Application - ABB RELION REX640 Technical Manual

1MRS759142 F
second until the output is reset to FALSE. The output remains in this state until the
Home button is pressed again.
The output signal WOKEN is activated whenever the HMI device is woken from a
low-power state. This generates a one-second boolean TRUE value pulse. After one
second, the output is reset to FALSE. A new output can be triggered once the HMI
has entered the low-power state.
The output CONNECTION is activated whenever the paired HMI is connected to the
protection relay. If the communication between the protection relay and the HMI is
severed, this output resets itself to FALSE until communication has been restored.
When an SHMI is connected and paired with the protection relay, the CONNECTION
output is activated when the user navigates from the SHMI navigation page to
the HMI view. The CONNECTION output is deactivated when the user returns to
the navigation view or the connection between the relay and the SHMI is lost. The
output can be used to visually indicate that the SHMI is connected to the relay in the
panel, and it works as an LHMI for the relay.
The output ALM_ACKED is activated when any alarms are acknowledged either by
the boolean rising edge on the ALM_ACK input or by acknowledging alarms from the
HMI. This generates a one-second boolean TRUE value pulse. After one second, the
output is reset to FALSE until some alarms are acknowledged. There is at least a
100 ms FALSE state between each pulse. If alarms are acknowledged from the HMI
during the TRUE state or within 100 ms after resetting to FALSE, additional pulses
are not be produced.
PCM600 parameters
EIHMI contains three paths to populate parameters visible in Parameter Setting in
PCM600.
• Configuration > HMI
• Monitoring > Detached LHMI
• Information > HW modules > EIHMI1
3.26.4

Application

Substation HMI wake-up (door sensor)
In this example, substation HMI devices need to be woken up when a person
enters the substation to see that everything works as expected.
A switch signal is directly connected to the binary input, which activates the
paired HMI.
Depending on the hardware solution, this hardware signal can be distributed
to all affected protection relays on the substation. Optionally, the processed
signal can be routed in horizontal communication through process bus
communications, that is, GOOSE, to other protection relays.
REX640
Technical Manual
Basic functions
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