivated. A new password request is
associated with any subsequent parameter modification
Changing the password
To change an active password, go to the OP PARAMETERS menu and then to the Password submenu.
Enter the current password and validate it. Then press enter keypad and enter the new password
character by character and validate the new password using enter keypad.
The message NEW PASSWORD OK is displayed to indicate that the new password has been accepted
.
4. DISPLAYS of ALARM
4.1
Alarm messages are displayed directly on the front panel LCD. They have priority over the default
display presenting measured current values. As soon as the relay detects an alarm condition (crossing
of a threshold for example), the associated message is displayed on the front panel LCD and the LED
Alarm (LED 2) lights up
.
Alarm messages generated by the electrical power network.
Electrical Network Alarms
Any crossing of a threshold (instantaneous or time delay) generates an "electrical network alarm". The
involved threshold is indicated. Regarding the phase thresholds, the phase designation is also
displayed.
If several alarms are triggered, they are all stored in their order of appearance and presented on the
LCD in reverse order of their detection (the most recent alarm first, the oldest alarm last). Each alarm
message is numbered and the total number of alarm messages is displayed.
The user can read all the alarm messages pressing.
The user acknowledges and clears the alarm messages from the LCD pressing.
The user can acknowledge each alarm message one by one or all by going to the end of the list to
acknowledge, and clear, all the alarm messages pressing.
The control of the ALARM LED (LED 2) is directly assigned to the status of the alarm
If all the messages have been ACKNOW LEDGED, and cleared, if the cause that generated the alarm
disappears, the ALARM LED (LED 2) is extinguished.
the different electrical system alarms are listed below:
Ie>
Ie>>
Ie>>>
tIe>
tIe>>
tIe>>>
1st stage earth fault threshold
2nd stage earth fault threshold
3rd stage earth fault threshold
1st stage earth fault time-out
2nd stage earth fault time-out
3rd stage earth fault time-out
F
3.2 Password entry
HF9024