ABB RELION REX640 - Connecting and setting HMI; Connecting local HMI directly to relay

7.4.3 Connecting and setting HMI
• Connect the LHMI to the relay either directly from the main unit port X1.1 to
the relay’s X0/HMI port or through station network from the main unit port X1.1
to the relay’s Network 1 port. The HMI’s service port X1.2 is intended for local
service access to the relay using PCM600 or the WHMI.
• Always connect the SHMI through the station network.
• Depending on the planned network topology communication, adapt the HMI
settings to establish communication between the relay and the HMI. The service
port settings must be set correctly to allow access to the relay either directly or
through the station network.
Table 23: HMI settings
Communication parameter
Description
Main Unit Port/Automatic Ad-
dress
Automatically obtains the address for main unit port
from the relay’s HMI port
Main Unit Port/Address Static address used when the relay is connected to the
station network
Main Unit Port/Netmask Static network mask used when the relay is connected
to the station network
Main Unit Port/Gateway Gateway enabled when router is used between the relay
and the HMI
Main Unit Port/Gateway Ad-
dress
Router address
Service Port/Address Static address for the service port
Service Port/Netmask Static network mask for the service port
Service Port/Enable DHCP
server
Normally enabled to route service port automatically to
the main unit port and the relay
Configure the HMI service port and the main unit port to separate
subnetworks.
Service port DHCP server routes the main unit network automatically
to the service port.
7.4.3.1 Connecting local HMI directly to relay
• Use a CAT 6 S/FTP cable to connect the LHMI to the protection relay.
• Connect the cable to the X1.1/Main unit connector on the LHMI and to the
X0/HMI connector on the protection relay's communication module.
Commissioning
1MRS759118 D
126 REX640
Operation Manual