242 Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6 Protective Trip and Warning Functions
Table 296 - Under Power Factor Leading Warn Level (Parameter 421)
Over Power Factor Leading Trip
The E300 Electronic Overload Relay trips with an Over Power Factor Leading
indication if:
• No trip currently exists
• Over Power Factor Leading Trip is enabled
• Current is present
• Voltage is present
• Over Power Factor Leading Inhibit Time has expired
• The total power factor leading is greater than the Over Power Factor
Leading Trip Level for a time period greater than the Over Power Factor
Leading Trip Delay.
If the E300 Electronic Overload Relay trips on an over power factor leading, the:
• TRIP/WARN LED status indicator flashes a red 2-long / 12-short blink
pattern
• Bit 11 in Power Trip Status (Parameter 6) sets to 1
• Bit 0 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as a Trip Relay open
• Any relay outputs configured as a Control Relay open
• Any relay outputs configured as a Trip Alarm close
• Any relay outputs configured as a Normal Relay are placed in their
Protection Fault state (if so programmed)
Default Value 95
Minimum Value 100
Maximum Value 0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %
The Under Power Factor Leading Warning function does not include a time
delay feature. Once the Under Power Factor Leading Inhibit Time has expired,
the Under Power Factor Leading Warning indication is instantaneous.
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