Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 184)

184 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Under Power Factor Lagging Trip Level
Under Power Factor Lagging Trip Level (Parameter 412) allows the installer to
define the power factor lagging at which the E300 Electronic Overload Relay will
trip on an under power factor lagging. It is user-adjustable from
0…2,000,000 kW.
Table 185 - Under Power Factor Lagging Trip Level (Parameter 412)
Under Power Factor Lagging Warning
The E300 Electronic Overload Relay will indicate an Under Power Factor
Lagging warning if:
• No warning currently exists
• Under Power Factor Lagging Warning is enabled
• Current is present
• Voltage is present
• Under Power Factor Lagging Inhibit Time has expired
• The total power factor lagging is equal to or less than the Under Power
Factor Lagging Warning Level
When the Under Power Factor Lagging Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 2-long / 9-short blink pattern
• Bit 8 in Power Warning Status (Parameter 12) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
Under Power Factor Lagging Warn Level
Under Power Factor Lagging Warn Level (Parameter 413) allows the user to
define the power factor lagging at which the E300 Electronic Overload Relay will
indicate a warning. It is user-adjustable from 0…2,000,000 kW.
Default Value -90
Minimum Value -100
Maximum Value 0
Parameter Type SINT
Size (Bytes) 1
Scaling Factor 1
Units %
IMPORTANT The Under Power Factor Lagging Inhibit Time starts after a phase voltage
transitions from 0V to 20V L-L and a phase of load current transitions from 0A
to 30% of the device’s minimum FLA setting. The E300 Electronic Overload
Relay does not begin monitoring for an under power factor lagging condition
until the Under Power Factor Lagging Inhibit Time expires.