LinMot linear motors, together with the associated Servo Drives, create an optimal drive system for linear positioning tasks. The wide range of drive products allows rapid implementation of simple applications with two end positions, up to complex, high-precision multi-axis applications with synchronization to a main electronic shaft.
Connection to an overlaid control system can be made via analog, digital, or serial interfaces, fieldbuses, or ETHERNET. The wide range of fieldbus interfaces and protocols allows simple integration of LinMot Servo Drives in any controls concept. Regardless of the manufacturer and type of controls, LinMot Servo Drives provide the right interface to connect to an overlaid PLC, industrial PC, or proprietary control system.
Intelligence Right in the Drive
LinMot Servo Drives are highly integrated inverters with one or more power elements, for controlling the motors, and an intelligent control element with integrated position regulation. The control element performs all drive-related control and monitoring functions. It allows direct position set points, or travel along internally stored motion profiles from the overlaid control, using simple analog or digital signals.
Using a software application, customer-specific applications can be programmed directly in the drive. This is mainly an advantage when very fast sequences need to be implemented, for which the communication speed or computing power of the overlaid control are not sufficient.
Technology functions are generally available functional blocks that provide a complete solution for standard applications. The technology function can take over complete sequence control of a process. With the technology function “winding textile yarns”, only a few parameters are provided by the overlaid control, such as the number of windings. the complete winding process then takes place automatically.
The basic functions include communication with overlaid control, generation of target values for speed and acceleration-limited point-to-point motions, travel along motion profiles, synchronization of drives to an electronic main or master shaft, and synchronization in multi-axis applications.
Monitoring and Control
The basic functions of the Servo Drive, such as position and current control; control and monitoring of the power element; and monitoring the motor temperature, power, and position are handled by the control, monitoring, and regulation element, which also controls the entire finite state machine of the drive.
Because of their high dynamic capabilities, long life, and ability to travel to several positions, LinMot linear motors are often used as a replacement for pneumatic cylinders. Various end positions can be stored in the drive and are invoked via digital signals, just as with a pneumatic cylinder. Once the end position is reached, this is reported to the overlaid control via the In-position signal on the digital output. Speed and acceleration can be configured freely for each motion.
With control via fieldbuses or an Ethernet interface, standard applications can be implemented with simple point-to-point motions. Position, speed, and acceleration can be configured freely, and are provided via the bus. Complicated or co-dependent motions can be stored on the drive in the form of travel profiles, and started via digital trigger signals or the bus connections.
Complex applications with synchronization to a main or master shaft can be implemented without trouble using the integrated master encoder interface. Travel along paths from an overlaid NC drive can be implemented via the +/-10V interface, or in streaming mode (PVT, PV). With the use of our high-resolution external position sensor, high-precision positioning tasks of +/-10 micron are possible.
In multi-axes or linked operation, the master encoded interface can control both individually and synchronous to a main or master shaft. For complex designs, several axes can be synchronized in master-booster or master-gantry mode. This allows simple implementation of portal designs with two synchronized axes, which are controlled by the overlaid control as a single axis.