Ground fault trip – 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
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
Level for a time period greater than the Ground Fault Trip Delay
If the E300 Electronic Overload Relay trips on a ground fault, the:
•
TRIP/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