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 67)

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 67
Protective Trip & Warning Functions Chapter 3
When the remote trip condition sensor contact closes, the:
• TRIP/WARN LED will flash a red 15-blink pattern,
• bit 14 in Trip Status, Parameter 14, will set to “1”,
• Trip Relay contact will open, and
• outputs will be placed in their Protection Fault State (if so programmed).
Voltage Protection
The E3 Plus model EC5 has the capability to protect against poor voltage quality
by offering voltage based protection. The user can prevent a contactor from
energizing if the voltage is either too high or too low.
Under Voltage (UV) Trip
The E3 Overload Relay will trip with a UV indication if:
• no trip currently exists,
• Under Voltage protection is enabled,
• UV Inhibit Time has expired, and
• the Average Voltage L-L is equal to or less than the UV Trip Level for a
time period greater than the programmed UV Trip Delay.
When the under voltage trip conditions are satisfied, the:
• TRIP/WARN LED will flash a red 1 long and 2 short blink pattern,
• bit 1 in UV Trip Status, Parameter 160, 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).
UV Inhibit Time, Parameter 215, allows the installer to inhibit an under voltage
trip from occurring during the motor starting sequence and is adjustable from
0…250 seconds.
UV Trip Delay, Parameter 216, allows the installer to define the time period an
under voltage condition must be present before a trip occurs. It is adjustable from
0.1…25.0 seconds.
UV Trip Level, Parameter 217, allows the installer to define the average L-L
voltage in which the E3 Plus Overload Relay will trip. It is adjustable from
0…65535 V.
IMPORTANT The Protection Fault State of OUT A and OUT B is defined by:
• OUTA Pr FltState, Parameter 65
• OUTA Pr FltValue, Parameter 66
• OUTB Pr FltState, Parameter 71
• OUTB Pr FltValue, Parameter 72