Current-source Inverters Loher DYNAVERT I производства Siemens

• Chemical industry
• Power stations and utilities
• Plastic industry
• Basic materials industry
• Test stands
• Conveyor technology and applications in general machinery construction
• Retrofit for SIMOVERT A drives

• Cabinet units 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, mainly on 12- and 24-pulse versions
• Almost unlimited motor cable lengths possible inherent to the system
• High overvoltage strength, e.g. load shedding of turboset in power stations
• Wide supply voltage range
• Full 4-quadrant operation as standard
• Same user interface / software as DYNAVERT T

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 possible. For this reason g_{1line 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 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 / 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 Windows-based PC operator control program

Communication

• Communication via 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 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