Rockwell Automation Publication 193-UM015D-EN-P - February 2015
157
Protective Trip and Warning Functions
Chapter 6
Current Imbalance Inhibit Time
Current Imbalance Inhibit Time (Parameter 259) allows you to inhibit a current
imbalance trip and warning from occurring during the motor starting sequence. It
is adjustable from 0…250 s.
Table 193 - Current Imbalance Inhibit Time (Parameter 259)
Current Imbalance Trip
The E300 Electronic Overload Relay trips with a current imbalance indication if:
•
No trip currently exists
•
Current Imbalance Trip is enabled
•
Current is present
•
Current Imbalance Inhibit Time has expired
•
The Current Imbalance (parameter 52) is greater than the Current
Imbalance Trip Level for a time period greater than the Current Imbalance
Trip Delay.
If the E300 Electronic Overload Relay trips on a current imbalance, the:
•
TRIP/WARN LED status indicator flashes a red 7-short blink pattern
•
Bit 6 in Current Trip Status (Parameter 4) sets to 1
•
Bit 0 in Device Status 0 (Parameter 20) sets to 1
•
Any relay outputs configured as a Trip Relay open
•
Any relay outputs configured as a Control Relay open
•
Any relay outputs configured as a Trip Alarm close
•
Any relay outputs configured as a Normal Relay are placed in their
Protection Fault state (if so programmed)
Default Value
10
Minimum Value
0
Maximum Value
250
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
Seconds
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: ......