Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 197)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 197
Protective Trip and Warning Functions Chapter 5
Operator Station Trip
The E300 Electronic Overload Relay provides the capability to plug and play its
optional operator stations. The operator station protection feature trips the E300
Electronic Overload Relay when the user presses the red O (stop) button. This
feature is a failsafe mechanism to allow users to de-energize a contactor coil
anytime the red O (stop) button is pressed.
Operator Station Trip should be disabled when an operator station is being used
to send start and stop signals to an automation control system.
The E300 Electronic Overload Relay will trip with an operator station trip
indication if:
• No trip currently exists
• Operator Station Trip is enabled
• The user presses the red O button on an operator station
If the E300 Electronic Overload Relay trips on an operator station trip, the
following will occur:
• The TRIP/WARN LED will flash a red 3-long / 4-short blink pattern
• Bit 3 in Control Trip Status (Parameter 7) will set to 1
• Bit 0 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Trip Relay will open
• Any relay outputs configured as a Control Relay will 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)