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Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6
Protective Trip and Warning Functions
Over Frequency Warn Level
Over Frequency Warn Level (Parameter 376) allows you to define the frequency
at which the E300 Electronic Overload Relay indicates a warning. It is user-
adjustable from 46…65 Hz.
Table 246 - Over Frequency Warn Level (Parameter 376)
Power-based Protection
The E300 Electronic Overload Relay can digitally monitor the power that is
supplied to an electric motor to help protect against poor power quality or alert
you when power consumed by the motor differs from what is expected. This
protection is useful for pump cavitation and pump material change detection.
The following E300 Sensing Modules provide power monitoring capabilities.
Table 247 - Power Capabilities
This power information is used for the following protective trip and warning
functions:
•
Under Real Power (kW) Trip/Warning
•
Over Real Power (kW) Trip/Warning
•
Under Reactive Power (kVAR) Trip/Warning
•
Over Reactive Power (kVAR) Trip/Warning
•
Under Apparent Power (kVA) Trip/Warning
•
Over Apparent Power (kVA) Trip/Warning
•
Under Power Factor Trip/Warning
•
Over Power Factor Trip/Warning
Default Value
62
Minimum Value
46
Maximum Value
65
Parameter Type
USINT
Size (Bytes)
1
Scaling Factor
1
Units
Hz
IMPORTANT
The Over Frequency Warning function does not include a time delay feature.
Once the Over Frequency Inhibit Time has expired, the Over Frequency Warning
indication is instantaneous.
Catalog Number
Measurement Method
L-L Voltage Trip/Warning Range
193-ESM-VIG-__-__
Internal
20…800V
592-ESM-VIG-__-__
Internal
20…800V
193-ESM-VIG-30A-CT
External
20…6500V
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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