User Guide
P12x/EN FT/A96
MiCOM P121/P122/P123
Page 9/72
3. PASSWORD
3.1
Password protection
A password is required for relay settings, especially when changing the various thresholds,
time delays, communication parameters, allocation of inputs and outputs relays.
The password consists of four capital characters. When leaving factory, the password is set
to AAAA. The user can define his own combination of four characters.
Should the password be lost or forgotten, the modification of the stored parameters is
blocked. It is then necessary to contact the manufacturer or his representative and a stand-
by password specific to the relay may be obtained.
The programming mode is indicated with the letter "P" on the right hand side of the display
on each menu heading. The letter
"P"
remains present as long as the password is active
(
5 minutes
if there is no action on the keypad).
3.1.1 Password
entry
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
.
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.
3.1.2
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
and enter the
new password character by character and validate the new password using
.
The message NEW PASSWORD OK is displayed to indicate that the new password has
been accepted.
3.1.3
Change of setting invalidation
The procedure to modify a setting is described in the following sections of this manual.
If there is a need to get back to the old setting push key
before validating the setting
change. The following message will then appear on the LCD for a few seconds and the old
setting will remain unchanged.
UPGRADE
CANCEL
Содержание MiCom P120
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