Rockwell Automation Publication 193-UM015D-EN-P - February 2015
143
Protective Trip and Warning Functions
Chapter 6
Table 175 - Overload Reset Level (Parameter 248)
Ground Fault Filter
An E300 Electronic Overload Relay can filter ground fault currents for High
Resistance Grounded (HRG) systems from its current-based protection trip and
warning functions, which include:
•
Thermal overload
•
Current imbalance
•
Jam
•
Stall
The Ground Fault Filter is useful for smaller-sized motors that trip unexpectedly
due to a controlled ground fault current that is significant relative to the current
draw of the electric motor. Ground Fault Filter (Parameter 131) allows you to
enable this filter.
Table 176 - Ground Fault Filter (Parameter 247
This filter only disables the effects of the ground fault current from the current-
based motor protection trip and warning functions. Current-based diagnostic
data is reported unfiltered when this feature is enabled.
Ground Fault Inhibit Time
Ground Fault Inhibit Time (Parameter 242) allows you to inhibit a ground fault
trip and warning from occurring during the motor starting sequence and is
adjustable from 0…250 seconds. The ground fault inhibit time begins when the
Current Present (bit 3) or Ground Fault Current Present (bit 4) is set in Device
Status 0 (Parameter 20).
Overload Reset Level (Parameter 248)
Default Value
0 = Disable
Minimum Value
0 = Disable
Maximum Value
1 = Enable
Parameter Type
BOOL
Size (Bytes)
1
Scaling Factor
1
Units
Ground Fault Filter (Parameter 247)
Default Value
0 = Disable
Minimum Value
0 = Disable
Maximum Value
1 = Enable
Parameter Type
BOOL
Size (Bytes)
1
Scaling Factor
1
Units
Содержание Allen-Bradley E300
Страница 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Страница 124: ...124 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 4 System Operation and Configuration Notes...
Страница 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Страница 292: ...292 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 6 Protective Trip and Warning Functions...
Страница 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Страница 372: ...372 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 8 Metering and Diagnostics...
Страница 460: ...460 Rockwell Automation Publication 193 UM015D EN P February 2015 Appendix A Specifications Notes...
Страница 501: ...Rockwell Automation Publication 193 UM015D EN P February 2015 501 Parameter List AppendixB Notes...
Страница 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
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