Rockwell Automation 592- E300 Overload Relay User Manual User Manual
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Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Over Frequency Trip
The E300 Electronic Overload Relay will trip with an Over Frequency indication
if:
•
No trip currently exists
•
Over Frequency Trip is enabled
•
Voltage is present
•
Over Frequency Inhibit Time has expired
•
The voltage frequency is greater than the Over Frequency Trip Level for a
time period greater than the Over Frequency Trip Delay.
If the E300 Electronic Overload Relay trips on an over frequency, the:
•
TRIP/WARN LED status indicator will flash a red 1-long / 6-short blink
pattern
•
Bit 5 in Voltage Trip Status (Parameter 5) will set to 1
•
Bit 0 in Device Status 0 (Parameter 20) will set to 1
•
Any relay outputs configured as a Trip Relay will open
•
Any relay outputs configured as a Control Relay will open
•
Any relay outputs configured as a Trip Alarm will close
•
Any relay outputs configured as a Normal Relay will be placed in their
Protection Fault state (if so programmed)
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)