Overview - Delta Computer Systems VMC 186/40 Manual

VMC 186/40 Motion Control Module

Overview

The VMC 186/40 motion controller module was designed to provide a complete four axis position control sub-
system for the VME bus. Each axis is controlled by an on-board processor that provides a complete PID loop
in addition to numerous special functions. Coordinated moves and position changes can be made on-the-fly.
With various options, it is possible to control position using either quadrature encoders, analog slide
potentiometers or magnetostrictive transducers. In its standard configuration, the module provides four
optically isolated magnetostrictive interfaces and four optically isolated ±100 mA ( ±10 volts with resistors
installed) outputs which can be used to drive electric servo motors and hydraulic servo valves.
The VMC 186/40 occupies one slot (two slots if options installed) of the VME rack. Programming of the VMC
186/40 is done using memory reads and writes. The on-board 80186 processor relieves the VME Controller of
the overhead usually associated with servo control. The motion controller module updates the actual position
and drive output every millisecond, assuring accurate positioning even at high speeds.
If more than four axis of control are required, additional VMC 186/40 modules can be installed.
Linear Transducers
Analog Inputs (4)
Quadrature Inputs (4)
Serial Communications
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VMC 186/40 Block Diagram
External
Power
Supplies
Isolated
Sensor
Inputs
Recirculation
& 16 Bit Counter
Logic
VMC 186/40
ASBX Analog Board
QSBX Quadrature Board
SBX 351 RS-232 Board
Additional Configurations (one only)
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4
Isolated
Drive
Outputs
80186 CPU
512 Byte
& Control
Dual Port
Logic
Memory
VME
Interface
VME BUS
Overview
+ - 100 mA
or
+ - 10 volts