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Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6
Protective Trip and Warning Functions
Table 186 - Jam Trip Delay (Parameter 252)
Jam Trip Level
Jam Trip Level (Parameter 253) allows you to define the current at which the
E300 Electronic Overload Relay trips on a jam. It is user-adjustable from
50…600% of the FLA Setting (Parameter 171).
Table 187 - Jam Trip Level (Parameter 253)
Jam Warning
The E300 Electronic Overload Relay indicates 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 flashes a yellow 5-short blink pattern
•
Bit 4 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 close
Default Value
5.0
Minimum Value
0.1
Maximum Value
25.0
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
10
Units
Seconds
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 minimum fla SETTING of the device. The
E300 Electronic Overload Relay does not begin monitoring for a jam condition
until the Jam Inhibit Time expires.
Summary of Contents for Allen-Bradley E300
Page 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Page 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Page 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Page 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
Page 545: ......