Rockwell Automation 193-EDN E1Plus Overload Relays - DeviceNet Module - Manual (Page 12)

Publication 193-UM006A-EN-P – October 2005
2-2 Protection Functions
Parameter 13, Warning Enable, allows the installer to enable or disable the
overload, jam and underload 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 a DeviceNet Module failure.
Settings for FLA and trip class are found directly on the E1 Plus Overload
Relay.
Overload Warning
The DeviceNet 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 DeviceNet 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 DeviceNet module parameter 16, OL Reset Mode, while
the DeviceNet module is powered.