GE Multilin 489

5–10 489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
Z Enter the current valid passcode.
Z Press
MESSAGE DOWN to display the CHANGE PASSCODE message
and follow the directions.
If an invalid passcode is entered, the encrypted passcode is viewable by
pressing
HELP.
Z Consult GE Multilin with this number if the currently programmed
passcode is unknown. The passcode can be determined with deciphering
software.
5.2.2 Preferences
PATH: SETPOINTS Z S1 489 SETUP ZV PREFERENCES
Some of the 489 characteristics can be modified to suit different situations. Normally the
S1 489 SETUP ZV PREFERENCES setpoints group will not require any changes.
• DEFAULT MESSAGE CYCLE TIME: If multiple default messages are chosen, the display
automatically cycles through these messages. The messages display time can be
changed to accommodate different reading rates.
• DEFAULT MESSAGE TIMEOUT: If no keys are pressed for a period of time then the relay
automatically scans through a programmed set of default messages. This time can be
modified to ensure messages remain on the screen long enough during programming
or reading of actual values.
• PARAMETER AVERAGES CALCULATION PERIOD: The period of time over which the
parameter averages are calculated may be adjusted with this setpoint. The
calculation is a sliding window.
• TEMPERATURE DISPLAY: Measurements of temperature may be displayed in either
Celsius or Fahrenheit. Each actual value temperature message will be denoted by
either °C for Celsius or °F for Fahrenheit. RTD setpoints are always displayed in Celsius.
• WAVEFORM TRIGGER: The trigger setpoint allows the user to adjust how many pre-
trip and post-trip cycles are stored in the waveform memory when a trip occurs. A
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PREFERENCES [Z]
DEFAULT MESSAGE
CYCLE TIME: 2.0 s
Range: 0.5 to 10.0 s in steps of 1
MESSAGE
DEFAULT MESSAGE
TIMEOUT: 300 s
Range: 10 to 900 s in steps of 1
MESSAGE
PARAMETER AVERAGES
CALC. PERIOD: 15 min
Range: 1 to 90 min. in steps of 1
MESSAGE
TEMPERATURE DISPLAY:
Celsius
Range: Celsius, Fahrenheit
MESSAGE
WAVEFORM TRIGGER
POSITION: 25%
Range: 1 to 100% in steps of 1
MESSAGE
WAVEFORM MEM BUFFER
8x14 cycles
Range: 1x64, 2x42, 3x32, 4x35, 5x21,
6x18, 7x16, 8x14, 9x12, 10x11,
11x10, 12x9, 13x9, 14x8, 15x8,
16x7 cycles
Courtesy of NationalSwitchgear.com