Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 156)

156 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 149 - Over kW Inhibit Time (Parameter 382)
Under kW Trip
The E300 Electronic Overload Relay will trip with an Under kW indication if:
• No trip currently exists
• Under kW Trip is enabled
• Current is present
• Voltage is present
• Under kW Inhibit Time has expired
• The total real power (kW) is less than the Under kW Trip Level for a time
period greater than the Under kW Trip Delay.
If the E300 Electronic Overload Relay trips on an under real power (kW), the:
• TRIP/WARN LED status indicator will flash a red 2-long / 1-short blink
pattern
• Bit 0 in Power Trip Status (Parameter 6) 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