PWM-Inverters Loher DYNAVERT T

Overview

General description
Technical data overview
Features
Customer benefits
Typical applications

General description

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

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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	30 - 200 kW	30 - 3900 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 phi (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 x 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

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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 EN60204-1, implemented according to EN954-1, Category 3

Power unit

This corresponds to the EMC Directives (EN61800-3 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 / EN50178

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 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

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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

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