ABB REF542plus Operator's Manual page 14

REF542plus
14
Multifunction Protection and Switchgear Control
Unit
Operator's manual
Measurements: it displays the available measurements.
*
Resets: to acknowledge alarms and other quantities.
*
Events: to display protection starts and trips events.
*
Protection: it displays the protection functions installed in the unit, and
*
allows displaying and changing their settings.
Control: it displays the control functions list installed in the unit and
*
allows displaying and changing their settings.
Service: relevant information on the HW and SW configurations and basic
*
setting of REF542plus.
Tests: to access the test mode for the HMI and the primary objects.
*
Access to a few submenus is allowed only in some modes.
LED bars: The three LED bars are available to show the most relevant
*
measurements acquired by REF542plus for a quick inspection of the
switchgear load situation. The three bars are marked M1, M2, and M3.
Each bar is composed of twelve LEDs, ten green and two red ones. The
ten green LEDs are normally dedicated to display between 0% and 100%
of the nominal value of the configured measurement. Each LED
corresponding then to 10% of the nominal value. The two red LEDs
indicate an overload condition of 20%. The measurements displayed by
the bars are set with the Operating Tool.
Indication LEDs: 8 freely programmable, three-color LEDs are available
*
for indications. There are 4 pages of these LEDs. As a result, a total of 32
indication options can be programmed for events and status regarding
protection, control, monitoring, binary inputs and so on. The assignment
of the LED to a specific condition is done with the Operating Tool.
Optical interface: This is the optical serial interface port to connect
*
REF542plus to a personal computer. By using the appropriate cable and
the Operating Tool, the following actions are possible:
Download a configuration into the unit.
*
Upload the current configuration from the unit.
*
After a fault, upload the fault recorder data. This is possible only if the
*
fault recorder has been previously enabled with the Operating Tool.
Upload other information (measurements, binary inputs status, binary output
status).
Do not make any changes to the REF542plus configuration
unless you are familiar with REF542plus and the Operating
Tool. This might result in malfunction and loss of warranty.
1MRS755869