MPA3 V6.3 MOTOR PROTECTION RELAY MANUAL
Issue: R0, Date: 11/2010, CRN: 8168
MPAB010 Rev0
MPA3 V6.2 Motor Protection Relay Manual
Page 10
4.1
Status Messages
The following table (
) shows a list of the twenty-three status messages and the category (type) of the
messages. Messages are cleared according to their message category.
Type 1:
Messages are triggered by their respective functions and cleared by operating the <RESET> key/digital
input.
Type 2:
Messages are triggered and cleared automatically.
Type 3:
Messages are triggered by their respective trip functions. Messages are cleared by closing the lock input,
and then operating the <RESET> key/digital input, and then releasing the lock input.
Message and Type
Comment
Motor O/L Trip
1/2 Over Current Function Tripped
Short Cct Trip
3
Short Circuit Function Tripped
Cur. bal. Trip
1
Phase Current Balance Function Tripped
Earth Leak Trip
1
Earth Leakage Function Tripped
Residual I Trip
1
Residual Current Function Tripped
Thermistor Trip
1
Thermistor PTC Function Tripped
Under Volts Trip
1
Under Volts Function Tripped
MPA Memory Error
1
Corrupted memory in relay’s stored settings
RTD Group1 Trip
1
RTD Group 1 Function Tripped
RTD Group2 Trip
1
RTD Group 2 Function Tripped
Motor Cont. Fail
1
Main Contactor Fail Function Tripped
Insulat.Test Trip
1
Insulation Test Function Tripped
High Cur. Alarm
2
Phase current above set threshold level
Over Load Alarm
2
Thermal Accumulator above set threshold level
Under Cur. Alarm
2
Phase current below set threshold level
Earth Leak Alarm
2
Earth leakage Current is above the set threshold level
RTD Group1 Alarm
2
Group 1Temperature above set threshold level
RTD Group2 Alarm
2
Group 2 Temperature above set threshold level
Insulat. Test Alarm
1/2 Test result at alarm level
Testing Insulat.
2
In process of Insulation Test
IT Enable Open
2
Insulation test disabled.
Insulat. Test OK
2
Insulation Test above the set threshold
Motor Stopped
2
MCI Open
Motor Amps:
2
MCI Closed
Table 4.1
