Motor Drivers - DC Motor Driver | Maxim Integrated

Featured eBriefs. Motor Driver ICS. Featured Technical Documents. Application Note 5073, Accurate High-Side Current-Sense Amplifier Monitors PWM Load Current Tutorial 4697, Overview of Industrial Motor Control Systems …

Variable Frequency Drives (VFD's)

Variable Frequency Drives (VFD's) • Popular speed control devices used in industrial, commercial and residential applications. –Huge energy savings potential ... – At low speed, the fan on the motor produces less cooling air. • Constant torque requirements with reduced cooling air results

Powerful Performance. Flexible Control.

frequency at low speed, and others. T-Link Option Card The T-Link option card for PowerFlex 755T Drives enables high-speed drive to drive communication. High-speed drive to drive communication simplifies or eliminates logic and hardware necessary to synchronize control between drives. It could

Spindles - Haas Automation

Powerful Vector Spindle Drives – The Haas-designed vector spindle drive uses closed-loop, digital servo technology to provide precise speed control and peak performance under heavy cutting loads, resulting in the fastest, most powerful spindles ever.Our vector drives allow you to push the spindle to 150 percent of the motor's continuous power rating for 15 minutes, and to …

Mill drives: the desire for increased power and the ...

mill speed increases, initially on a straight line relations-hip and then at a diminishing rate as mill speed increases beyond a certain threshold • Constant torque capability of the motor at 1.0 per unit up to the rated mill speed (@ 74% C.S. for the 24 MW Base Case), and at 78% C.S. for the 25.3 MW Improved Base

Applications of Electric Drives | Electrical Engineering

Where the mill shaft runs at a speed too low to permit economic flywheel design, the flywheel should be mounted on the pinion shaft of the gear unit in which case the peripheral speed of the wheel can be relatively high, and the weight correspondingly less, but the gears must be large enough to transmit the peak loads to the mill.

Top 10 CNC Mills for a Small Shop | Budget-Friendly ...

Capable of high-speed machining in an enclosed capacity allows this machine to operate safely for all users. Included with this mill is a Spindle Air Blast technology which helps cool your tools to eliminate wear. One of the best CNC machine brands, Fadal always creates quality products that will last.

Cycloconverter - an overview | ScienceDirect Topics

Cycloconverter-fed synchronous motors are well suited for low-speed drives with high torque at standstill, and high-capacity gear-less cement mills (tube or ball mill above 5 MW) have been the first applications of these drives.

Energy efficiency | ABB - Drives

Using ABB's variable speed drives and high efficiency motors to intelligently run applications increases energy efficiency. This has enormous positive financial, operational and environmental implications. Sugar mill managed to reduce cane …

Medium Voltage Drives | SINAMICS Electric Drives | …

Low voltage (LV) variable frequency drives (VFDs) have been applied to applications up to 2500 horsepower (HP). Medium voltage (MV) VFDs have been applied to applications as low as 150 HP. Traditional power system design practice suggests that motor crossover from low voltage to medium voltage is in the 200-600HP range.

Large AC Adjustable Speed Motors for Metals Rolling Mills

from large torque, slow-speed roughing mills to the high-speed, wide tension range aluminum foil mills. 2. Synchronous or induction motor solutions, fed from either a voltage source inverter (such as IEGT, GCT or IGBT) or cycloconverter. TMEIC offers an optimal drive solution for each specific rolling mill application,

ELECTRICAL DRIVES & CONTROL

Unit-V Conventional and solid state speed control of AC drives Speed control of three phase induction motor-Voltage control, voltage/frequency control, slip power recovery scheme-using inverters and AC voltage regulators-applications TEXT BOOKS 1. VEDAM SUBRAMANIAM "Electric drives (concepts and applications)", Tata McGraw-Hill.2001 2.

Gearboxes | Reducers - NGC - Global expert in gearboxes ...

NGC Gears is a Business Division of Nanjing High Accurate Drive Equipment Manufacturing Group Co., Ltd. (NGC Group). NGC Gears is positioned as a global expert in gearboxes and power transmission solutions.

Series of new ABB orders from mill drives to energy ...

Once the expanded mill operations begin in 2015, production is expected to average 582,260 oz/y of gold and 29.1 Moz of silver for the next 10 years. ABB will deliver five dual pinion 2 x 9 MW low-speed mill drive systems for two 36 ft SAG and three 26 ft ball mills, and one dual pinion (2 x 5.5 MW) low-speed drive system for a regrind mill.

DESIGN BASIC OF INDUSTRIAL GEAR BOXES

An industrial gearbox is defined as a machine for the majority of drives requiring a reliable life and factor of safety, and with the pitch line velocity of the gears limited to below 25 m/s, as opposed to mass produced gearboxes designed for a specific duty and stressed to the limit, or used for very high speeds etc., e.g. automobile,

LOW SPEED ASYNCHRONOUS MOTORS FOR MILL …

LOW SPEED ASYNCHRONOUS MOTORS FOR MILL APPLICATIONS . V. Matthews, Siemens Process Industries & Drives, Alpharetta GA . INTRODUCTION Typical grinding electrification requirements are defined by high power, constant torque and slow speed. Dual pinion mills also include a need for tight tolerances in torque between the two motors, to …

Ball Mill Drives - Mineral Processing & Metallurgy

Where power exceeds this, drives become so large and motors become special, resulting in an uneconomical application. Generally the driven …

Speed Control Motors - Variable Speed Motors

Stepper Motors offer high torque and smooth low speed operation. Speed is typically controlled by manual operation on the driver or by an external switch, or with an external 0~10 VDC. Speed control systems typically utilize gearheads to increase output torque.

Advantages of low speed drive solutions - PACE

Low speed operation also avoids the mechanical problems that affect high speed mill drives. The weakest point in high speed drive solutions tends to …

Difference between AC Drives and DC Drives

High speed due to to no brush and commutation problem Advantages of AC Drives: DC drive technology is efficient, reliable, cost effective, operator friendly and relatively easy to implement as compared to DC drive systems. DC drives are less expensive and complex due to the single conversion i.e. AC to DC conversion.

Electric Motors and Drives

Speed control 152 Overall operating region 154 Armature voltage feedback and IR compensation 155 Drives without current control 155 Chopper-Fed D.C. Motor Drives 155 Performance of chopper-fed d.c. motor drives 156 Torque–speed characteristics and control arrangements 159 D.C. Servo Drives 159 Servo motors 160 Position control 162

ABB

Cold rolling mills, like tandem and sendzimir mills, are demanding higher dynamic response and accurate speed and torque control for the main and auxiliary drives. Hot rolling mills like roughers, hot strip and steckel mills require good torque control and high momentary overload capability. Cycloconverter drives delivered by ABB have proven

Most recommended VFD for Bridgeport Mills | Wolf …

The motor is a Marathon BlueMax (NVD145THTN8029ABP)(FLA 6, 230v, 5400RPM max, 1750 rpm @60hz). It is my understanding that this motor is designed specifically for vector drives. in the settings, do I set the P300 setting …