Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 122)

122 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 108 - L2 Over Current Trip Level (Parameter 280).
L2 Over Current Warning
The E300 Electronic Overload Relay will indicate 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 will flash a yellow 12-short blink pattern
• Bit 11 in Current Warning Status (Parameter 10) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
L2 Over Current Warning Level
L2 Over Current Warning Level (Parameter 281) allows the user to define the
current at which the E300 Electronic Overload Relay will indicate a L2 Over
Current warning. It is user-adjustable from 10…100% for the FLA Setting
(Parameter 171).
Table 109 - 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 0A to 30% of the device’s minimum FLA setting. The E300
Electronic Overload Relay does not begin monitoring for an over current
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