Rockwell Automation Publication 193-UM015E-EN-P - October 2015 351
Protective Trip and Warning Functions Chapter 6
Table 273 - L1 Over Current Trip Delay (Parameter 276)
L1 Over Current Trip Level
L1 Over Current Trip Level (Parameter 277) allows you to define the current at
which the E300 relay trips on a L1 Over Current. It is user-adjustable from
10…100% of the FLA Setting (Parameter 171).
Table 274 - L1 Over Current Trip Level (Parameter 277)
L1 Over Current Warning
The E300 relay indicates an L1 Over Current warning if:
• No warning currently exists
• 1 Over Current Warning is enabled
• Current is present
• The Over Current Inhibit Timer has expired
• 1 Percent FLA (Parameter 47) is greater than the L1 Over Current
Wa
rn
in g L e vel
When the L1 Over Current Warning conditions are satisfied, the:
• TRIP/WARN LED flashes a yellow 11-short blink pattern
• Bit 10 in Current Warning Status (Parameter 10) sets to 1
• Bit 1 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as a Warning Alarm closes
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
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.
To Next Page
Loading...
