P92x/EN CT/E11 Technical Guide
Courier Database
Page 76/118 MiCOM P921-P922-P923
2.4.6 Logic Input status word
The logic control input status can be observed in proceeding to a selective call from
the cell of menu 0020. The 2 bits inferior of the returned value indicating the status
of each of the 2 logic inputs. This cell is accessible only in reading.
Bit 0: Logic Input 1
Bit 1: Logic Input 2
Bit 2: Logic Input 3
Bit 3: Logic Input 4
Bit 4: Logic Input 5
2.4.7 Output Relay Status word
The output relay status can be observed in proceeding to a selective call from the cell
of menu 0021. The 8 bits inferior to the returned value indicating the status of each
of the seven output relays . This cell is accessible only in reading.
Bit 0: relay 1 (TRIP)
Bit 1,2,3: programmable relays n° 2,3,4,
Bit 4: Watchdog
Bit 5,6,7,8: programmable relays n° 5,6,7,8
2.4.8 Alarm Information
The status of internal controls triggered by the auto-control program of the relays can
be observed in proceeding to a selective call of the cell of menu 0022.
The bits 0 to 6 indicate the material controls of the product.
Bit 0 Analog Output Error
Bit 1 Communication Error
Bit 2 EEPROM Data error
Bit 3 VT Error
Bit 4 Clock Error
Bit 5 EEPROM Calibration error
Bit 6 RAM Error
2.4.9 Protection Indication
The protection indications provide the status of different protection elements in the
relay; and thus the fault indications are so generated. In case of a fault recording,
these indications are transmitted to an events recorder. This is the only way to access
to these indications.
The status of the internal protection indication of the relays can be observed in
proceeding to a selective call of the cell of menu 0023 , 0024, 0025 and 0026.
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