Crusher and Grinding Mills

  • Plant Engineering Drive/Motor Load Sharing: Match

    Both ac and dc drive systems are capable of load sharing, but they each employ very different control strategies. An older method. In the past, a common method for achieving load sharing on conveyor systems was to take advantage of the forgiveness inherent in eddy current drives.

  • Load Sharing Applications for AC Drives

    Multiple motors that are run from a single drive is not load sharing because torque control of individual motors is not Continuous belt conveyor with multiple driven rolls. In both examples, the speed regulation is not critical. Load Sharing Applications for AC Drives. In these examples, the coupling between motors has a very

  • Motion Control: How Do We Synchronize Motor Speeds?

    Sep 15, 2002· We use DC motors in our load-sharing conveyor installations. The motors are connected in parallel to a DC drive and split the output current equally so they run at the same speed. We have a customer specification to do this with AC motors instead. It appears we'll have to use a variable frequency

  • Improving Conveyor Performance With AC Drives Agg-Net

    Further benefits are possible when using a drive with the direct torque control (DTC) motor control platform, available with ABB industrial drives. For example, load sharing can be arranged between motors on the conveyor. An equal load ensures that the motors do not overheat and trip out, thereby disrupting the transport of material.

  • What is droop control in the context of AC motors and drives?

    Apr 17, 2019· Droop control is often used to increase slip in an overloaded motor, allowing other motors connected to the same load to take a higher share of the load. One application where droop control is useful is a conveyor with multiple driven rolls. If one section of the conveyor (and, therefore, one motor) sees an increase in load, droop control

  • 1030678 PowerFlex AC Drives Applications Tech Note

    1030678 PowerFlex AC Drives Applications Tech Note Access Level: Everyone Question. Exclusive PID Control. Drive does not support. Drive does not support : Winder, Unwinder. Chain Conveyor. Load Sharing Speed around Torque around Speed. Drive does not support: Drive does not support

  • How to control a 4 AC motor drived Chain conveyor

    Oct 26, 2011· Hello All! I am involved in a retrofit of a long overhead chain conveyor (aprox. 1,5 miles) to replace 4 old and problematic DC motors connected in a...

  • Need help driving a chain conveyor w/ 2 motorsJul 11, 2001How do I control a chain conveyor with 3 dc drives withoutFeb 27, 2001Conveyor load sharing using AC drive See more results
  • Drives for conveyors in mining Danfoss

    Apply drives to ensure load sharing between each motor for reliable operation and to maximize belt life. Danfoss drives include both Master-Master and Master-Follower control solutions for this. Selection of the control solution depends on the configuration of the conveyor drives on the conveyor.

  • Electric Solution Load Sharing (Part 1/2

    Jul 20, 2010· A Load Sharing application is one where there are 2 or more motors mechanically connected to drive the same load. A good example of this is when controlling a long conveyor belt. In theory, if

  • How to control a 4 AC motor drived Chain conveyor

    Oct 26, 2011· Hello All! I am involved in a retrofit of a long overhead chain conveyor (aprox. 1,5 miles) to replace 4 old and problematic DC motors connected in a...

  • 549193 PowerFlex 523/525 drive: Load Sharing and Droop

    Yes, the PowerFlex 525 drive does have a way to load share between multiple drives using a Droop feature, while the PowerFlex 523 drive does not have a way to perform load sharing using a Droop feature. In the PowerFlex 525 drive the Droop feature can be enabled by setting Parameter A441 [Droop [email protected] FLA] as shown below. Load Sharing

  • Improving Conveyor Performance With AC Drives Agg-Net

    Further benefits are possible when using a drive with the direct torque control (DTC) motor control platform, available with ABB industrial drives. For example, load sharing can be arranged between motors on the conveyor. An equal load ensures that the motors do not overheat and trip out, thereby disrupting the transport of material.

  • Dynamic Load Sharing For Conveyor Belts With Multiple

    Dynamic Load Sharing For Conveyor Belts With Multiple Drive Stations Abstract: The characteristics and limitations of multiple drive station belt conveyors are explored and computational method is presented as a means of providing drive coordination which can skirt some of the limitations.

  • Variable Frequency Drives for conveyor starting

    Variable Frequency Drives for conveyor starting By K Moss, Zest WEG Group. multiple motors on the same conveyor. Generally this load sharing system works as follows: relatively flexibly, such as conveyors, a method of VFD load shar-ing using droop control has

  • CONVEYORS Design fundamentals for drive systems on

    • Not allowing for load sharing in mul-tiple drive systems • Not allowing for surge (transient but sustained variations in throughput) • Procured drive and conveyor compo nents being different to the design components resulting in different resist ances and different drive characteristics Correct conveyor drive design can be

  • A Modified Torque Control Approach for Load Sharing

    proportional load sharing using of the torque control drives seems to be necessary, but these drives are complicated and expensive. This paper describes a torque control approach for coupled IMs V/F drives which is accurate and inexpensive and also uses minimum number of motor parameters.

