Rockwell-automation 592- E300 Overload Relay User Manual Manual de usuario Pagina 92

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92 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 73 - Ground Fault Inhibit Time (Parameter 242
Table 74 - Device Status 0 (Parameter 20)
Ground Fault Trip
The E300 Electronic Overload Relay will trip with a ground fault indication if:
No trip currently exists
Ground fault protection is enabled
Ground fault current is present
Ground Fault Inhibit Time has expired
Ground Fault Current is equal to or greater than the Ground Fault Trip
Le
vel for a time period greater than the Ground Fault Trip Delay
If the E300 Electronic Overload Relay trips on a ground fault, the:
T
RIP/WARN LED will flash a red 3-short blink pattern
Bit 2 in Current Trip Status (Parameter 4) will set to 1
Ground Fault Inhibit Time (Parameter 242)
Default Value 0
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Sec
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Function
X
Trip Present
X
Warning Present
X
Invalid Configuration
X
Current Present
X
Ground Fault Current Present
X
Voltage Present
X
Emergency Start Enabled
X
DeviceLogix Enabled
X
Feedback Timeout Enabled
X
Operator Station Present
X
Voltage Sensing Present
XInternal Ground Fault Sensing
Present
XExternal Ground Fault Sensing
Present
X
PTC Sensing
X
Ready

Reserved
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