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 83)

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 83
Protective Trip & Warning Functions Chapter 3
UVA Warn Level, Parameter 268, allows the installer to define the total apparent
power in which the E3 Plus Overload Relay will indicate a warning and is
adjustable from 0…32767.
Over Apparent Power Trip
The E3 Overload Relay will trip with an over apparent power indication if:
• no trip currently exists,
• Over Apparent Power protection is enabled,
• OVA Inhibit Time has expired, and
• Total Apparent Power is equal to or greater than OVA Trip Level for a time
period greater than the programmed OVA Trip Delay.
When the over apparent power trip conditions are satisfied, the:
• TRIP/WARN LED will flash a red 2 long and 8 short blink pattern,
• bit 7 in PW Trip Status, Parameter 227, will go 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).
OVA Inhibit Time, Parameter 269, allows the installer to inhibit an over
apparent power trip from occurring during the motor starting sequence and is
adjustable from 0…250 seconds.
OVA Trip Delay, Parameter 270, allows the installer to define the time period an
over apparent power condition must be present before a trip occurs. It is
adjustable from 0.1…25.0 seconds.
OVA Trip Level, Parameter 271, allows the installer to define the total apparent
power in which the E3 Plus Overload Relay will trip. It is adjustable from
0…32767.
Over Apparent Power Warning
The E3 Overload Relay will immediately indicate an over apparent power
warning condition if:
• no warning currently exists,
• Over Apparent Power Warning is enabled,
• OVA Inhibit Time has expired, and
• Total Apparent Power is equal to or greater than the OVA Warn Level.
When the over apparent power warning conditions are satisfied, the:
• TRIP/WARN LED will flash an amber 2 long and 8 short blink pattern,