VI Control Systems is a Factory Authorized Distributor for Group3
Control (previously called Group3 ControlNet).
Control Systems's Price List for Group3 Control
entire front page of product line brochure
entire back page of product line brochure
Group3 Control is a fiber optically linked control system using
distributed I/O modules called Device Interfaces, or DIs. A DI is
positioned at the point to be controlled and the appropriate I/O boards
added to it from the list below. Up to three I/O boards in any combination
can be used in each DI. Up to 16 DIs can be placed on each fiber optic
loop coming from the control computer.
DI Device Interface
Can house up to 3 I/O Boards. Contains processor board to handle
communications. Needs 12-28V, AC or DC. Small size, 112h x 76w x 140d
(units are mm).
A Analog/Digital I/O Board
Two 16 bit analog inputs, (see C board). One 14 bit analog output, (see D
board). Eight digital I/O channels.
B 24 Digitals I/O Board
24 digital channels, input and output. Outputs: open collector, 180mA,
40V. Inputs: TTL switching level 40V max.
C 8 Analog Inputs I/O Board
8 analog input channels, differential inputs, 16 bit resolution, Range:
50mV to 10V unipolar and bipolar.
D 8 Analog Outputs I/O Board
8 analog outputs of 14 bit resolution. 5V and 10V ranges. Unipolar and
E 4 DC Motor Drivers I/O Board
Drives 4 DC motors, Pulse density modulated. Independently programmable
speed and acceleration. Motors up to 30V, 1 A.
F Serial Communications I/O Board
2 independent serial ports. Fiber optic transmit/receive. Programmable
communication parameters to interface to instrumentation.
G 4 Stepper Motors I/O Board
Generates logic levels to drive 4 stepper motors. Automatic positioning,
with independently programmable accelerations and speeds. Eight limit
switch inputs. Four 8 bit analog inputs.
H 4 Encoder Channels I/O board
4 independent encoder inputs. Decodes 4 sets of quadrature pulse trains.
Increment/decrement at up to 120 kHz.
J 2 Precision Outputs I/O board
2 precision analog outputs of l6 bit resolution. 5V and 10V ranges
unipolar and bipolar.
K GPIB/IEEE488 I/O board
Controller, Talker, Listener. To interface to instrumentation and
other devices on an IEEE488 bus.
12 Channel External Timing Board
This is a custom board designed by VI Control Systems that is programmed
by interfacing to a Group3 Control B board.
8 Channel Sample & Hold and
Signal Conditioning Board
This is a custom board designed by VI Control Systems that interfaces to a
Group3 Control C board.
CNA - Single DI module ***NEW***
A rugged low-cost replacement for the existing CN1-A. It is a
combination digital and analog module offering the follwoing features:
- Two Analog Input channels: 16 bit resolution, bipolar, each
with differential inputs, +/- 10V (1 lsb = 0.3mV) and +/- 100mV (1 lsb
= 3uV) ranges.
- One Analog Output channel: 16 bit resolution, output signal
selectable as +/- 10V (1 lsb = 0.3mV) or 4 to 20 mA current
output (1 lsb = 0.2 uA).
- Eight Digital Inputs: Opto-couplers on each channel can be
selected to operate in two possible modes. In one
mode signal powered channels that are completely independent,
minimum of 5 mA. In the other mode contact closure channels share
common return potential (which is isolated from the rest of the unit
up to 1000V).
- Eight Digital Outputs: Small reed relay contacts, switching
100 volt, 500mA maximum, maximum switched power is 10 watts, isolation
of contacts from rest of unit is 500 volts.
- The CNA module has a PID algorithm embedded in it that can be
invoked to allow the module to run closed loop control. The user sends
a desired set-point to the module and the module then alters its
analog output so as to achieve the desired signal on the feedback
- The CNA module is housed in an aluminium extrusion case, size
30x90x150 millimetres. The included signal conditioning board is
mounted on the DI case itself, and provides screw terminals for all
wiring, increased transient protection on all I/O, and includes
optocouplers on digital inputs and relay contacts on the digital
Plug in cards for the control computer supporting loops of glass fiber
or plastic fiber optic cables with up to 16 DIs on each loop. If many
loops are required simply add more controller cards to the computer.
1 loop from a PC (XT Bus or PCI Bus)
3 loops from a PC (XT Bus or PCI Bus)
2 loops from VME
1 loop from STD
A new range of signal conditioners has been
developed providing increased transient protection. These are available
for type A, B, C and D I/O boards. Relay and optocoupler boards are also
available for digital channels.
Fiber optic to RS232 serial data converter.
Fiber optic repeater. Also converts from glass cable to plastic cable or
Power supply for 230V or 110V input, 20V output. DIN rail mount.
Currently supported control software packages:
InTouch by Wonderware Corporation
LabVIEW by National lnstrurnents
ControlView by Allen Bradley
Control3 by Pyramid Technical Consultants
Drivers for other software packages may be added as the market develops.
Contact VI Control Systems for further information
VI Control Systems has developed LabVIEW driver level software
for, and has extensive application experience with, all currently
available Group3 Control I/O boards. See Computer
Control and Data Acquisition Systems for more information on VI
Control Systems's software and hardware capabilities. Here is
a driver tree and some help screens from a
few individual driver VIs:
Control Demo: Click here to see a simple LabVIEW application
that uses the Group3 Control drivers.
Group3 Technology Ltd.
2 Charann Place, Auckland 7
P0 Box 71 111, Rosebank, Auckland, New Zealand
Phone +64 9 828-3358 Fax +64 9 828-3357
For further information contact Neal Pederson at
VI Control Systems Ltd., 2173 Deer Trail, Los Alamos, NM 87544
Tel: (505) 662-1461, Fax: (866) 422-2931
Designed and Created by VI Control Systems Ltd.
Copyright © 2005 All Rights Reserved.