Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 148)

148 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Under Frequency Trip Delay
Under Frequency Trip Delay (Parameter 370) allows the installer to define the
time period an under frequency condition must be present before a trip occurs. It
is adjustable from 0.1…25.0 seconds.
Table 137 - Under Frequency Trip Delay (Parameter 370)
Under Frequency Trip Level
Under Voltage Trip Level (Parameter 371) allows the installer to define the
frequency at which the E300 Electronic Overload Relay will trip on an under
frequency. It is user-adjustable from 46…65 Hz.
IMPORTANT The Protection Fault State of Relay 0, Relay 1, Relay 2, Digital Module 1 Output
Relays, Digital Module 2 Output Relays, Digital Module 3 Output Relays, and
Digital Module 4 Output Relays are defined by the respective parameters:
• Output PT00 Protection Fault Action (Parameter 304)
• Output PT00 Protection Fault Value (Parameter 305)
• Output PT01 Protection Fault Action (Parameter 310)
• Output PT01 Protection Fault Value (Parameter 311)
• Output PT02 Protection Fault Action (Parameter 316)
• Output PT02 Protection Fault Value (Parameter 317)
• Output Digital Module 1 Protection Fault Action (Parameter 322)
• Output Digital Module 1 Protection Fault Value (Parameter 323)
• Output Digital Module 2 Protection Fault Action (Parameter 328)
• Output Digital Module 2 Protection Fault Value (Parameter 329)
• Output Digital Module 3 Protection Fault Action (Parameter 334)
• Output Digital Module 3 Protection Fault Value (Parameter 335)
• Output Digital Module 4 Protection Fault Action (Parameter 340)
• Output Digital Module 4 Protection Fault Value (Parameter 342)
Default Value 1.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Sec