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Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6
Protective Trip and Warning Functions
Table 212 - L2 Over Current Trip Level (Parameter 280).
L2 Over Current Warning
The E300 Electronic Overload Relay indicates an L2 Over Current warning if:
•
No warning currently exists
•
2 Over Current Warning is enabled
•
Current is present
•
The Over Current Inhibit Timer has expired
•
2 Percent FLA (Parameter 48) is greater than the L2 Over Current
Warning Level
When the L2 Over Current Warning conditions are satisfied, the:
•
TRIP/WARN LED flashes a yellow 12-short blink pattern
•
Bit 11 in Current Warning Status (Parameter 10) sets to 1
•
Bit 1 in Device Status 0 (Parameter 20) sets to 1
•
Any relay outputs configured as a Warning Alarm closes
L2 Over Current Warning Level
L2 Over Current Warning Level (Parameter 281) allows you to define the current
at which the E300 Electronic Overload Relay indicates a L2 Over Current
warning. It is user-adjustable from 10…100% for the FLA Setting (Parameter
171).
Table 213 - L2 Over Current Warning Level (Parameter 281)
Default Value
100
Minimum Value
10
Maximum Value
100
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
%FLA
IMPORTANT
The Over Current Inhibit Timer starts after the maximum phase of load current
transitions from 0 A to 30% of the minimum FLA setting of the device. The
E300 Electronic Overload Relay does not begin monitoring for an overcurrent
condition until the Over Current Inhibit Time expires.
Default Value
90
Minimum Value
10
Maximum Value
100
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
%FLA
Summary of Contents for Allen-Bradley E300
Page 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Page 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Page 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Page 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
Page 545: ......