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 76)

76 Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 3 Protective Trip & Warning Functions
• bit 0 in PW Warn Status, Parameter 228, will set to “1”, and
• bit 1 of Device Status, Parameter 21, will set to “1”.
UW Warn Level, Parameter 244, allows the installer to define the total real power
in which the E3 Plus Overload Relay will indicate a warning and is adjustable
from 0…32767.
Over Real Power Trip
The E3 Overload Relay will trip with an over real power indication if:
• no trip currently exists,
• Over Real Power protection is enabled,
• OW Inhibit Time has expired, and
• Total Real Power is equal to or greater than OW Trip Level for a time
period greater than the programmed OW Trip Delay.
When the over real power trip conditions are satisfied, the:
• TRIP/WARN LED will flash a red 2 long and 2 short blink pattern,
• bit 1 in PW Trip Status, Parameter 227, will set to “1”,
• bit 0 of Device Status, Parameter 21, will set to “1”,
• Trip Relay contact will be open, and
• outputs will be placed in their Protection Fault state (if so programmed).
OW Inhibit Time, Parameter 245, allows the installer to inhibit an over real
power trip from occurring during the motor starting sequence and is adjustable
from 0…250 seconds.
OW Trip Delay, Parameter 246, allows the installer to define the time period an
over real power condition must be present before a trip occurs. It is adjustable
from 0.1…25.0 seconds.
OW Trip Level, Parameter 247, allows the installer to define the total real power
in which the E3 Plus Overload Relay will trip. It is adjustable from 0…32767.
Over Real Power Warning
The E3 Overload Relay will immediately indicate an over real power warning
condition if:
• no warning currently exists,
• Over Real Power Warning is enabled,
• OW Inhibit Time has expired, and
• Total Real Power is equal to or greater than the OW Warn Level.