  • Load sharing between motors Electric motors & generators

    Aug 19, 2008· With ac motors, where they share inverters, the worry was that differing wheel diameters would cause poor load sharing but I think experience has shown that the problem wasn't that serious, even that it may be self-correcting. The easy way to assess load-sharing, as has already been stated above, is to compare the motor currents.

  • Need help driving a chain conveyor w/ 2 motors control

    Jul 11, 2001· Hi all, I have a problem here that I could use a little help with. I have a overhead monorail chain conveyor project that I am working on. I am...

  • CONVEYORS, SCRAPERS, ANCILLARIES Cutting edge, energy

    load sharing between multiple drives, controlled stops and de-pending on the topology regeneration. Furthermore, the me- at belt conveyors and the modernisation of drives and control systems at belt conveyors can result in additional energy savings of about 10 % and 20 %, respectively. to standard AC drives as the drive’s flux

  • Intelligent CST Drive Systems Adobe

    of fully loaded conveyors Load-sharing Power consumption of each motor is constantly monitored to allow load-sharing between the individual drives. If a preset value is exceeded, slip at the drive with the greater power consumption is increased, causing the other drives to draw more power and equalizing power distribution again.

  • How do I control a chain conveyor with 3 dc drives without

    Feb 27, 2001· Hi, I have a system with 3 dc motors 1 connected at each end of a conveyor and one in the middle. The conveyor has a chain inside a track to drive the...

  • (PDF) Speed Controlled Belt Conveyors: Drives and

    the load sharing between drives stopping with a predefined ac Belt conveyors can be partially loaded due to the variation of bulk material flow loaded onto the conveyor. Speed control

  • MCCP Mining Conveyor Control Program ABB Gearless

    The software is specifically configured for conveyor applications, allowing for setting (by parameter) of the essential conveyor drives control functions: start/stop control, acceleration and deceleration profiles, load sharing between motors and pulleys, mechanical brake control, drive monitoring, alarm processing, speed and torque limitations.

  • System Competence for Belt Conveyor Drives

    at almost no load with a drained coupling. Fill control couplings also allow the conveyor to be accelerated precisely to follow a programmed "S-shaped" speed-time ramp. These Type TPKL units limit the maximum accelera-tion forces and provide acti ve load sharing, tension control for booster drives, and controlled deceleration.

  • What is the difference between Variable Torque and

    Explanation of the difference between Variable Torque and Constant Torque for AC Drive ratings Product Line: All Altivar ATV drives. Typical applications are: Traction drives, Compressors, Conveyors, Positive displacement pumps, Mixers and Hoists. As the speed changes, the load torque remains constant and the horsepower changes linearly

  • PowerFlex Drives for Crane and Hoist Applications

    PowerFlex Drives for Crane and Hoist Applications Premier Integration Premier Integration is the exclusive experience of integrating Allen-Bradley motor control devices into the Allen-Bradley Logix control platform. Use just one software tool to help reduce your programming time, ease startup and commissioning and streamline diagnostics.

  • A Modified Torque Control Approach for Load Sharing

    proportional load sharing using of the torque control drives seems to be necessary, but these drives are complicated and expensive. This paper describes a torque control approach for coupled IMs V/F drives which is accurate and inexpensive and also uses minimum number of motor parameters.

  • Application Note Load sharing

    Load sharing using Motor slip If two motors are soft-coupled and controlled by one drive, “natural” load sharing can be achieved by disabling slip compensation. Operating principle The principle is that as one motor is loaded, the slip increases causing it to slow down, which causes the second motor to load

  • CST65 CST Drive System Cat Work Tools Wagner Equipment

    CST65 CST Drive System It allows changes to drive system parameters and monitors load-sharing, conveyor speed, clutch sensors, etc. -tested CST drive system for face conveyors with a newly developed special Baldor Electric motor with our new PMC™-D drive control system.

  • Practical Implementation of Load Sharing and Anti Skew

    There are three categories of load sharing techniques: common speed reference, torque follower and speed trim follower. The common speed reference is the simplest the least precise and the less flexible form of load sharing to set up, Fig. 2. The precision of this control depends on the drives control algorithm, the motor characteristics and

  • Applying Adjustable Speed Drives to Conveyors

    If several motors are located at various places along the conveyor, the power is transmitted electrically to locations closer to the points of use. There are various methods for designing a multiple motor conveyor drive system so that the load will be evenly shared among the motors. Load sharing systems will be the subject of a future article.