Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020
15
Chapter
1
Overview of Drive
Introduction
The PowerFlex® 7000 represents the third generation of medium voltage drives at
Rockwell Automation. The PowerFlex 7000 medium voltage AC drive is part of
the PowerFlex family of AC drive products. The Allen-Bradley® PowerFlex family
of Drives incorporates leading-edge technology, embedded communications, and
significant commonality across multiple platforms, networks, operator interface
programming and hardware. Designed for end users, solution providers and
OEMs, PowerFlex 7000 liquid-cooled drives meet applications ranging from
3000...9000 horsepower (2240...6715 kW).
The PowerFlex 7000L is a general purpose stand alone medium voltage drive that
controls speed, torque, direction, starting, and stopping of standard
asynchronous or synchronous AC motors. It is intended for use on a host of
standard and specialty applications such as fans, pumps, compressors, mixers,
conveyors, kilns, fan-pumps, and test stands. Primary industries for these
applications include petrochemical, cement, mining and metals, forest products,
power generation, and water / waste water.
The PowerFlex 7000L is a global product that adheres to the most common
standards from NEC, IEC, NEMA, UL, and CSA. It is available with the world’s
most common supply voltages at medium voltage, from 2400...6600 volts.
(1)
The design focus is on high reliability, ease of use, and lower total cost of
ownership.
Liquid Cooling
The PowerFlex 7000L “C” Frame liquid-cooled drive utilizes a closed loop
system to cool the converter main power components and the integral DC link
inductor.
Benefits of Liquid Cooling Include:
•
Smaller drive dimension compared to air-cooled drives of similar rating
•
Higher power rating capability
•
Quiet operation in control room
•
Low loss rejection to the control room reduces air conditioner loading
•
Majority of losses rejected outside the control room via a liquid-to-air or
liquid-to-liquid type heat exchanger
(1) For 2400V and 3300V designs, contact factory.
