LOHER DYNAVERT T PWM Inverters

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  LOHER DYNAVERT T PWM Inverters

  General description

  LOHER DYNAVERT T can be flexibly integrated into any automation concept – whether using conventional control technology or bus systems.

  LOHER DYNAVERT T can be connected to any of the normally encountered line supply voltages – and can feed both synchronous and asynchronous motors. All of the drive requirements are taken into consideration from the word go – from the coupling, through the motor, cables, drive inverter, line supply situation and connection to the supervisory control system.

  Features

  Explosion protection

  • ATEX‑certified for motors located in hazardous zones
  • A main contactor is not required

  Safe Torque Off

  • The Safe Torque Off function prevents unexpected starting in compliance with EN 60204‑1, implemented according to EN 954‑1, Category 3

  Power unit

  • 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
  • Output filter to permit longer motor cables
  • Insulation monitoring for IT line supplies for 500/690 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
  • Low motor noise and low drive inverter and motor losses as a result of the optimized pulse pattern
  • 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 1,000 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 T

  • Synchronous and asynchronous motors can be controlled
  • Two closed‑loop control types for induction motors:
    • field‑oriented control for applications demanding a high dynamic performance
    • space‑vector control for standard applications (without feedback)
  • Optimum braking without supplementary equipment using super‑saturation control

  The following generally apply

  • Automatic slip compensation
  • Stall protection using current limiting control
  • Flying restart circuit to connect to a rotating motor
  • Automatic adaptation of the overload times
  • Parameterizable DC braking for precise braking down to standstill
  • Closed‑loop torque control

  Область применения

  Typical applications

  • Power stations and utilities
  • Plastic industry
  • Basic materials industry
  • Test stands
  • Conveyor technology
  • Applications in general machinery construction

  Особенности

  Customer benefits

  • Cabinet units and cabinet systems in IP21 or higher degrees of protection
  • All of the drive units have their own connection space
  • Compact dimensions
  • Equipped with radio interference suppression
  • Low harmonics fed back into the line supply
  • Long motor cables can be used as a result of the integrated dv/dt filter
  • Wide supply voltage range
  • A main contactor is not required
  • Drive units with 500 V and 690 V rated line supply voltage can be connected to non‑grounded line supplies (IT line supplies)
  • ATEX‑certified motors for hazardous zones

  Технические данные

  Technical data overview

  Rated input voltage	Typ. motor rated power compact units	Typ. motor rated power cabinet units/cabinet systems
  400 V	2.2 ... 160 kW	2.2 ... 630 kW
  500 V	2.2 ... 200 kW	2.2 ... 800 kW
  690 V	7.5 ... 200 kW	7.5 ... 6000 kW

  
  
  

  Brief overview
  Line supply voltage +10 %, -15 %	3 ~ AC 230 ... 500 V (for TN/TT line supplies) 3 ~ AC 230 ... 415 V (for TN/TT line supplies) 3 ~ AC 230 ... 500 V (for IT line supplies) 3 ~ AC 400 ... 690 V (for TN/TT/IT line supplies)
  Line supply cos φ (1)	approx. 0.99
  Line supply frequency	47 ... 63 Hz
  Maximum output frequency	120 ... 250 Hz (Setting range depends on the unit power rating)
  Output voltage (basic fundamental)	3 × 0 ... line supply voltage
  Clock frequency	1.5 ... 10 kHz, can be parameterized (Setting range depends on the unit power rating)
  Motor cable length (shielded or non-shielded)	200 ... 300 m (690 V: 100 to 300 m)
  Degree of protection: Compact drive units Cabinet units/systems	IP20 IP21, degrees of protection are optionally available