Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 119)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 119
Protective Trip and Warning Functions Chapter 5
Table 104 - L1 Over Current Trip Delay (Parameter 276)
L1 Over Current Trip Level
L1 Over Current Trip Level (Parameter 277) allows the installer to define the
current at which the E300 Electronic Overload Relay will trip on a L1 Over
Current. It is user-adjustable from 10…100% of the FLA Setting (Parameter
171).
Table 105 - L1 Over Current Trip Level (Parameter 277)
L1 Over Current Warning
The E300 Electronic Overload Relay will indicate 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
Warning Level
When the L1 Over Current Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 11-short blink pattern
• Bit 10 in Current Warning Status (Parameter 10) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
Default Value 1.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Sec
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 0A to 30% of the device’s minimum FLA setting. The E300
Electronic Overload Relay does not begin monitoring for an over current
condition until the Over Current Inhibit Time expires.