Local Hmi - ABB RELION REX640 Operation Manual

REX640 overview
Figure 2: Hardware module slot overview of the REX640 relay
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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.
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Slot markings in enclosure (top and bottom)
Ready LED
The LHMI is an accessory for the relay which is fully operational even
without the LHMI.
1MRS759118 D
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REX640
Operation Manual