Allen-Bradley E300 User Manual

356 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 6 Protective Trip and Warning Functions
L3 Over Current Trip Delay
L3 Over Current Trip Delay (Parameter 282) allows you to define the time
period an L3 Over Current condition must be present before a trip occurs. It is
adjustable from 0.1…25.0 seconds.
Table 279 - L3 Over Current Trip Delay (Parameter 282)
L3 Over Current Trip Level
L3 Over Current Trip Level (Parameter 283) allows you to define the current at
which the E300 relay trips on a L3 Over Current. It is user-adjustable from
10…100% of the FLA Setting (Parameter 171).
Table 280 - L3 Over Current Trip Level (Parameter 283)
L3 Over Current Warning
The E300 relay indicates an L3 Over Current warning if:
• No warning currently exists
• L3 Over Current Warning is enabled
• Current is present
• The Over Current Inhibit Timer has expired
• L3 Percent FLA (Parameter 49) is greater than the L3 Over Current
War n
in g L e vel
Default Value 1.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Seconds
Default Value 100
Minimum Value 10
Maximum Value 100
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %FLA
IMPORTANT
The Over Current Inhibit Timer starts after the maximum phase of load current
transitions from 0 A to 30% of the minimum FLA setting of the device. The
E300 relay does not begin monitoring for an overcurrent condition until the
Over Current Inhibit Time expires.

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