5.1.6. Target LEDs and operation target messages
The operation of the relay can be monitored via the HMI by means of LED targets
and text messages on the LCD. On the front panel of the relay there are three target
LEDs with fixed functionality:
*
Green target LED (ready)
*
Yellow target LED (pickup/alarm)
*
Red target LED (trip)
In addition, there are eight programmable LEDs and an target LED for front
communication. Refer to the Operator’s Manual for a more thorough presentation.
The target messages on the LCD have a certain priority order. If different types of
targets are activated simultaneously, the message with the highest priority appears
on the LCD.
The priority order of the operation target messages:
1. CBFAIL
2. Trip
3. Pickup/Alarm
4. Restart disable
4.1. Thermal protection
4.2. Cumulative start-up time counter
4.3. External restart disable
5.1.7. Motor running time counter
The motor running time counter provides history data since last commissioning. The
counter counts the total number of motor running hours and is incremented when
one or several phase currents have exceeded twelve per cent of the FLA of the motor
for 100 running hours. The running time is stored in the EEPROM. The counter can
be read via the HMI but changed only via parameter V53.
Writing to parameter V53 will reset the number of motor start ups.
5.1.8. Demand values
The relay provides three different kinds of demand values.
The first value shows the average current of all three phases measured during one
minute. The value is updated once a minute.
The second value shows the average current during an adjustable time range,
ranging from 0 to 999 minutes, with an accuracy of one minute. This value is
updated at the expiration of each time range.
64
REM 610REM 610
Motor Protection Relay
Technical Reference Manual - ANSI Version
1MRS755537
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