Rockwell Automation 193-EPRB Profibus Side Mount Module for the E1 Plus Overload Relay User Manual - Manual (Page 9)

1 Publication 193-UM010A-EN-P – January 2008
2
Protection Functions
Introduction The purpose of this chapter is to provide detailed information regarding the protective trip and
warning functions that the 193-EPRB PROFIBUS Module adds to the E1 Plus Overload Relay.
In this chapter, you will find considerable mention given to parameters as they relate to these
functions. For complete descriptions of the programming parameters, refer to Chapter 3 -
PROFIBUS Configuration.
Trip Status / Identification
The PROFIBUS Module determines trip status and identification through monitoring of
reference signals inside the E1 Plus Overload Relay. On power-up, it assumes that the E1 Plus
Overload Relay is in a non-tripped condition. For definitive feedback on trip status of the E1
Plus Overload Relay, one of the PROFIBUS module inputs may be wired to the N.O. auxiliary
contact (terminals 97 and 98) of the E1 Plus Overload Relay. Parameters 28 and 29 are used to
configure the assignment of the inputs. For this function, use the “OL Contact” configuration.
Trip Resetting The following options are available for resetting a tripped E1 Plus Overload Relay with a
PROFIBUS module:
• Blue mechanical reset button located on the front of the E1 Plus Overload Relay
• Setting Parameter 19, Trip Reset, to “Reset”
• Setting the "Trip Reset"-bit bit in the Control Register
• Using a push button (N.O. contact configuration) wired to one of the PROFIBUS
Module inputs, programming the corresponding input assignment parameter (28 or 29)
to “Trip Reset”
Trip and Warning Enable Parameter 8, Trip Enable, allows the installer to enable or disable the jam trip protective function.
Parameter 9, 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
IMPORTANT
Setting parameter 11, Reset Mode, to “Automatic” does not result in other
reset commands being ignored.
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.