Rockwell Automation Publication 193-UM015D-EN-P - February 2015
137
Protective Trip and Warning Functions
Chapter 6
Overload Reset Level (Parameter 174) is adjustable from 1 to 100% TCU. The
following figures illustrate the typical overload reset time delay when Overload
Reset Level is set to 75% TCU.
Figure 47 - Overload Reset Times
Overload Warning
The E300 Electronic Overload Relay indicates an overload warning if:
•
No warning currently exists
•
Overload warning is enabled
•
Current is present
•
% Thermal Capacity Utilized is equal to or greater than Overload Warning
Level
When the overload warning conditions are satisfied, the:
•
TRIP/WARN LED status indicator flashes a yellow short-1 blink pattern
•
Bit 0 in Current Warning Status (Parameter 10) sets to 1
ATTENTION:
In explosive environment applications, Overload Reset Mode
(Parameter 173) must be set to Manual.
ATTENTION:
In an explosive environment application Overload Reset Level
(Parameter 174) must be set as low as possible or in accordance with the motor
thermal time constant.
Time to Reset in Seconds
OL Reset Level (% TCU)
0
100
200 300
400
500
100
90
80
70
60
50
100
90
80
70
60
50
40
30
20
10
0
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
OL Reset Level (% TCU)
Time to Reset in Seconds
Trip Class 5
Trip Class 10 Trip Class 20 Trip Class 30
Содержание Allen-Bradley E300
Страница 1: ...E300 Electronic Overload Relay Bul 193 592 User Manual...
Страница 124: ...124 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 4 System Operation and Configuration Notes...
Страница 128: ...128 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 5 Operating Modes...
Страница 292: ...292 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 6 Protective Trip and Warning Functions...
Страница 304: ...304 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 7 Commands Notes...
Страница 372: ...372 Rockwell Automation Publication 193 UM015D EN P February 2015 Chapter 8 Metering and Diagnostics...
Страница 460: ...460 Rockwell Automation Publication 193 UM015D EN P February 2015 Appendix A Specifications Notes...
Страница 501: ...Rockwell Automation Publication 193 UM015D EN P February 2015 501 Parameter List AppendixB Notes...
Страница 502: ...502 Rockwell Automation Publication193 UM015D EN P November 2013 Appendix B Parameter List...
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