Rockwell-automation 592- E300 Overload Relay User Manual Manual de usuario Pagina 199

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Rockwell Automation Publication 193-UM015B-EN-P - June 2014 199
Protective Trip and Warning Functions Chapter 5
Any relay outputs configured as a Control Relay will open
Any relay outputs configured as a Trip Alarm will close
Any relay outputs configured as a Normal Relay will be placed in their
Pr
otection Fault state (if so programmed)
Start Inhibit Protection
This protective function allows the user to limit the number of starts in a given
time period and limit the operating hours for an electric motor. A start is defined
as the E300 Electronic Overload Relay Overload Relay sensing a transition in
current from 0A to 30% of the device’s minimum FLA rating. The Blocked Start
protective function is set by Starts Per Hour (Parameter 205) and/or Starts
Interval (Parameter 206).
Blocked Start Trip
The E300 Electronic Overload Relay will trip with a blocked start trip indication
if:
No trip currently exists
Blocked Start Trip is enabled
The number of starts within the past hour equals the value set in Starts Per
H
o
ur (Parameter 205)
The t
ime between starts is less than the value set in Starts Interval
(Paramet
er 206)
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)
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