Product category:
Industrial Drives/Controls
News Release from: Omron Electronics | Subject: L7 Varispeed frequency inverter
Edited by the Engineeringtalk Editorial
Team on 27 January 2004
Frequncy inverter lifts the bar
With the introduction of the new L7 Varispeed frequency inverter, Omron-Yaskawa has made it easier for lift designers and manufacturers to meet today's stringent demands for safety and ride quality.
With the introduction of the new L7 Varispeed frequency inverter, Omron-Yaskawa has made it much easier for lift designers and manufacturers to meet - and even exceed - today's stringent demands for safety and ride quality Developed specifically for the lift market, L7 Varispeed drives focus firmly on reliability, ease-of-use and smooth performance
This article was originally published on Engineeringtalk on 17 Jun 2008 at 8.00am (UK)
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They are available in power ratings from 3.7 up to 55kW, and offer a cost-effective solution for almost all lift requirements.
The L7 uses the latest proven technology to provide reliability and safety.
This inverter ensures 3 million full-load starts during its lifetime.
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The D6F-P has an integrated dust segregation system that uses symmetrical centrifugal flow paths to keep particulate matter away from the flow sensor element regardless of flow direction.
Furthermore, lift-specific features have been developed in response to market needs.
These standard features include direct control of motor brake and motor contactor, short-floor operation, door-opening control and hardware base block.
In addition, both open-loop and closed-loop vector control is available in the L7, providing the optimum speed regulation to suit the application.
Ease of use has been considered from the outset, and the L7 contains all the relevant lift, function and sequence parameters.
This allows it to be easily adjusted to every controller sequence available on the market.
An LCD operator is standard, providing the user with a plain-text setup and commissioning tool.
Nonrotating auto-tuning measures all the necessary motor equivalent circuit data at startup, so there is no need to disconnect the lift motor from the system in order to acquire data prior to operation.
The PC commissioning tool, SYSDrive Configurator, ensures easy setup, and option cards are available to integrate the L7 into communication networks such as CANopen, DeviceNet or Profibus-DP.
The L7's high current rating - even at high temperatures - enables the same power rating to be chosen for inverters and motors.
Its four built-in relays provide output signals that eliminate the need for extra components in the lift controller panel, and the relays control the motor brake and contactors directly.
Safety is paramount in the L7 series.
Even in the event of a power failure, the L7 will continue to bring the lift to a correct stop using external battery power or a UPS (uninterruptible power supply).
The L7 features advanced IGBT protection, with five levels of overcurrent protection available before an overcurrent failure occurs.
A brake and contactor control/supervision circuit guarantees safe operation. Request a free brochure from Omron Electronics ...
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