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 80)

80 Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 3 Protective Trip & Warning Functions
• bit 4 in PW Trip Status, Parameter 227, will set to “1”,
• bit 0 of Device Status, Parameter 21, will go to “1”,
• Trip Relay contact will be open, and
• outputs will be placed in their Protection Fault state (if so programmed).
UVARG Inhibit Time, Parameter 257, allows the installer to inhibit an under
reactive power generated trip from occurring during the motor starting sequence
and is adjustable from 0…250 seconds.
UVARG Trip Delay, Parameter 258, allows the installer to define the time period
an under reactive power generated condition must be present before a trip occurs.
It is adjustable from 0.1…25.0 seconds.
UVARG Trip Level, Parameter 259, allows the installer to define the total
reactive power generated in which the E3 Plus Overload Relay will trip. It is
adjustable from -32767 …0.
Under Reactive Power Generated Warning
The E3 Overload Relay will immediately indicate an under reactive power
generated warning condition if:
• no warning currently exists,
• Under Reactive Power generated Warning is enabled,
• UVARG Inhibit Time has expired, and
• Total Reactive Power is equal to or less than the UVARG Warn Level.
When the under reactive power generated warning conditions are satisfied, the
following will occur:
• TRIP/WARN LED will flash an amber 2 long and 5 short blink pattern,
• bit 4 in PW Warn Status, Parameter 228, will set to “1”, and
• bit 1 of Device Status, Parameter 21, will set to “1”.
UVARG Warn Level, Parameter 260, allows the installer to define the total
reactive power generated in which the E3 Plus Overload Relay will indicate a
warning and is adjustable from -32767…0.
Over Reactive Power Generated Trip
The E3 Overload Relay will trip with an over reactive power generated indication
if:
• no trip currently exists,
• Over Reactive Power Generated protection is enabled,
• OVARG Inhibit Time has expired, and