Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 152)

152 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
• TRIP/WARN LED will flash a yellow 1-long / 6-short blink pattern
• Bit 5 in Voltage Warning Status (Parameter 11) 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
Over Frequency Warn Level
Over Frequency Warn Level (Parameter 376) allows the user to define the
frequency at which the E300 Electronic Overload Relay will indicate a warning.
It is user-adjustable from 46…65 Hz.
Table 142 - Over Frequency Warn Level (Parameter 376)
Power Based Protection The E300 Electronic Overload Relay has the option to digitally monitor the
power supplied to an electric motor to protect against poor power quality or alert
users when power consumed by the motor is different 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 143 - 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 Real Power (kVAR) 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