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Data sheet: RCU10 real time quadrature compensation system

Data sheet: RCU10 real time quadrature compensation system
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Data sheet: RCU10 real time quadrature compensation system - 1

RCU10 real time quadrature compensation system The RCU10 real time quadrature compensation system overcomes environmental error sources in linear motion systems to improve process accuracy and repeatability. The RCU10 monitors a machine’s ambient environment via a series of sensors and uses advanced digital signal processing to perform real time compensation on the position feedback signals. The unit provides the corrected feedback signals to the motion controller in either RS422 digital AquadB or analogue sine/cosine 1 Vpp formats. The factory calibrated sensors can be linked via a network and optional sensor distribution box. Each sensor is configured to a unique network address to enable interrogation by any compensator within multi-axis configurations. Configuration of the RCU10 is achieved via an RS232 link to a PC running the Renishaw RCU10-CS-XX configuration software. This enables the user to select the mode of compensation and define axis specific parameters (input resolution, output resolution, output format etc). The RCU10 can provide: • Refractive index compensation for Renishaw laser encoders, using air pressure and temperature sensors. • Scale expansion compensation for incremental linear encoders, using material temperature sensors. • Thermal expansion compensation of machine structure using material temperature sensors. • Work piece thermal expansion compensation, using material temperature sensors. General outline and dimensions Dimensions in mm (inches) Overall dimensions: Height: 42 (1.65) Length: 350 (13.78) Width: 133.5 (5.26) Fixing: 2 off M6 x 1.0 x 15 mm* or 1 /4-20-UNC x 5/8 cap head screws* *Not supplied The RCU10 has DIN rail compatible mounting brackets and can be mounted in any orientation. General information: Weight 2 kg EMC compliance BS EN 61326 FCC 47 CFR PART 15J

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Data sheet: RCU10 real time quadrature compensation system - 2

Outputs to controller Pressure sensor (optional) Auxiliary I/O Reference switch input High speed inter compensator communication link Encoder inputs Sensor network ports Status display RCU10 power supply Status Digital quadrature input* Operating environment Pressure Normal atmospheric (650 mbar to 1150 mbar) RCU10 output signals Digital incremental* RS422 differential line driver outputs Resolution Performance overview Input resolutions Reference mark signal Output resolutions ±1 ppm (refractive index compensation only)* ±2 ppm (with 10 ppm/ºC material compensation) Maximum velocity...

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Data sheet: RCU10 real time quadrature compensation system - 3

Environmental sensors In air, the wavelength of light is a function of the refractive index, which is dependent on temperature, pressure and, to a lesser extent, humidity. To compensate for refractive index variations, the RCU10 system has an optional internal air pressure sensor and remote air temperature sensors, to accurately monitor these parameters in real time. A humidity value can be entered manually via the configuration software if required. Material temperature sensors are also available to provide thermal expansion compensation for incremental linear encoders, machine structure...

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Data sheet: RCU10 real time quadrature compensation system - 4

Renishaw plc New Mills, Wotton-under-Edge Gloucestershire GL12 8JR United Kingdom Compensation software The RCU10-CS-XX software enables a wide range of parameters within the compensator to be configured to match the specific requirements of the application. Users with the software suite installed on their PC - and appropriate access rights - can extract and amend all relevant information from within the compensator system. The minimum PC specification recommended to run the RCU10-CS-XX software is: • • • • 200 MHz Pentium processor (or equivalent) 20 MB RAM (minimum) 40 MB free hard drive...

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