Rockwell Automation Allen-Bradley E300

Rockwell Automation Publication 193-UM015D-EN-P - February 2015 175
Protective Trip and Warning Functions Chapter 6
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L3 Over Current Trip
The E300 Electronic Overload Relay trips with a L3 Over Current indication if:
• No trip currently exists
• L3 Over Current Trip is enabled
• Current is present
• Over Current Inhibit Timer has expired
• L3 Percent FLA (Parameter 49) is greater than the L3 Over Current Trip
Level for a time period greater than the L3 Over Current Trip Delay.
If the E300 Electronic Overload Relay trips on a L3 Over Current, the:
• TRIP/WARN LED status indicator flashes a red 13-short blink pattern
• Bit 12 in Current Trip Status (Parameter 4) sets to 1
• Bit 0 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as a Trip Relay open
• Any relay outputs configured as a Control Relay open
• Any relay outputs configured as a Trip Alarm close
• Any relay outputs configured as a Normal Relay are placed in their
Protection Fault state (if so programmed)
IMPORTANT
The L2 Over Current Warning function does not include a time delay feature.
Once the Over Current Inhibit Timer has expired, the L2 Over Current Warning
indication is instantaneous.
IMPORTANT
The Protection Fault State of Relay 0, Relay 1, Relay 2, Digital Module 1 Output
Relays, Digital Module 2 Output Relays, Digital Module 3 Output Relays, and
Digital Module 4 Output Relays are defined by the respective parameters:
• Output PT00 Protection Fault Action (Parameter 304)
• Output PT00 Protection Fault Value (Parameter 305)
• Output PT01 Protection Fault Action (Parameter 310)
• Output PT01 Protection Fault Value (Parameter 311)
• Output PT02 Protection Fault Action (Parameter 316)
• Output PT02 Protection Fault Value (Parameter 317)
• Output Digital Module 1 Protection Fault Action (Parameter 322)
• Output Digital Module 1 Protection Fault Value (Parameter 323)
• Output Digital Module 2 Protection Fault Action (Parameter 328)
• Output Digital Module 2 Protection Fault Value (Parameter 329)
• Output Digital Module 3 Protection Fault Action (Parameter 334)
• Output Digital Module 3 Protection Fault Value (Parameter 335)
• Output Digital Module 4 Protection Fault Action (Parameter 340)
• Output Digital Module 4 Protection Fault Value (Parameter 342)