Rockwell Automation SP600 User Manual Version 3.0 - Manual (Page 24)

2-10 SP600 AC Drive User Manual
2.3.14 Motor Overload Protection
The motor thermal overload function (enabled in parameter 238)
uses an inverse time (IT) algorithm to model the temperature of the
motor. This curve is modeled after a Class 10 protection thermal
overload relay that produces a theoretical trip at 600% motor
current in ten (10) seconds and continuously operates at full motor
current.
The following parameters are used to set the overload feature:
• Motor NP FLA (42)
• OL Factor (48)
• Motor OL Hertz (47)
• Fault Config 1 (238)
Refer to parameter 42 in chapter 11 for more information about this
feature.
2.3.15 . Shear Pin Fault
This feature allows you to program the drive to fault if the drive
output current exceeds the programmed current limit (see
parameter 238). As a default, exceeding the set current limit is not a
fault condition. However, if you want to stop the process in the event
of excess current, the Shear Pin feature can be activated. By
programming the drive current limit value and enabling the
electronic shear pin, the drive will fault if excess current is
demanded by the motor
2.3.16 . Drives Peripheral Interface (DPI)
SP600 drives support Drive Peripheral Interface (DPI)
communication protocols for the primary interface and drive control.
The DPI interface is an enhanced serial communications protocol
that provides high functionality and high performance.
The serial DPI connection is used for devices such as Operator
Interface Modules (OIMs), PC interface tool (VS Utilities), and
network communication modules.