Positioning systems ensure efficient and reproducible format changes in packaging machines. With the modular box from Lenord + Bauer, up to 17 secondary axes can be automated with intelligent actuators. Up to four boxes can be combined to form a logical unit. The heart of the modular control unit is the CPU module in the master box. So-called COM modules ensure communication between the individual boxes with five or ten selectable module slots.
Each drive is connected to a module via just one hybrid cable. Thanks to separate management of the motor and logic supply, communication and diagnostic functions are maintained even when the motor supply is switched off. In order to optimize cable lengths, the boxes can be distributed throughout the system. The grouping of actuators via the configuration of the distributed boxes enables safe shutdown of parts of a system.
As a subsystem, the modular box reduces the load on the communication network of the machine and optimizes the data flow. The CPU module acts as the node for communication with the machine controller. The configurable Ethernet-based real-time interface supports communication profiles such as PROFINET, EtherCAT, POWERLINK, EtherNet/IP or Modbus/TCP. Approved functional blocks are used to integrate the system into the machine controller. These generate the motion tasks required to control the drives and forward status data such as motor current, absolute position, device temperature and threshold values to the PLC. The evaluation of this device data enables, for example, preventive maintenance of the machine.
The CPU module can also exchange data via a USB interface or in conjunction with an optional network interface (web browser). This allows parameter sets to be written to the CPU and status data to be read and immediately processed.
The functional scope of the modular box can be expanded with optional additional software packages in the future.