Manual
KVCG202/EN M/H
3.4.5 Password protection
Password protection is provided for the configuration settings of the relay.
This includes CT and VT ratios, function links, input masks and relay masks.
Any accidental change to configuration could seriously affect the ability of the relay to
perform its intended functions, whereas, a setting error may only cause a grading
problem. Individual settings are protected from change when the relay cover is in place
by preventing direct access to the [+] and [–] keys.
The passwords are four characters that may contain any upper case letter from the
alphabet. The password is initially set in the factory to AAAA, but it can be changed by
the user to another combination if necessary. If the password is lost or forgotten access
to the relay will be denied. However, if the manufacturer, or their agent is supplied with
the serial number of the relay a back-up password can be supplied that is unique to that
particular product.
3.4.6 Entering passwords
Using the [F] key, select the password cell [0002] in the SYSTEM DATA column of the
menu. The word “Password” is displayed and four stars. Press the [+] key and the cursor
will appear under the left hand star. Now use the [+] key to step through the alphabet
until the required letter is displayed. The display will increment faster if the key is held
down and the [–] key can be used in a similar way to move backwards through the
alphabet. When the desired character has been set the [F] key can be given a
momentary press to move the cursor to the position for the next character. The process is
then be repeated to enter the remaining characters that make up the password. When
the fourth character is acknowledged by a momentary press of the [F] key the display will
read:
Are You Sure?
+ = YES – = NO
1. Press the [0] key if you decide not to enter the password.
2. Press the [–] key if you want to modify the your entry.
3. Press the [+] to enter the password. The display will then show four stars and if the
password was accepted the alarm LED will flash. If the alarm LED is not flashing the
password was not accepted, a further attempt can be made to enter it, or the [F] key
pressed to move to the next cell.
Note: When the password cell is displayed, do not press the [+] or [–] key
whilst the alarm LED is flashing unless you want to change the
password.
3.4.7 Changing passwords
When the password has been entered and the alarm LED is flashing either the [+] or [–]
key is pressed to put the relay in setting mode. A new password can now be entered as
described in Chapter 3.4.6. After entering the fourth character make a note of the new
password shown on the display before pressing the [F] key to obtain the confirmation
display.
Are You Sure?
+ = YES – = NO
1. Press the [0] key if you decide not to enter the new password.
2. Press the [–] key if you want to modify the your entry.
3. Press the [+] to enter the new password which will then replace the old one.
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