Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 105)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 105
Protective Trip and Warning Functions Chapter 5
Current Imbalance Inhibit Time
Current Imbalance Inhibit Time (Parameter 259) allows the installer to inhibit a
current imbalance trip and warning from occurring during the motor starting
sequence. It is adjustable from 0…250 s.
Table 89 - Current Imbalance Inhibit Time (Parameter 259)
Current Imbalance Trip
The E300 Electronic Overload Relay will trip 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 will flash a red 7-short blink pattern
• Bit 6 in Current Trip Status (Parameter 4) will set to 1
• Bit 0 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Trip Relay will open
• Any relay outputs configured as a Control Relay will open
• Any relay outputs configured as a Trip Alarm will close
Any relay outputs configured as a Normal Relay will be 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 Sec