Description
The UHC-326-U-PFN is a universal digital axis control module designed specifically for controlling hydraulic axes via an integrated Profinet IO RT interface was developed. It enables both precise position control and integrated pressure or force control, which can operate independently or as a backup control system.
Versatile sensor technology and positioning
- Flexible measurement systems: The module supports both digital position measurement systems via a universal SSI interface (with a resolution of up to 1 µm) and analogue sensors (0–10 V or 4–20 mA).
Advanced positioning modes:
- SDD mode: Distance-dependent braking for robust and precise positioning, unaffected by pressure fluctuations.
- NC mode: Numerically controlled positioning with an internal profile generator for constant travel speeds.
- Rapid-slow motion: An integrated function for fast feed movements and precise positioning at the target position.
Integrated pressure and force control
The device has a built-in pressure regulation function, which is ideally suited to applications such as forming machines or presses. It can be used as switch-off pressure-limiting control Operation: If a predefined setpoint pressure is exceeded, the controller reduces the speed until the actual pressure matches the setpoint. To determine the force precisely, the module calculates a Pseudo-differential pressure, which takes into account the area ratios at the cylinder.
Adaptability thanks to FlexiMod
A key feature of the UHC-326-U-PFN is its FlexiMod script programming. This allows functions and data exchange via the fieldbus to be customised. It is even possible to replace the fieldbus inputs entirely with physical inputs in order to operate the device without a bus connection.
Advanced Control Technology and Diagnostics
- Precision functions: The module offers features such as Driftkompensation for optimum zero-point adjustment, Fine positioning to compensate for load-dependent errors, as well as a Acceleration feedback to improve performance in low-frequency drives.
- Comprehensive monitoring: The system continuously monitors potential sources of error such as cable breaks (for 4–20 mA), sensor faults or internal data errors.
- Hardware and software: The device is a compact snap-on module for the DIN mounting rail (protection class IP20). Parameterisation is carried out conveniently via a USB interface with the WPC-300 software, which also offers an oscilloscope function for diagnostics.
Thanks to the combination of highly dynamic control (1 ms sampling time), a flexible scripting language and Profinet connectivity, the UHC-326-U-PFN is a high-performance solution for complex hydraulic drive applications.
