1
2
GUID-5D4C7B10-17CA-4F59-B9E0-8024CB82CDE8 V1 EN
Figure 2:
Hardware module slot overview of the REX640 relay
1 Slot markings in enclosure (top and bottom)
2 Ready LED
The relay has a nonvolatile memory which does not need any periodical maintenance.
The nonvolatile memory stores all events, recordings and logs to a memory which
retains data if the relay loses its auxiliary supply.
3.3
Local HMI
The LHMI is used for setting, monitoring and controlling the protection relay and the
related process. It comprises a 7-inch color screen with capacitive touch sensing and
a Home button at the bottom of the LHMI.
Section 3
1MRS759118 A
REX640 overview
20
REX640
Operation Manual