As the official representative of JVL, Rotero has expanded its range of linear actuators with two versions from JVL. Both versions are based on JVL ServoStep motors and are distinguished by the use of a locked piston rod and an open spindle, respectively. The actuators can be used, among other things, for setting up and adjusting machines when they switch to a new product.
Specialist in integrated servo and stepper motors JVL has expanded its range of ServoStep motors with two new models. These motors can be connected directly to a drive spindle and are suitable, among other things, as an electric alternative to hand wheels used to adjust and set up machines.
The first variant is an electric actuator with piston rod that is ideally suited as a replacement for pneumatic actuators. The second version is an open spindle type developed for companies that design their own guides. There is a choice between a plastic nut (polyoxymethylene, acetal or POM for short) for light applications or a ball screw for fast and accurate movements.
Choice of spindles with different pitches. This enables positioning down to the µ range. In theory, you could even go down to tenths of a µm.
Both versions are available in three sizes: with Nema 17 (flange size 43 mm), Nema 23 (flange size 57 mm) or Nema 34 motor (flange size 87 mm).
In both versions, the intelligent stepper motors combine the powerful technology of stepper motors with the precise controllability of servo motors. The motor shaft/bearing combination has been replaced by a hollow shaft mounted in an oversized double-row bearing. Depending on the size, this allows the axial force to reach up to 7,100 N. The hollow shaft itself has a clamp that allows direct mounting on the spindle.
A major advantage of ServoStep motors is that they integrate all the necessary components in a single housing: motor, encoder, drive and control electronics, and optional Ethernet or CAN bus. In addition, all other industrial Ethernet protocols are also available (such as Profinet, EtherNet/IP, EtherCAT, Sercos, ModbusTCP/UDP and Powerlink).
The SMC66 controller has a superior high resolution of 409,600 steps per revolution. This allows the motor to run extremely smoothly at any speed with a speed resolution of up to 0.01 min-1. It also has eight I/Os that can be individually configured as digital or analogue inputs or outputs. The I/Os can be used as local or remote I/O for the central PLC or together with the ePLC in a standalone application.
Finally, the linear actuators can be precisely tailored to a specific application thanks to a wide range of options. For example, an absolute multiturn encoder or an STO (safe torque off, SIL 3).
Specifications and strengths
- Fully integrated total solution – just add your own spindle (motor with already integrated spindles also possible)
- Double ball bearings for a maximum axial load of up to 7,100 N
- Closed loop control
- Energy efficient thanks to automatic power control
- Built-in ePLC with eight DIO, 24 V or 0-5 V (12 bit) analogue input with advanced filters
- Ultra-high resolution of 409,600 steps/rev
- Speed resolution up to ± 0.01 min⁻¹
- Adjustment of speed, torque or other parameters possible during operation
- Optional: industrial Ethernet – support for all major protocols Profinet, EtherNet/IP, SERCOS, EtherCAT, Powerlink and ModbusTCP/UDP
- Optional: CANopen protocol with DS 301 and DSP 401 support. Dual M12 connectors for easy setup of a CAN bus ring network.
- Optional: STO (safe torque off, SIL3)
