Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2017
архивный
(4872) 700-366
skenergo@mail.ru

LOHER DYNAVERT I Current-source Inverters
LOHER DYNAVERT I Current?Source Inverters

General description

LOHER DYNAVERT I drive units are currentsource DC link inverters that are used to control induction motors. They have a fully controlled B6 bridge circuit on the line side and a B6 inverter circuit on the output side, which utilizes the principle of interphase commutation; this distributes the DC link current from the DC link reactors with a square waveform with frequency f to the motor winding. As a consequence, the motor cable length is almost unlimited.

The power flows from the line supply to the motor for a motoring load. For regenerative operation, the rectifier on the line-side feeds the regenerated energy back into the line supply. This means that from the inherent principle, 4?quadrant operation is possible without requiring any additional measures. 12- and 24?pulse versions further reduce the harmonics fed back into the line supply. For this reason LOHER DYNAVERT I is the ideal replacement for SIMOVERT A.

Features

Explosion protection

  • ATEX?certified for motors located in hazardous zones with Accessory kit S, also with very long motor cable length

Emergency Off

  • The Emergency Off function prevents unexpected starting in compliance with EN 60204?1, implemented according to EN 954?1, Category 3, respectively SIL2 with Accessory kit S

Power unit

  • 12- and 24?pulse input optional posible. For this reason gi line supply (basic fundamental) of 99.9 % is possible
  • This corresponds to the EMC Directives (EN 61800?3 environment 2) as a result of the line filter integrated as standard
  • Low harmonics fed back into the line supply as a result of the integrated line reactor
  • Long motor cable lengths possible inherent to the system
  • Insulation monitoring for IT line supplies for 500 V/690 V drive units as well as ground fault monitoring for TN and TT line supplies integrated in the 400 V drive units
  • Wide supply voltage range
  • Normal fuses can be used for protection (gL characteristic)

Control section

  • High level of personnel and plant protection through protective separation between the analog and digital control peripheral and the power unit according to VDE 0106/EN 50178

Operator control and setting

  • Transparent operator control and setting using a menu-prompted 4?line plain text display with membrane keypad at the drive inverter – or up to 1000 m away in the main control room via RS485
  • Extensive functions using the Windowsbased PC operator control program

Communication

  • Communication via a conventional terminal strip with freely?programmable digital and analog inputs/outputs, with
    • parameterizable limit value signals
    • parameterizable timers
    • parameterizable damping elements
    • parameterizable drive inverter behavior when inputs/outputs respond
  • Communication and parameterization via
    • PC using IMS (Inverter Management Software) via RS232/RS485
    • external operator panel via RS485
    • bus systems such as Profibus DP or Modbus RTU

Drive behavior for LOHER DYNAVERT I

  • Two closed?loop control types for induction motors:
    • Speed control
    • Torque control
  • Full 4?quadrant operation with regenerative braking as standard

The following generally apply

  • Automatic slip compensation
  • Stall protection using current limiting control
  • Flying restart circuit to connect to a rotating motor
















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания

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