Allen-Bradley PowerFlex 70 Enhanced Control User Manual

36 Direction Control
4. Controlled by the Network
This configuration is used when it is desired to control the digital outputs over
network communications instead of a drive related function. In this case,
[Digital Out x Sel] is set to “Param Cntl,” in which case the bit value of [DigOut
Setpt], parameter 379 energizes the respective digital output. Bit 0 corresponds
to output 1. Bit 1 corresponds to output 2, and so on. To complete the
configuration for control over a network, a datalink must be established with
[Digital Out Setpt], parameter 379.
Example
Digital Output 2 controlled by Data In B1.
Setup
− [Data In B1], parameter 302 = 379 ([Dig Out Setpt] as the Data In target)
− [Digital Out2 Sel], parameter 384 = 30 “Param Cntl”
When Bit 1 of Data In B1 =1 Digital Out 2 will be energized.
Direction Control Direction control of the drive is an exclusive ownership function. Only one device
can command direction at a time. Direction is defined as the forward (+) or reverse
(–) control of the drive output frequency, not motor rotation
. Motor wiring and
phasing determines its CW or CCW rotation. Direction of the drive is controlled in
one of four ways:
1. 2-Wire digital input selection such as Run Forward or Run Reverse.
2. 3-Wire digital input selection such as Forward/Reverse, Forward or Reverse.
3. Control Word bit manipulation from a DPI device such as a communications
interface. Bits 4 & 5 control direction. Refer to the Logic Command Word
information in Appendix A of the PowerFlex 70 or 700 User Manual.
4. The sign (+/-) of a reference signal, such as a bipolar analog input or the 16th bit
of a network reference.
Direction commands by various devices can be controlled using the [Direction
Mask]. See page 49
for details on masks.
Refer to "Digital Inputs" on page 26
and "Analog Inputs" on page 4 for more detail
on the configuration and operating rules for direction control.
70EC
700VC
700H
✔✔

Allen-Bradley PowerFlex 70 Enhanced Control Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 70 Enhanced Control
Category	DC Drives
Language	English

Summary

Important User Information

Preface

Overview

Provides general information about the manual's scope and conventions.

Reference Information

General Precautions

Highlights essential precautions for safe installation, operation, and maintenance.

Detailed Drive Operation

Explains drive functions, organized alphabetically by topic.

Analog Inputs

Details possible uses and scaling configurations for analog inputs.

Manual Conventions

Explains symbols and text conventions used throughout the manual.

Accel/Decel Time

Sets the rate at which the drive ramps output frequency after start/stop.

Analog Outputs

Describes analog output configurations, scaling, and examples.

Auto/Manual

Explains the function for temporary override of speed and start/stop control.

Auto Restart

Describes the drive's ability to automatically reset faults and restart.

Autotune

Details parameters determined by autotune tests for motor identification.

Bus Regulation

Explains how the drive regulates excess voltage on the DC bus.

Current Limit

Describes methods the drive uses to protect against overcurrent situations.

Digital Inputs

Details the configuration and function of digital inputs.

Digital Outputs

Describes programming digital outputs based on various drive conditions.

Direction Control

Explains how drive direction is controlled via various inputs and methods.

Drive Overload

Details the drive's overload function with inverse time and thermal manager.

Faults

Details conditions causing faults, fault queue, and clearing procedures.

Flying Start

Details the feature for starting into a rotating motor, resuming normal operation.

Motor Control Modes

Selects drive output mode: V/Hz, Sensorless Vector, Flux Vector, etc.

Motor Overload

Details the drive's overload function with inverse time and thermal manager.

Notch Filter

Reduces mechanical resonance in the torque reference loop.

Position Indexer/Speed Profiler

Configures the drive as a velocity or position regulator with programmable steps.

Speed Reference

Selects the speed reference source from digital inputs or network commands.

Speed Regulation

Adjusts output frequency to compensate for load changes and maintain speed.

Stop Modes

Describes various methods for braking or stopping a load with the drive.

User Display

Allows programming the display to show pertinent information when keys are inactive.

Voltage Class

Identifies the general input voltage range to the drive.

Voltage Tolerance

Defines the acceptable input voltage ranges for drive operation.

Appendix

Supplemental Information

Provides additional technical details and parameter explanations.

Engineering Parameters

Lists and describes parameters related to motor control and utility functions.