VMC-3000 Motion Controller for Linear Servo Amplifiers

VMC-3000 Description

The VMC-3000 series servo motion controllers are the perfect choice for single axis control in systems requiring the ultimate in velocity stability and ultra-fast acceleration to operating speed. With our LA series Linear Servo Amplifiers driving an air-bearing spindle, velocity stability performance of 0.0006% at 7,200 rpm* (<50nS) and acceleration of less than 1 sec to 15,000 rpm is now possible!

This module can be configured to run the amplifier in torque mode using a +/-10vdc analog input and commutating from a motor mounted encoder.

As a single-axis linear servo amplifier motion controller, the VMC-3000 series can be configured to operate in a variety of modes to match just about any application. Operating modes include Position, Analog Velocity, and Analog Torque. Additionally, Digital frequency-locked Velocity and Digital Torque modes are available.

A built-in serial interface makes programming a simple task. With over 100 commands, there is enough flexibility to allow configuration and tuning for just about any application.

The design of these controllers include an on board high speed DSP which provides the PID control for the various modes. Non-volatile memory provides storage of the parameters during power-off conditions.

A generous set of inputs and outputs allows the controller to handle a variety of control schemes, eliminating the need for external I/O controllers.

VMC-3000 Features

Low jitter controller for air-bearing spindles

Frequency-locked Velocity mode
Compatible with industry standard controllers

Adjustable PID parameters

Positioning to within one encoder count

Sinusoidal commutation

Encoder start-up, no halls are required

No encoder alignment required for commutation

Non-volatile storage of all system parameters

Serial user interface for programming/monitoring

Simple, easy to use command set

Small form factor with high density connector

Generous set of optically isolated I/O’s

Field programmable for easy upgrades

Friendly built-in user interface simplifies setup

Analog Torque mode for use with other controllers

Frequency following mode (1/2 Axis)
Dual 16-bit DAC outputs

32-bit position counter

25MHz encoder bandwidth

VMC-3000 Specifications

OUTPUT CONNECTIONS
   Fault
   Zero Speed
   Ready
   At Speed¹
   User 1 Output¹
   User 2 Output¹
   User Analog output
   Dual D/A’s for amplifier commutation
   ¹Jumper selectable pull-up or open collector

INPUT CONNECTIONS
   Incremental Encoder A,B and I (Single Ended or Differential)
   Analog Command (+/- 10v) for Velocity or Torque
   Hall Sensors
   Enable
   Direction
   Reset
   Safety Interlocks (can also be used as limit +/-)
   3 General Purpose User Inputs
   ½ Axis Encoder or Clock Input for Following mode
   RS-232 Serial Interface

COMMUTATION
2-Phase Sinusoidal, +/- 10 VDC using Command A&B
Trapezoidal Start-up, Sinusoidal running

PID UPDATE RATES
   50KHz Commutation Update (Torque Loop)
   5KHz Velocity Loop Update
   500Hz Position Loop Update

INDICATORS
7 LED’s for system status and output states

JUMPER SETTINGS
   Encoder Termination Selection
   External/Local power for Opto-isolators
   Opto/non-opto isolation for Frequency input

ACCELERATION/DECELERATION PROFILES
   Linear
   S-Curve (Programmable Jerk)

POWER REQUIREMENTS
   +/- 15.0vdc, + /- 0.5 VDC, 0.1 Amps
   + 5vdc, 0.25 Amps

OPTIONS
   Break out board for 2mm 50-pin ribbon cable
   (Compatible with MFM BDC-610 and MCS LA2000)

COMMAND EXAMPLES
   RUN – Enable and run in velocity mode
   STOP – Stop motor
   ENABLE – Enable motor
   DISABLE – Disable motor
   FAULT? – Query fault status

DIMENSIONS

4.355 x 4 x 0.9 (L x W x H) inches

ENVIRONMENTAL LIMITS
   70° C Maximum Heat Sink Temperature
   -40 to 85° C Storage
   5-95% Relative Humidity. Non-condensing

PART NUMBERS
   VMC-3000: Torque mode only
   VMC-3100: Positioning/Spindle Controller

VMC-3000 Reference Manual

Motion Controller for Linear Servo Amplifiers

The VMC-3000 Linear Servo Amplifier Motion Controller Module

VMC-3000 Description