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CHAPTER 6: SETPOINTS
Datalogger
NOTE:
NOTE
Front panel
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
The following setpoints are available:
SAMPLE RATE
Range: 1 cycle, 1 second, 1 minute, 1 hour
Default: 1 second
Determines how often data is stored in the data log.
CONTINUOUS MODE
Range: Disabled, Enabled
Default: Disabled
Determines whether or not the trigger data is overwritten with new data. Enabled will
overwrite the previous trigger data with new trigger data. When Disabled, the data log
will run until filled with 256 samples. Continuous Mode should be used when the data is
stored externally by a polling system. The sample rate should be chosen to match the
poll rate of the external program.
TRIGGER POSITION
Range: 0 to 100% steps of 1%
Default: 25%
Percentage of the sample buffer used for pretrigger samples.
TRIGGER SOURCE
Range: Command, Logic Element 1 to 8, Any Trip Pickup, Any Trip, Any Trip Dropout, Any
Alarm Pickup, Any Alarm, Any Alarm Dropout, Any Inhibit
Default: Command
Selects a trigger source. Command is always active. Logic Elements can be used to
create combinations of trigger sources.
CHANNEL 1 SOURCE
Range: Disabled, Phase A Current, Phase B Current, Phase C Current, Average Phase
Current, Motor Load, Current Unbalance, Ground Current, System Frequency, Vab, Vbc,
Vca, Van, Vbn, Vcn, Power Factor, Real Power (kW), Reactive Power (kvar), Apparent Power
(kVA), Positive Watthours, Positive Varhours, Hottest Stator RTD, Thermal Capacity Used,
RTD #1, RTD #2, RTD #3, RTD #4, RTD #5, RTD #6, RTD #7, RTD #8, RTD #9, RTD #10, RTD
#11, RTD #12
Default: Disabled
Selects the data to be stored for each sample of the data log channel.
Sources and Defaults for Channels 2 to 10 are the same as those for Channel 1.
The user can send a message to the display, that will override any normal message by
sending text through Modbus. Refer to the Feeder Protection System Communications
Guide for register details.
PATH:
SETPOINTS > S1 RELAY SETUP > FRONT PANEL
FLASH MESSAGE TIME
Range: 1 s to 65535 s
Default: 5 s
Flash messages are status, warning, error, or information messages displayed for
several seconds in response to certain key presses during setting programming. These
messages override any normal messages. The duration of a flash message on the
display can be changed to accommodate different reading rates.
S1 RELAY SETUP
6–47
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