AC Drives

AutoMax Network Communication Board

A powerful, economical method for interfacing the GV3000 to AutoMax


The AutoMax network communication board is designed to enable communication between the GV3000 A-C Drive and the AutoMax real-time Distributed Control System NETwork (DCS-NET). A GV3000 drive can be controlled, tuned, and monitored by way of this high speed (875K Baud) network link. Drive data is predefined on DCS-NET through fixed memory mapping to ensure minimal programming.

A simple ribbon cable connects the GV3000 regulator to the communication board. Because the board mounts internally to the drive, no additional cabinet space is required.

Function

DCS-NET is a master/slave control network designed for high speed coordination between multiple drive sections. Data is transmitted and received over a single coaxial cable. DCS-NET supplies the link to connect multiple AutoMax racks, personal computers, Reliance AC and DC drives and operator interface terminals to form a distributed control system. The network contains one master and up to 55 slave drops.

Features

Control

Functional control of the GV3000 AC Drive is accomplished through DCS-NET. Typical network control includes: start/stop, Fwd/Rev direction, Run/Jog mode and speed or torque reference.

Tuning

The GV3000 drive can be adaptively tuned to its current process. This can include speed loop proportional or integral gain, reference trim or draw gain, and acceleration or deceleration rates.

Monitoring

Even if a GV3000 is controlled through hardwired inputs or keypad control, monitoring of the drive is possible. Fedbacks such as speed and torque feedback, current, and fault diagnostics can be observed and trended.

Configurations

Parameter P.061 allows the user to select the network configuration for each GV3000 AC drive. Configurations are provided in two forms: Basic Drive Connection and Full Drive Connection.

Basic

Configured in the basic connection, a GV3000 will occupy a single slave drop. For high density applications, this configuration will allow up to 48 drives to be connected on a single network. Network data is comprised of commonly used parameters and diagnostic information.

Full

For network access to all parameters and operating variables, the GV3000 can be configured as a full drive connection. This connection type will occupy three slave drops, allowing up to 18 drives to be placed on a single network.

Specifications

  • M/N 2AX3000
  • 875K Baud transmission rate
  • Maximum network cable length of 3000 feet
  • Requires GV3000, Version 2.2 or later
  • Fixed memory mapping
  • Cable connection to passive tap included

GV3000 Setup

Minimum number of setup parameters to begin DCS-NET communication.

Parameter Description
P.000 Control source (LOCL, rE, PC, OP)
P.060 Drop number assignment (1-55)
P.061 Network connection type (0=Basic,1=Full)
P.062 Communication loss response (0=IET, 1=Hold, 2=Terminal)
P.063 Reference select (0=Direct, 1-8=Broadcast)

Related Documentation

  • AutoMax Network Communication Option Board - I/M D2-3308
  • Installing and Operating the GV3000 - I/M D2-3312

Related Hardware

57C380 - Communications Passive Tap
57C381 - Communications Module to
Passive Tap Cable
57C404 - AutoMax Network Communications
Module
57C445 - AutoMax PC Link Module
47C70 - Coax BNC TEE Connector
45C71 - Coax BNC 75 OHM Terminating Load


Document D-2895

Note:

This material is not intended to provide operational instructions. Appropriate Reliance Industrial Company instruction manuals and precautions should be studied prior to installation, operation, or maintenance of equipment.