Inverters-FREQROL FR-A800 Series SYSTEM SUPPORT (ENVIRONMENT ADAPTABILITY)
SYSTEM SUPPORT
(LARGE-CAPACITY PRODUCTS)
Installation space and costs can be reduced for large-capacity systems.
Flexible configuration to meet the needs
Separate inverter and converter modules NEW
The inverter module and the converter module are physically separated for the 315K or higher capacity models.
Inverter module : FR-A842
Converter module : FR-CC2
This facilitates flexible support for a variety of systems such as common bus line (to be supported soon) and parallel operation. The fuse in the FR-A842 inverter eliminates the need of a fuse between terminals P/+ and N/-. These features allow the installation space to be minimized and costs to be reduced. The converter unit can be run with 12-phase rectifier power supply. Motors up to 1350 kW (LD rating) can be driven by the inverters with parallel operation function (FR-A842-P) and the converter units (FR-CC2-P).
Some functions from the standard inverter are limited or not available.
Some functions from the standard inverter are limited or not available.
*1When the cable length from an inverter to the node point (a/a') is less than 10 m, install the FR-POL.
Turn spare inverters into converters
Changeover between inverter and high power factor converter NEW
Install the FR-A8AVP (option) in a separated converter type inverter to use it as a high power factor converter. To use the converter, the following options are needed: phase detection transformer box, dedicated filter reactor, dedicated reactor for PWM control, dedicated filter capacitor, inrush current limit resistor, etc.
They can be switched to a converter and back to an inverter again to match process requirements.
The converter is classified as the self-excitation three-phase bridge circuit, and achieves K5 (the conversion factor) = 0. The total harmonic distortion of the input current (THDi) is 5% or less *2 , which facilitates compliance with the overseas standards related to harmonic suppression.
*2 When the input voltage is distorted, harmonic contents increase because power harmonics flow into the converter.
*3 FR-A842 inverter serving as a high power factor converter
Lower enclosure costs
Slim structure (400 V class only) NEW
Improved storage efficiency makes the enclosure downsized, which contributes to cost reduction.
Side by side installation and bus bar connection between terminals P/+ and N/- can reduce the distance between units to 20 mm for the separated converter type.
A DC reactor and an EMC filter*4 are built in the inverter. The built-in brake transistor model*5 is also available.
The wiring work of peripheral devices can be reduced and less space is required.
*4The inverter with a built-in Class C3 or C2 filter can be selected. Only Class C3 is available for the separated converter type as a built-in filter of the converter unit.
*5For the separated converter type, the built-in brake transistor model can be selected for the FR-A842M-06440(315K) or lower.
Examples of installation space reduction are shown below.
Example 1: Installation of a slim model inverter
Example 2: Installation of a slim model inverter (separated converter type)
Example 3: Installation of a slim model inverter used as a high power factor converter
* For details on "Changeover between inverter and high power factor converter", please refer to the link below.