Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual - Manual (Page 87)

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 87
Protective Trip & Warning Functions Chapter 3
UPFLD Inhibit Time, Parameter 281, allows the installer to inhibit an under
power factor leading trip from occurring during the motor starting sequence and
is adjustable from 0…250 seconds.
UPFLD Trip Delay, Parameter 282, allows the installer to define the time period
an under power factor leading condition must be present before a trip occurs. It is
adjustable from 0.1…25.0 seconds.
UPFLD Trip Level, Parameter 283, allows the installer to define the total power
factor leading in which the E3 Plus Overload Relay will trip. It is adjustable from
0…32767.
Under Power Factor Leading Warning
The E3 Overload Relay will immediately indicate an under power factor leading
warning condition if:
• no warning currently exists,
• Under Power Factor Leading Warning is enabled,
• UPFLD Inhibit Time has expired, and
• Total PF is equal to or less than the UPFLD Warn Level.
When the under power factor leading warning conditions are satisfied, the:
• TRIP/WARN LED will flash an amber 2 long and 11 short blink pattern,
• bit 10 in PW Warn Status, Parameter 228, will set to “1”, and
• bit 1 of Device Status, Parameter 21, will set to “1”.
UPFLD Warn Level, Parameter 284, allows the installer to define the total power
factor leading in which the E3 Plus Overload Relay will indicate a warning and is
adjustable from 0…32767.
Over Power Factor Leading Trip
The E3 Overload Relay will trip with an over power factor leading indication if:
no trip currently exists,
Over Power Factor Leading protection is enabled,
OPFLD Inhibit Time has expired, and
Total PF is equal to or greater than OPFLD Trip Level for a time period greater
than the programmed OPFLD Trip Delay.
When the over power factor leading trip conditions are satisfied, the:
• TRIP/WARN LED will flash a red 2 long and 12 short blink pattern,