5.1.3
Logging off
GUID-0FDDB51B-D1C2-4442-AAE5-865BC39AE253 v1
The user is automatically logged off after the display timeout. The IED returns to a state where
only reading is enabled. Manual logoff is also possible.
1.
Press
.
2.
To confirm logoff, select
Yes
and press
.
IEC12000159-3-en.vsd
IEC12000159 V3 EN-US
Figure 18: Logging off
•
To cancel logoff, press
.
5.1.4
Turning the display backlight on
AMU0600409 v9
The display backlight is normally off. It turns on at power up.
•
To turn on the backlight manually, press any LHMI push button.
The backlight turns on and the panel is ready for further operations.
If the panel has not been used for a predefined timeout period, the backlight is switched off.
The user is logged out from the current user level after the display backlight has turned off.
The factory default for display timeout is 10 minutes. The minimum is 1 minute.
The display returns to the default view and all unconfirmed operations, for example parameter
editing and breaker selection are cancelled.
Change the backlight timeout period in Main menu/Configuration/HMI/
Screen/SCREEN:1/DisplayTimeout.
5.1.5
Selecting local or remote use
AMU0600434 v5
The control position of the IED can be changed with the R/L button. In local position primary
equipment, such as circuit breakers or disconnectors, can be controlled via the LHMI. In
remote position, control operations are possible only from a higher level, such as from a
substation control system or a remote control center.
•
Press
.
•
When the L LED is lit, local control is enabled and remote control disabled.
•
When the R LED is lit, remote control is enabled and local control disabled.
•
When neither of the LEDs is lit, both control positions are disabled.
The control position cannot be simultaneously local and remote but it can
be disabled when neither of the positions is active.
Section 5
1MRK 500 127-UEN D
Using the HMI
34
670 series
Operation manual
