Web Hmi - ABB RELION 620 Series Technical Manual

1MAC504801-IB E
2.3
620 series ANSI
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.
The lowest two buttons with LEDs on top are typically used for hot-line tag for the
emergency operation of the circuit controlled by the protection relay.
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. The supported
Web browser versions are Internet Explorer 9.0, 10.0 and 11.0.
WHMI is enabled by default.
Control operations are not allowed by WHMI.
WHMI offers several functions.
• Programmable LEDs and event lists
• System supervision
• Parameter settings
• Measurement display
• DFR records
• Phasor diagram
• Single-line diagram
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
Section 2
620 series overview
45