CHAPTER 6: ACTUAL VALUES
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 6–29
The 489 Event Recorder stores generator and system information each time an event
occurs. The description of the event is stored and a time and date stamp is also added to
the record.
Note
The event recorder data may be inaccurate if 489 relay power-on time is less than
2seconds.
The date and time stamping feature allows reconstruction of the sequence of events for
troubleshooting. Events include all trips, any alarm optionally (except Service Alarm, and
489 Not Inserted Alarm, which always records as events), loss of control power, application
of control power, thermal resets, simulation, serial communication starts/stops, and
general input control functions optionally.
E001 is the most recent event and E256 is the oldest event. Each new event bumps the other
event records down until the 256th event is reached. The 256th event record is lost when
the next event occurs. This information can be cleared using
S1 489 SETUP ZV CLEAR DATA
ZV CLEAR EVENT RECORD setpoint. The event record will not update if a digital input
programmed as Test Input is shorted.
MESSAGE
HOTTEST OTHER
RTD#11: 0°C E001
Range: –50 to +250°C. Seen only if 1 or
more RTDs are set as Other.
MESSAGE
AMBIENT
RTD#12 0°C E001
Range: –50 to +250°C. Seen only if 1 or
more RTDs are set as Ambient.
MESSAGE
ANALOG INPUT 1
E001: 0.0 Units
Range: –50000 to 50000. Reflects the
Analog Input name. Not seen if
Analog Input 1 is disabled.
MESSAGE
ANALOG INPUT 2
E001: 0.0 Units
Range: –50000 to 50000. Reflects the
Analog Input name. Not seen if
Analog Input 2 is disabled.
MESSAGE
ANALOG INPUT 3
E001: 0.0 Units
Range: –50000 to 50000. Reflects the
Analog Input name. Not seen if
Analog Input 3 is disabled.
MESSAGE
ANALOG INPUT 4
E001: 0.0 Units
Range: –50000 to 50000. Reflects the
Analog Input name. Not seen if
Analog Input 4 is disabled.
Table 6–1: Cause of Events (Sheet 1 of 2)
TRIPS
Ambient RTD12 Trip * Analog I/P 1 to 4 Trip * Bearing RTD 7 Trip * Bearing RTD 8 Trip *
Bearing RTD 9 Trip * Bearing RTD 10 Trip * Differential Trip Distance Zone 1 Trip
Distance Zone 2 Trip Field-Bkr Discr. Trip Gnd Directional Trip Ground O/C Trip
Hiset Phase O/C Trip
Inadvertent Energization
Trip
Input A to G Trip * Loss of Excitation 1
Loss of Excitation 2 Low Fwd Power Trip Neg Seq O/C Trip Neutral O/V Trip
Neut. U/V (3rd) Trip Offline O/C Trip Overfrequency Trip Overvoltage Trip
* reflects the name as programmed
Courtesy of NationalSwitchgear.com
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