176 Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6 Protective Trip and Warning Functions
L3 Over Current Trip Delay
L3 Over Current Trip Delay (Parameter 282) allows you to define the time
period an L3 Over Current condition must be present before a trip occurs. It is
adjustable from 0.1…25.0 seconds.
Table 214 - L3 Over Current Trip Delay (Parameter 282)
L3 Over Current Trip Level
L3 Over Current Trip Level (Parameter 283) allows you to define the current at
which the E300 Electronic Overload Relay trips on a L3 Over Current. It is user-
adjustable from 10…100% of the FLA Setting (Parameter 171).
Table 215 - L3 Over Current Trip Level (Parameter 283)
L3 Over Current Warning
The E300 Electronic Overload Relay indicates an L3 Over Current warning if:
• No warning currently exists
• L3 Over Current Warning is enabled
• Current is present
• The Over Current Inhibit Timer has expired
• L3 Percent FLA (Parameter 49) is greater than the L3 Over Current
War n in g L e v el
Default Value 1.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Seconds
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.
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