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New servo drive is easy to apply Lenze i700 servo for multi-axis applications

New servo drive is easy to apply Lenze i700 servo for multi-axis applications Launched in the UK at the 2012 Drives & Controls exhibition is the new Lenze i700 servo drive. Intended for multi-axis applications, the i700 makes the tasks of design, build and commissioning easier whilst delivering highest levels of performance. Thanks to intuitive software tools and a central engineering interface, the i700 can be integrated easily into automation architectures through EtherCAT. Together with the Lenze Controller 3200 C, it constitutes the heart of the Lenze Controller-based Automation System for machines with central motion control. The i700 can be considered as a "dumb" drive that executes messages from a central controller holding the motion programs.

In the first release, the new servo inverter from Lenze comprises single-axis and double-axis modules for the power range from 0.37 up to 15 kW, along with appropriate power supply modules. Easy wiring using plug connectors is an advantage. The power supply modules do not usually require any filtering or DC fusing, and are factory-fitted with a braking chopper. The intermediate electrical connections between the i700 drives are made without a cable, using an innovative rail system, and are easily installed by setting connector arms.

Creation of a system with Lenze Controller-based Automation becomes simple and efficient using EtherCAT connections between the i700 servo drives and 8400 inverter drives if required. The EtherCat bus connects to the 3200 C controller which handles PLC logic, the motion paths and visualisation. Remote I/O stations can be added. These automation components have EtherCAT as standard and can be set up with a single software tool. All that is then needed is a low cost fieldbus connection back to the supervisory level. The end result is fewer components, simpler connections and reduced costs.

The reduced space requirement, lower number of components, easier assembly and cabling of the i700 offer the machine builder a significant boost to productivity. The easy engineering of the system makes a further contribution. The i700 was designed for engineering using only one interface. Automatic download of parameters and firmware, along with auto-tuning functions, ensure fast commissioning and further simplify the engineering.

The i700 supports the full spectrum of motor technologies, from standard 3-phase up to synchronous servomotors. With extremely short cycle times (250 µs for positional control), a signal resolution of 32 bits and an overload capacity of more than 200 percent, the new servo inverter is as well-suited to highly dynamic, precise, multi-axis applications. Examples are those found in handling and packaging machines or robot applications, also simple positioning tasks.

The integrated safety functionality also simplifies the machine design. "Safe Torque Off (STO)" is provided as standard, while in future, in order to implement extended safety networks, a variant will be available offering, for example, SS1, SS2, SOS, SLS, SDI or SLI, and which achieves the highest safety level (SIL 3, PL e) over EtherCAT (FSoE). Lenze also describes the i700 as part of their "Generation Easy", products that speed tasks and reduce costs from the initial idea through to build and operation.

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