Product category:
CNC and Motion Controllers
News Release from: Lenze | Subject: Drive PLC
Edited by the Engineeringtalk Editorial
Team on 10 October 2005
PLC is made for inverter control
Lenze developed its Drive PLC, a powerful and freely programmable module, as the optimum solution to provide PLC control in inverter systems.
Lenze developed its Drive PLC, a powerful and freely programmable module, as the optimum solution to provide PLC control in inverter systems The key benefits of the Drive PLC are its high functionality due to the programming software available, quick configuration and its low cost in comparison to conventional PLC solutions
This article was originally published on Engineeringtalk on 28 Jun 2000 at 8.00am (UK)
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PLC specifically controls inverter drives
Lenze's new Drive PLC is designed to be a PLC that specifically controls inverter drives, and offers advantages such as the built-in CAN system bus and IEC1131-3 programming
Dedicated PLC works together with drive
Lenze's new Drive PLC is the ideal control unit for smaller machines - it is designed to work with an inverter and a number of basic functions are built in for Drive PLC/inverter communication.
Lenze has been offering integrated PLC control for servo inverters for some time, but to extend this facility the Drive PLC has been introduced as free standing module version for frequency inverters.
Its main purpose is to control machine motion but it is also capable of performing perform central control tasks.
The new Drive PLC is specifically designed to work inverter system and a number of basic functions are built-in for Drive PLC/inverter communication.
The basic characteristics of a small PLC are also inherent in the new Drive PLC, such as scalable inputs and outputs and fieldbus communication.
The Drive PLC has 512 inputs and outputs, analogue +/-10V inputs as well as for incremental encoders to monitor the motor position.
The Drive PLC communicates with the inverter via CANbus and uses a CAN interface for communication, removing the need for complex wiring.
The advantages being that there is no need for parallel wiring and no unused terminals.
Overall the result is a very fast signal processing and direct access to signals from the inverter.
The interfaces and libraries for communications with the drive are already fitted as standard, and the programming of the system takes place using the familiar PLC languages described by the international standard IEC61131-3.
The Drive PLC is compact and economical, but without sacrificing performance.
With a program memory of 191Kbyte and a processing time for 1bit operation of 1.0us, control of highly dynamic processes is possible.
One typical application is tension control, processing signals of dancer position and roll diameter.
Working alongside an inverter such as the Lenze 8200 vector, this makes a low cost and compact solution.
Groups of inverters can be controlled by a Drive PLC such as might be found in automated material transport with either motorised conveyor units or overhead monorail systems.
Although communication within the group is by CAN system bus, the Drive PLC offers a choice of plug-in modules for higher communication, including Profibus, DeviceNet and LON. Request a free brochure from Lenze ...
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