Web Hmi - ABB RELION 620 Series Technical Manual

1MRS757644 F
2.3
620 series
Technical Manual
The buttons and LEDs are freely programmable, and they can be configured both for
operation and acknowledgement purposes. That way, it is possible to get
acknowledgements of the executed actions associated with the buttons. This
combination can be useful, for example, for quickly selecting or changing a setting
group, selecting or operating equipment, indicating field contact status or indicating
or acknowledging individual alarms.
The LEDs can also be independently configured to bring general indications or
important alarms to the operator's attention.
To provide a description of the button function, it is possible to insert a paper sheet
behind the transparent film next to the button.

Web HMI

The WHMI allows secure access to the protection relay via a Web browser. When the
Secure Communication parameter in the protection relay is activated, the Web server
is forced to take a secured (HTTPS) connection to WHMI using TLS encryption.The
WHMI is verified with Internet Explorer 8.0, 9.0, 10.0 and 11.0.
WHMI is disabled by default.
Control operations are not allowed by WHMI.
WHMI offers several functions.
• Programmable LEDs and event lists
• System supervision
• Parameter settings
• Measurement display
• Disturbance records
• Fault records
• Load profile record
• Phasor diagram
• Single-line diagram
• Importing/Exporting parameters
• Report summary
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
Section 2
620 series overview
49