Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 86)

86 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as Warning Alarm will close
Overload Warning Level (Parameter 175) can be used as an alert for an
impending overload trip and is adjustable from 0…100% TCU.
Table 64 - Overload Warning Level (Parameter 175)
Time to Trip
When the measured motor current exceeds the trip rating of the E300 Electronic
Overload Relay, Overload Time to Trip (Parameter 2) indicates the estimated
time remaining before an overload trip occurs. When the measured current is
below the trip rating, the Overload Time to Trip value is reported as 9,999
seconds.
Table 65 - Overload Time to Trip (Parameter 2)
Time To Reset
After an overload trip, the E300 Electronic Overload Relay will report the time
remaining until the device can be reset through Overload Time to Reset
(Parameter 3). When the % Thermal Capacity Utilized value falls to or below the
Overload Reset Level (Parameter 174), the Overload Time to Reset value will
indicate zero until the overload trip is reset. After an overload trip is reset, the
Overload Time to Reset value is reported as 0 seconds.
Overload Warning Level (Parameter 175)
Default Value 85
Minimum Value 0
Maximum Value 100
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %TCU
Overload Time to Trip (Parameter 2)
Default Value 9999
Minimum Value 0
Maximum Value 9999
Parameter Type UINT
Size (Bytes) 2
Scaling Factor 1
Units Sec