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Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6
Protective Trip and Warning Functions
L1 Over Current Warning Level
L1 Over Current Warning Level (Parameter 278) allows you to define the current
at which the E300 Electronic Overload Relay indicates a L1 Over Current
warning. It is user-adjustable from 10…100% for the FLA Setting (Parameter
171).
Table 210 - L1 Over Current Warning Level (Parameter 278)
L2 Over Current Trip
The E300 Electronic Overload Relay trips with a L2 Over Current indication if:
•
No trip currently exists
•
2 Over Current Trip is enabled
•
Current is present
•
Over Current Inhibit Timer has expired
•
2 Percent FLA (Parameter 48) is greater than the L2 Over Current Trip
Level for a time period greater than the L2 Over Current Trip Delay.
If the E300 Electronic Overload Relay trips on a L2 Over Current, the:
•
TRIP/WARN LED status indicator flashes a red 12-short blink pattern
•
Bit 11 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)
Default Value
90
Minimum Value
10
Maximum Value
100
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
%FLA
IMPORTANT
The L1 Over Current Warning function does not include a time delay feature.
Once the Over Current Inhibit Timer has expired, the L1 Over Current Warning
indication is instantaneous.
Содержание Allen-Bradley E300
Страница 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Страница 124: ...124 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 4 System Operation and Configuration Notes...
Страница 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Страница 292: ...292 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 6 Protective Trip and Warning Functions...
Страница 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Страница 372: ...372 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 8 Metering and Diagnostics...
Страница 460: ...460 Rockwell Automation Publication 193 UM015D EN P February 2015 Appendix A Specifications Notes...
Страница 501: ...Rockwell Automation Publication 193 UM015D EN P February 2015 501 Parameter List AppendixB Notes...
Страница 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
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