Rockwell-automation 592- E300 Overload Relay User Manual Instrukcja Użytkownika Strona 130

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130 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
L2 Line Loss Warning is enabled
L2 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
L2 Percent FLA (Parameter 48) is equal to 0%
When
the L2 Line Loss Warning conditions are satisfied, the:
TRIP/WARN LED will flash a yellow 15-short blink pattern
Bit 14 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
L3 Line Loss Trip
The E300 Electronic Overload Relay will trip with a L3 Line Loss indication if:
No trip currently exists
L3 Over Current Trip is enabled
L3 Line Loss is activated via the appropriately programmed digital input
(see
Input Assignments, Parameters 196-201, in Chapter 3)
L
ine Loss Inhibit Timer has expired
L3 Percent FLA (Parameter 49) is equal to 0% for a time period greater
tha
n the L3 Line Loss Trip Delay.
If the E300 Electronic Overload Relay trips on a L3 Line Loss, the:
TRIP/WARN LED status indicator will flash a red 16-short blink pattern
Bit 15 in Current Trip Status (Parameter 4) will set to 1
Bit 0 in Device Status 0 (Parameter 20) will set to 1
Any relay outputs configured as a Trip Relay will open
Any relay outputs configured as a Control Relay will open
Any relay outputs configured as a Trip Alarm will close
Any relay outputs configured as a Normal Relay will be placed in their
P
r
otection 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.
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