Lenze's new servo for multi-axis applications
20 April 2012
Lenze's new i700 servo inverters deliver highly dynamic performance for multi-axis applications in the power range from 0.75 to 15kW. Designed for machines with central control, for example palletisers, wrapping, robots and assembly machinery, the i700 provides the option of a double drive that provides control of two servo axes from a single module, savnig cost, panel space and installation time.
A typical i700 servo installation consists of a power supply module bookshelf-mounted with a number of single or double axis drives. Installation and handling is made particularly easy with keyhole mounting and fully pluggable connections. Connection between the modules is via a dc bus and hinged linking arms are easily set without the need for cables. Sharing the supply through the dc bus can achieve energy savings of up to 40% by re-using the energy from axes that are braking loads.
The standard specification of the i700 servo inverter includes real-time EtherCAT high speed bus communications. Also integrated is RFI filtering, a brake chopper and 24V electromagnetic motor brake. With a supply voltage range of 180-528V and capacity for TN, TT and IT networks, the drives are ready for use worldwide. The can be connected to synchronous servo motors and also standard asynchronous motors allowing reduced costs where highest levels of performance are not needed. Feedback can be by resolver, incremental or absolute encoder.
i700 drives have 32-bit resolution on all set-points and actual values. Cycle times for speed control are 125µs. It is possible to combine the high performance with a simple control system using the Lenze 3200C controller for PLC, motion and visualisation, together with the System 1000 high speed I/O. On the output side a full range of servo and standard asynchronous motors plus gearboxes is available.
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