174 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
War n in g L e v el
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
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
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