ABB UniSec Manuale di funzionamento e manutenzione - Pagina 8

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U N I S E C D I G I TA L M A N U A L E D I F U N Z I O N A M E N TO E M A N U T E N Z I O N E

Consult the single-line diagram of the switchgear to

find the positions of the sensors that transmit

temperature values to the LHMI module.

• Ambient parameters: The temperature and

humidity values measured by the ambient sensor

are displayed in this screen.

Consult the single-line diagram of the switchgear to

find out where the ambient sensor is installed.

• Gas tank pressure screen: The pressure value of

the gas-insulated disconnector is displayed in this

screen.

• System setting screen: This screen displays the

firmware version of the monitor and the modbus

communication address.

NOTE

Consult manual 2NGA000492 for further

details about use of the LHMI module

2NGA000492

2.6 Alarms and corrective

Concentrator MDC4 -M is configured by ABB with

warning and alarm thresholds for the temperature

measurements of the main circuit and for gas

pressure measurement.

Using the mobile App, the LHMI module or the leds

on the concentrator, you can check whether the

values measured in real time exceed the alarm

thresholds.

NOTE

The threshold values are defined on the

basis of the characteristics of the

components installed and the tests performed to

ensure the apparatus functions correctly.

The threshold values set by the manufacturer cannot

be changed.

Once one of the thresholds is exceeded, the

concentrator displays an alarm signal via the "Alarm"

led on the front of the concentrator while the

parameter that has exceeded the threshold is

specified in the LHMI module.

The measurement that exceeds the threshold also

appears in red in the mobile APP.

The example below shows a screen on the mobile

APP where one of the parameters is in the alarm

state: