ABB RELION REX640 Operation Manual page 27

1MRS759118 A
REX640
Operation Manual
The LHMI is an accessory for the relay which is fully operational even
without the LHMI.
GUID-093E5A0B-C7B9-4BEC-8EA6-42EF75793B4F V1 EN
Figure 3: Example of a local HMI page
The LHMI presents pages in two categories.
• Operator pages are typically required as a part of an operator's normal activities,
such as a single-line diagram, controls, measurements, events or alarms
• Engineer pages are specifically designed pages supporting relay parametrization,
troubleshooting, testing and commissioning activities
The Operator pages can be scrolled either by pressing the Home button or by swiping
the actual pages. The Engineer pages are accessible by tapping the menu button in the
menu bar on the top of the LHMI display.
The Home button indicates the relay's status at a glance. In normal situations, the
Home button shows a steady green light. Any other situation that requires the
operator's attention is indicated with a flashing light, a red light or a combination of
these.
Section 3
REX640 overview
21