Physical Ports - ABB RELION REX640 Technical Manual

Protection and control

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identifying which relay requires operator's attention when the bay overview is not

visible on the navigation page.

When the HMI view is opened for a relay, the SHMI works exactly like a normal HMI.

All the same features are available, and the Home button switches between the

configured home pages and indicates the alarm status for the respective relay.

Navigation area on the top left corner of the HMI view is used to navigate back to

the SHMI's navigation page. The navigation area shows the bay name on the button

to identify which relay's HMI is open.

Physical ports

The relay communication module has a dedicated port where the LHMI is connected

using an RJ-45 connector and a CAT 6 S/FTP galvanic cable. The HMI can be

connected to the relay also via station communication network if a longer distance

is required between the relay and the HMI. For more information, see the installation

Additionally, the HMI contains one Ethernet service port with an RJ-45 connector

and one USB port. The service port can be used for the PCM600 connection or

for WHMI connection. Data transfer to a USB stick is enabled via the USB port.

By default the USB port is disabled and has to be taken into use with a specific

Figure 8: Local HMI connectors

Technical Manual

REX640 overview