User Manual

66 Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 3 Protective Trip & Warning Functions
• bit 10 in Trip Status, Parameter 14, will set to “1”,
• bit 0 of Device Status, Parameter 21, will set to “1”,
• Trip Relay contact will open, and
• outputs will be placed in their Protection Fault State (if so programmed).
Comm Idle Warning
The E3 Overload Relay will indicate a Comm Idle warning if:
• no warning currently exists,
• Comm Idle Warning is enabled, and
• the network controller that is communicating to the E3 Overload Relay is
• placed in idle mode.
When the Comm Idle warning conditions are satisfied, the:
• TRIP/WARN LED will flash an amber 11-blink pattern,
• bit 10 in Warning Status, Parameter 15, will set to “1”, and
• bit 1 in Device Status, Parameter 21, will set to “1”.
If a communication idle occurs and either Comm Idle Trip is not enabled or the
Pr FltState parameters are set to “Ignore”, the outputs will be placed in their
Comm Idle State.
Remote Trip
The Remote Trip function provided in series B and later devices allows the
capability of tripping the E3 Overload Relay from a remote source (e.g., a
vibration switch). Proper set-up requires that Remote Trip is enabled in Trip
Enable, Parameter 24, and that an input assignment, Parameters 83 – 86, is
configured for Remote Trip.
IMPORTANT
The Protection Fault State of OUT A and OUT B is defined by:
• OUTA Pr FltState, Parameter 65
• OUTA Pr FltValue, Parameter 66
• OUTB Pr FltState, Parameter 71
• OUTB Pr FltValue, Parameter 72
IMPORTANT
The Comm Fault State of OUT A and OUT B is defined by:
• OUTA Dn FltState, Parameter 67
• OUTA Dn FltValue, Parameter 68
• OUTB Dn FltState, Parameter 73
• OUTB Dn FltValue, Parameter 74