mm4 hoisting gear

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  • Application for Drive Technology

    MICROMASTER 4 Application Description

    Conveyor Systems

    Hoisting Gear Engineering and Commissioning

  • Warranty, Liability and Support

    Conveyor Systems Hoisting Gear Engineering and Commissioning

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    1 Warranty, Liability and Support

    We do not accept any liability for the information contained in this docu-ment.

    Any claims against us based on whatever legal reason resulting form the use of the examples, information, programs, engineering and perform-ance data etc., described in this document shall be excluded. Such an ex-clusion shall not apply in the case of mandatory liability, e.g. under the German Product Liability Act (Produkthaftungsgesetz), in case of intent, gross negligence, or injury of life, body or health, guarantee for the quality of a product, fraudulent concealment of a deficiency or breach of a condi-tion which goes to the root of the contract (wesentliche Vertragspflichten). However, claims arising from a breach of a condition which goes to the root of the contract shall be limited to the foreseeable damage which is intrinsic to the contract, unless caused by intent or gross negligence or based on mandatory liability for injury of life, body or health. The above provisions does not imply a change in the burden of proof to your detriment.

    The Application Examples are not binding and do not claim to be complete regarding the circuits shown, equipping and any eventuality. They do not represent customer-specific solutions. They are only intended to provide support for typical applications. You are responsible in ensuring that the described products are correctly used.

    These Application Examples do not relieve you of the responsibility in safely and professionally using, installing, operating and servicing equip-ment. When using these Application Examples, you recognize that Sie-mens cannot be made liable for any damage/claims beyond the liability clause described above. We reserve the right to make changes to these Application Examples at any time without prior notice. If there are any de-viations between the recommendations provided in these Application Ex-amples and other Siemens publications e.g. Catalogs then the contents of the other documents have priority.

    Copyright 2005 Siemens A&D. It is not permissible to transfer or copy these Application Examples or excerpts of them without first having prior authorization from Siemens A&D in writing.

    For questions about this document please use the following e-mail-address:

    mailto:csweb@ad.siemens.de

  • Definitions and Warnings

    Conveyor Systems Hoisting Gear Engineering and Commissioning

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    2 Definitions and Warnings

    2.1 Qualified Personnel

    In the sense of this documentation qualified personnel are those who are knowledgeable and qualified to install, mount, commission, operate and service/maintain the products to be used

    e.g.:

    o Trained and authorized to energize and de-energize, ground and tag circuits and equipment according to applicable safety standards.

    o Trained or instructed according to the latest safety standards in the care and use of the appropriate safety equipment.

    o Trained in rendering first aid. There is no explicit warning information in this documentation. However, reference is made to warning information and instructions in the Operating Instructions for the particular product.

    2.2 User group

    The application software and the application example were developed to support Siemens personnel in the generation of user programs for machines or systems.

    This is not intended to be directly passed-on or sold to persons/companies outside Siemens AG.

    Application software may only be passed-on as part of a complete machine or plant software.

    If application software, which is not integrated in a complete project, is passed-on to persons/companies outside Siemens AG, then the person or persons who transferred this information carry full responsibility for any liability or damage claims.

    Only qualified personnel may apply the application software and the application example.

    If this is incorrectly used, this can result in the plant or system being destroyed and/or injury to personnel.

  • Definitions and Warnings

    Conveyor Systems Hoisting Gear Engineering and Commissioning

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    2.3 Applicable conditions

    The valid Edition for the General Conditions of Sale and Delivery for Products and Services for internal Siemens business applies.

    2.4 Information regarding trademarks

    SIMOVERT is a Siemens registered trademark MICROMASTER is a Siemens registered trademark

    2.5 Revision/Author

    Version Date/change Author 01/05 First edition M. Schmittele

    A. Bader

  • Hoisting gear

    Conveyor Systems Hoisting Gear Engineering and Commissioning

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    3 Hoisting gear

    3.1 Introduction

    These instructions are used to commission hoisting gear equipment. Please refer to the appropriate Operating Instructions and/or parameter lists if certain issues are not clear or the functionality is to be expanded. The frequency converter must be ready to operate. This means that the frequency converter must have been installed, mounted and connected-up according to the data in the Operating Instructions.

    In practice, difficulties are often encountered when using MM440 frequency converters for hoisting gear applications. Frequently, incorrect commissioning and engineering mistakes as well as unsuitable operating modes are the reasons. Generally, a hoisting gear doesnt tolerate any faults/errors.

    These Instructions are a guide for engineering and commissioning the MM440 for hoisting gear applications to allow you to quickly and reliably engineer conventional hoisting gear.

    3.2 Hoisting gear applications

    MM440 frequency converters can be especially recommended for cranes with low and average performance requirements both as hoisting gear as well as traversing gear drive. Not only this, it can be used for hoisting applications in conveyor systems. Application examples include:

    o Cranes in halls e.g. in workshops and storage facilities/warehouses: Hoisting and traversing gear equipment

    o Hoisting gear in conveyor systems with and without counter-weight o Outdoor storage locations/warehouses cranes: Hoisting and traversing

    gear

    3.3 Validity/ restrictions

    o This application document describes the closed-loop control types V/f control and closed-loop vector control with encoder and KTY 84. Closed-loop vector control with encoder and KTY 84 is the preferred operating mode.

    o It should be clearly pointed-out that at the present time, the MM440 does not reliably detect pulse encoder faults and when the motor stalls.

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    Conveyor Systems Hoisting Gear Engineering and Commissioning

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    o Presently, we do not recommend additional operating modes as mentioned in this Section for example SLVC or VC with speed encoder without KTY.

    o When using the parameter assignments recommended in Section 10.1.4 Pre-control to prevent the load dropping/sagging when entering a uni-polar speed setpoint, CDS command data sets cannot be used.

    o In this document, reference is made in the literature references to documents that are only available in the SD Intranet.

    3.4 Information and instructions when selecting/dimensioning motors and frequency converters, definitions

    3.4.1 Selecting/dimensioning motors and frequency converters using SIZER

    Here, reference should be made to the SIZER program, that also provides engineering support when selecting and dimensioning hoisting gear.

    3.4.2 Rough selection/dimensioning of motors and converters for VC with pulse encoder

    The rough selection/dimensioning described here has proven itself in practice and for most hoisting gear applications, provides good results. It assumes the following:

    The rated hoisting power Pnh at the rated velocity of the hoisting gear is calculated.

    A maximum power that has been empirically determined of Pmax = 2 Pnh is required for accelerating or a maximum torque, refer below.

    The motor is dimensioned for the rated hoisting torque Mnh, if, starting from Mnh, 200% overload is possible. Otherwise, the motor must be dimensioned corresponding to the overload or the ramp-up and ramp-down times of the hoisting velocity should be extended.

    For frequency converters up to 75 kW, 150% overload can be utilized and for frequency converters from 90 to 200 kW, 136% overload.

    We do not recommend that 200% overload is used. When the 200% overload is used, this results in a load duty cycle, that does not match the usual operating mode of cranes and hoisting gear.

    The formulas for the calculation example are shown below. The essential quantities of a hoisting gear are shown in Fig. 3.