1.
Select
Main menu/Configuration/General/Factory setting
and press
.
2.
Set the value with
or
and press
.
3.
Confirm by selecting
Yes
with
or
and press
.
The protection relay restores the factory settings and restarts. Restoring takes 1...3
minutes. Confirmation of restoring the factory settings is shown on the display a few
seconds, after which the relay restarts.
Avoid the unnecessary restoring of factory settings, because all the
parameter settings that are written earlier to the relay will be overwritten
with the default values. During normal use, a sudden change of the
settings can cause a protection function to trip.
To restore factory settings from bootloader mode, press ESC + KEY
simultaneously for 5 seconds.
7.3.3
Setting passwords
If user authorization is off or the user is logged in as an administrator, user passwords can
be set via the LHMI or WHMI or with PCM600.
.
1.
Select
Main menu/Configuration/Authorization/Passwords
.
2.
Select the password to be reset with
or
.
3.
Press
, change the password with
or
and press
again.
4.
Repeat steps 2 and 3 to set the rest of the passwords.
7.3.4
Identifying relay application problems
•
Check that the function is on.
•
Check the blocking.
•
Check the mode.
•
Check the measurement value.
•
Check the connection to trip and DFR functions.
•
Check the channel settings.
Section 7
1MAC456939-IB D
Troubleshooting
108
620 series ANSI
Operation Manual