Rockwell Automation Publication 193-UM015D-EN-P - February 2015
159
Protective Trip and Warning Functions
Chapter 6
Table 195 - Current Imbalance Trip Level (Parameter 261)
Current Imbalance Warning
The E300 Electronic Overload Relay indicates a current imbalance warning if:
•
No warning currently exists
•
Current Imbalance Warning is enabled
•
Current is present
•
Current Imbalance Inhibit Time has expired
•
The current imbalance (parameter 52) is greater than the Current
Imbalance Warning Level
When the Current Imbalance Warning conditions are satisfied, the:
•
TRIP/WARN LED flashes a yellow 7-short blink pattern
•
Bit 6 in Current Warning Status (Parameter 10) sets to 1
•
Bit 1 in Device Status 0 (Parameter 20) sets to 1
•
Any relay outputs configured as a Warning Alarm closes
Current Imbalance Warning Level
Current Imbalance Warning Level (Parameter 262) allows you to define the
percentage at which the E300 Electronic Overload Relay indicates a warning. It is
user-adjustable from 10…100%.
Table 196 - Current Imbalance Warning Level (Parameter 262)
Default Value
35
Minimum Value
10
Maximum Value
100
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
%
IMPORTANT
The Current Imbalance Inhibit Timer starts after a phase of load current
transitions from 0 A to 30% of the minimum FLA setting of the device. The
E300
Electronic Overload Relay does not begin monitoring for a current
imbalance condition until the Current Imbalance Inhibit Time expires.
Default Value
20
Minimum Value
10
Maximum Value
100
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
%
Summary of Contents for Allen-Bradley E300
Page 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Page 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Page 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Page 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
Page 545: ......