Parker Hannifin S.p.A. - Divisione S.B.C. LVD User’s Manual
6
1 INTRODUCTION
1.1 General information
This manual describes the procedure for installing and commissioning the LVD frequency
converter for brushless motors. Read all the chapters and the revision history thoroughly
before using the equipment.
1.2 Product description
The LVD is a digital frequency converter for driving brushless motors. The adoption of a
parametric Operator Interface makes drive configuration procedures faster and more
repeatable. The large number of different configuration possibilities makes the drive suitable
for a broad range of applications.
A high power 16 bit micro-controller allows speed control with the characteristics required
of a servo controller, plus a range of auxiliary functions that can help reduce the presence of
control electronics in the application and thus permit considerable economic savings.
In addition to the positioner functions with trapezoidal profile, digital locking, spindle
orientation, stepper motor simulation, torque control and acceleration control, the LVD drive
also has an internal PLC. The drive PLC adopts the most diffused industrial programming
standards and offers considerable freedom for use of inputs and outputs. It also enables users
to develop a range of additional functions that are not among the basic features of the drive,
such as: electronic cams, adaptation of loop gains in relation to speed or space, torque
monitoring for controlling tool wear, etc..
The LVD drive is complete with an RS422/RS485 serial interface which can be used for
configuration, monitoring and simultaneous transmission of commands to a multiple system
comprising up to 32 LVD units. The drive is also compatible with standard operator panels
that support the S.B.C. protocol.
The drive is also equipped with a CanBus interface in communication mode and in real
time mode. Using the CanBus interface makes it possible to obtain a high bandwidth digital
link, t thereby simplifying system wiring requirements. With the CanBus interface LVD's I/Os
can be used as remote master I/Os.
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