Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 100)

100 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 82 - Jam Trip Delay (Parameter 252)
Jam Trip Level
Jam Trip Level (Parameter 253) allows the installer to define the current at which
the E300 Electronic Overload Relay will trip on a jam. It is user-adjustable from
50…600% of the FLA Setting (Parameter 171).
Table 83 - Jam Trip Level (Parameter 253)
Jam Warning
The E300 Electronic Overload Relay will indicate a Jam warning if:
• No warning currently exists
• Jam Warning is enabled
• Current is present
• Jam Inhibit Time has expired
• The maximum phase current is equal to or greater than the Jam Warning
Level
When the Jam Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 5-short blink pattern
• Bit 4 in Current Warning Status (Parameter 10) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
Default Value 5.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Sec
Default Value 250
Minimum Value 50
Maximum Value 600
Parameter Type UINT
Size (Bytes) 2
Scaling Factor 1
Units %FLA
IMPORTANT The Jam Inhibitor timer starts after the maximum phase of load current
transitions from 0 A to 30% of the device’s minimum FLA setting. The E300
Electronic Overload Relay does not begin monitoring for a jam condition until
the Jam Inhibit Time expires.