Allen-Bradley E300 User Manual

318 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 6 Protective Trip and Warning Functions
• Bit 1 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as Warning Alarm close
Ove
rload Warning Level (Parameter 175) can be used as an alert for an
impe
nding overload trip and is adjustable from 0…100% TCU.
Table 233 - Overload Warning Level (Parameter 175)
Time to Trip
When the measured motor current exceeds the trip rating of the E300 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 234 - Overload Time to Trip (Parameter 2)
Time To Reset
After an overload trip, the E300 relay reports 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 indicates 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 Seconds

Allen-Bradley E300 Specifications

General

Type	Electronic Overload Relay
Mounting	DIN Rail or Panel Mount
Protection Class	IP20
Voltage Range	24…690 V AC/DC
Communication Options	EtherNet/IP, DeviceNet
Protection	Overload, phase loss, ground fault
Operating Temperature	-20°C to 60°C