Rockwell Automation 592- E300 Overload Relay User Manual User Manual
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Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
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L2 Line Loss Warning is enabled
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L2 Line Loss is activated via the appropriately programmed digital input
(see Input Assignments, Parameters 196-201, in Chapter 3)
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Line Loss Inhibit Timer has expired
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L2 Percent FLA (Parameter 48) is equal to 0%
When the L2 Line Loss Warning conditions are satisfied, the:
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TRIP/WARN LED will flash a yellow 15-short blink pattern
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Bit 14 in Current Warning Status (Parameter 10) will set to 1
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Bit 1 in Device Status 0 (Parameter 20) will set to 1
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Any relay outputs configured as a Warning Alarm will close
L3 Line Loss Trip
The E300 Electronic Overload Relay will trip with a L3 Line Loss indication if:
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No trip currently exists
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L3 Over Current Trip is enabled
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L3 Line Loss is activated via the appropriately programmed digital input
(see Input Assignments, Parameters 196-201, in Chapter 3)
•
Line Loss Inhibit Timer has expired
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L3 Percent FLA (Parameter 49) is equal to 0% for a time period greater
than the L3 Line Loss Trip Delay.
If the E300 Electronic Overload Relay trips on a L3 Line Loss, the:
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TRIP/WARN LED status indicator will flash a red 16-short blink pattern
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Bit 15 in Current Trip Status (Parameter 4) will set to 1
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Bit 0 in Device Status 0 (Parameter 20) will set to 1
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Any relay outputs configured as a Trip Relay will open
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Any relay outputs configured as a Control Relay will open
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Any relay outputs configured as a Trip Alarm will close
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Any relay outputs configured as a Normal Relay will be placed in their
Protection Fault state (if so programmed)
IMPORTANT
The L2 Line Loss Warning function does not include a time delay feature. Once
the Line Loss Inhibit Timer has expired, the L2 Line Loss Warning indication is
instantaneous.