GE 469

6–6 469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
Immediately prior to issuing a trip, the 469 takes a snapshot of motor parameters and
stores them as pre-trip values that allow for troubleshooting after the trip occurs. The
CAUSE OF LAST TRIP message is updated with the current trip and the screen defaults to
that message. All trip features are automatically logged as date and time stamped events
as they occur. This information may include motor speed (2-Speed feature or Assignable
Digital Input), phase and ground currents, RTD temperatures, voltages, frequency, power
quantities, and analog inputs. This information can be cleared using the
S1 469 SETUP ZV
CLEAR DATA ZV CLEAR LAST TRIP DATA settings.
The
CAUSE OF LAST TRIP actual value has the following range: No Trip to Date, Incomplete
Sequence, Remote Trip, Speed Switch, Load Shed, Pressure Switch, Vibration Switch,
General Sw, Overload, Short Circuit, Mechanical Jam, Undercurrent, Current Unbalance,
Ground Fault, Phase Differential, Acceleration, Tachometer, RTDs #1 to #12, Undervoltage,
Overvoltage, Phase Reversal, Frequency, Reactive Power, Power Factor, Underpower,
Analog Inputs 1 to 4, Single Phasing, Reverse Power, Analog Diff 1-2, Analog Diff 3-4.
Note
Phase, differential, and ground currents are recorded 1 cycle prior to the trip. All other pre-
trip data is recorded 50 ms prior to the trip. Thus some values will not be recorded upon
instantaneous trips during a start if the trip is less than 50 ms.
MESSAGE
HOTTEST BEARING
RTD
Range: –50 to 250°C or –58 to 482°F.
Seen only if at least 1 RTD is set
as Bearing
MESSAGE
HOTTEST OTHER RTD
RTD #11: 0°C Pre-
Range: –50 to 250°C or –58 to 482°F.
Seen only if at least 1 RTD is set
as Other
MESSAGE
AMBIENT RTD
RTD#12: 0°C Pre-
Range: –50 to 250°C or –58 to 482°F.
Seen only if at least 1 RTD is set
as Ambient
MESSAGE
Vab: 0 Vbc:
0
Range: 0 to 20000 V. Not seen if VT
Connection is set as None
MESSAGE
Van: 0 Vbn:
0
Range: 0 to 20000 V. Seen only if VT
Connection is set as Wye
MESSAGE
PRETRIP SYSTEM
FREQUENCY: 0.00
Range: Not seen if VT Connect. set as
None
MESSAGE
0 kW 0
kVA
Range: –50000 to 50000 kVA. Not seen
if VT Connection set as None
MESSAGE
POWER FACTOR
PreTrip: 0.00
Range: 0.01 to 0.99 Lead or Lag, 0.00,
1.00. Not seen if VT Connection
is set as “None”
MESSAGE
Analog I/P 1
PreTrip: 0 Units
Range: –50000 to 50000. Not seen if
Analog Input 1 is “Disabled”.
MESSAGE
Analog I/P 2
PreTrip: 0 Units
Range: –50000 to 50000. Not seen if
Analog Input 2 is “Disabled”.
MESSAGE
Analog I/P 3
PreTrip: 0 Units
Range: –50000 to 50000. Not seen if
Analog Input 3 is “Disabled”.
MESSAGE
Analog I/P 4
PreTrip: 0 Units
Range: –50000 to 50000. Not seen if
Analog Input 4 is “Disabled”.