Rockwell Automation 592- E300 Overload Relay User Manual User Manual
Page 176
176
Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
•
No trip currently exists
•
Under kVA Trip is enabled
•
Current is present
•
Voltage is present
•
Under kVA Inhibit Time has expired
•
The total apparent power (kVA) is less than the Under kVA Trip Level for
a time period greater than the Under kVA Trip Delay.
If the E300 Electronic Overload Relay trips on an under apparent power (kVA),
the:
•
TRIP/WARN LED status indicator will flash a red 2-long / 7-short blink
pattern
•
Bit 6 in Power Trip Status (Parameter 6) 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)
Under kVA Trip Delay
Under kVA Trip Delay (Parameter 403) allows the installer to define the time
period an under apparent power (kVA) condition must be present before a trip
occurs. It is adjustable from 0.1…25.0 seconds.
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)