Allen-Bradley E300 User Manual

Rockwell Automation Publication 193-UM015E-EN-P - October 2015 433
Protective Trip and Warning Functions Chapter 6
Start Inhibit Protection
This protective function allows you 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 relay sensing a transition in current from 0 A to 30% of the minimum
FLA rating of the device. The Blocked Start protective function is set by Starts
Per Hour (Parameter 205) and/or Starts Interval (Parameter 206).
Blocked Start Trip
The E300 relay trips with a blocked start trip indication if:
• No trip currently exists
• Blocked Start Trip is enabled
• The nu
mber of starts within the past hour equals the value set in Starts Per
Hou
r (Parameter 205)
• The t
ime between starts is less than the value set in Starts Interval
(Paramete
r 206)
If the E300 relay trips on a blocked start trip, the following occurs:
• The TRIP/WARN LED flashes a red 3-long / 6-short blink pattern
• Bit 5 in
Control Trip Status (Parameter 7) sets to 1
• Bit 0 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as a Trip Relay open
• Any relay outputs configured as a Control Relay open
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)

Allen-Bradley E300 Specifications

General

Type	Electronic Overload Relay
Mounting	DIN Rail or Panel Mount
Protection Class	IP20
Voltage Range	24…690 V AC/DC
Communication Options	EtherNet/IP, DeviceNet
Protection	Overload, phase loss, ground fault
Operating Temperature	-20°C to 60°C