User Manual User Manual

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

riod 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

ttern

• 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

otection 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