Overload and phase loss protection, Overload warning – Rockwell Automation 193-ETN E1 Plus EtherNet Side Mount Module User Manual User Manual

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Rockwell Automation Publication 193-UM012B-EN-P - June 2011

Chapter 2

Parameter 13,

Warning Enable, allows the installer to enable or disable the

overload, jam, underload, and communication warning protective functions.

Overload and Phase Loss
Protection

Thermal overload and phase loss trip protection is provided exclusively by the E1
Plus Overload Relay. The E1 Plus Overload Relay provides uninterrupted
protection to the motor, even in the event of an E1 Plus EtherNet/IP Module
failure. Settings for FLA and trip class are found directly on the E1 Plus Overload
Relay.

Overload Warning

The E1 Plus EtherNet/IP Module continuously monitors the E1 Plus Overload
Relay's percentage of thermal utilization signal. Parameter 2,

%Therm Utilized,

provides this value.

Parameter 17,

OL Warn Level, is used to adjust the setpoint to alert for an

impending overload trip and is adjustable from 0…100% TCU.

The E1 Plus EtherNet/IP Module will indicate an overload warning if all the
following conditions are met:

• No warning currently exists
• Overload warning is enabled
%Therm Utilized is equal to or greater than OL Warn Level

When the overload warning conditions are satisfied, the following will occur:

• Bit 0 in Parameter 4, Warning Status, will go to “1”
• Bit 1 of Parameter 10, Device Status, will go to “1”

ATTENTION: The Trip Enable settings should not be altered during
machine operation, as unexpected behavior could occur. This may
result in an unintended actuation of controlled industrial
equipment, with the potential for machine damage or serious
injury to personnel.

IMPORTANT

The reset mode DIP switch adjustment is overridden by the E1 Plus
EtherNet/IP module parameter 16, OL Reset Mode, while the E1 Plus
EtherNet/IP module is powered.

IMPORTANT

%Therm Utilized will stabilize at a value of approximately 88% with
the motor operating continuously at rated current.

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