Allen-Bradley PowerFlex 7000 User Manual

166 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 3 Control Component Definition and Maintenance
2. Data Polarity: Absolute encoders typically have a High True output. If
the encoder model does not have a High/True (or Non Inverted/
Inverted) option, you should assume it to be High True. In the case of a
10bit High True encoder, the zero position is represented by
0000000000. In a Low/True encoder, the zero position is 1111111111.
On the Universal Encoder Interface, the position data is inverted in
hardware. That is, a ‘1’ will turn on an optocoupler producing a ‘0’.
Therefore, a High True encoder would produce 1111111111 for the
zero position. With the POL_QRDNT jumper, you can control the
polarity of the input. With the jumper installed (factory default), it is set
to accept High True encoders, and an extra inversion is done in the
Universal Encoder Interface. If you are using a Low True encoder, then
this jumper needs to be removed so that the zero position is inverted by
the optocouplers alone.
The other role of the POL_QRDNT jumper is to correct the data in the
event the encoder was mounted so that a CCW rotation produced
decreasing counts. If this is the case, the POL_QRDNT jumper should
be configured to the opposite of what it should normally be for the data
polarity. For example, if the Universal Encoder Interface is configured to
operate with High True encoders (POL_QRDNT installed), remove it
to correct for encoder mounting.

Allen-Bradley PowerFlex 7000 Specifications

General

Model	PowerFlex 7000
Output Voltage	0 to Input Voltage
Frequency	50/60 Hz
Voltage Rating	2.3 kV, 3.3 kV, 4.16 kV, 6.6 kV, 10 kV, 13.8 kV
Communication Protocols	EtherNet/IP, DeviceNet, ControlNet, Profibus, Modbus
Cooling Method	Air or Liquid Cooled
Enclosure	NEMA 1, NEMA 3R
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m (3300 ft) without derating
Certifications	CE

Summary

PowerFlex 7000 Medium Voltage AC Drive Air-Cooled (“B” Frame)—ForGe Control

Important User Information

General Precautions and Safety Warnings

Details ESD sensitivity, application errors, and personnel safety guidelines.

Preface

Manual Purpose and Audience

Outlines the manual's intent, intended users, and scope of coverage.

Chapter 1 PowerFlex 7000 Drive Overview

Drive Topology and Rectifier Configurations

Explains the drive's PWM-CSI topology and available rectifier designs.

Chapter 2 Power Component Definition and Maintenance

Control Power Off Tests and Interlocking

Outlines safety checks before applying control power and system interlocking mechanisms.

Voltage-Sensing Assembly and Replacement

Describes the voltage-sensing assembly and provides steps for its replacement.

Chapter 3 Control Component Definition and Maintenance

Control Power Components and Configurations

Details control power distribution for different drive configurations and ride-through capabilities.

AC/DC Power Supply Overview and Replacement

Covers AC/DC power supply functions, calibration, replacement, and diode replacement.

Appendix A Specifications

“B” Frame Drive Specifications

Lists general design specifications, including voltage, current, and enclosure details.

Appendix C Preventative Maintenance Schedule

Preventative Maintenance Overview

Categorizes maintenance into operational and annual tasks with key information requirements.

Appendix H Encoder Use and Torque Capabilities

Encoder Selection and Usage Guidelines

Provides guidance on when to use encoders and how to select them for optimal performance.

PowerFlex 7000 Drive Torque Capabilities

Details drive torque capabilities with and without encoders, and under different HPTC modes.