SiGNUM™ RESM圆光栅系统

SiGNUM™ RESM angle encoder offers accuracy, resolution, and repeatability at high speed and high temperature. It also offers ultra-low cyclic error and the IN-TRAC™ optical reference mark. The RESM angle encoder offers performance to suit the most demanding precision applications. SiGNUM™ is also available as a linear encoder.

SR readhead and Si interface features and benefits

The system comprises the SR readhead, Si interface and RESM 20 µm ring.

• Dynamic signal control ensures cyclic error of ±30 nm, offering 'fine pitch' encoder performance
• Capable of operation over 4,500 rev/min and up to 85 °C
• Excellent signal stability in conditions unsuitable for most open, optical encoders
• IP64 'recoverable readhead' offers "wipe clean" recovery from coolant splashes or floods
• Si interface offers industry standard analogue and digital outputs
• The FANUC serial compatible interface (Si-FN) offers FANUC serial communications direct from the interface for higher performance and easier connectivity (the Si-FN is compatible only with Ø52 mm, Ø104 mm, Ø209 mm and Ø417 mm rings)
• User selectable AGC maintains 1 Vpp analogue signal amplitude
• Readhead and interface LEDs for optimum set-up and system diagnosis
• High flex UL approved cable – up to 10 m between readhead and interface
• Optional IP68 in-line connector available

Compare the SR with alternative optical angle readheads.

RESM ring features and benefits

The RESM ring is a one-piece stainless steel ring with 20 µm scale marked directly on the periphery, which features the IN-TRAC™ auto-phase optical reference mark. The low profile RESM is available in a wide range of sizes (Ø52 mm to Ø550 mm) and line counts, all of which feature a large internal diameter for flexible integration.

• IN-TRAC™ auto-phase optical reference mark, bi-directionally repeatable at operational speeds over 4,500 rev/min (Ø52 mm) and up to 85°C
• A wide range of diameters and line counts provide compatibility with industry standard controllers (Ø52 mm to Ø550 mm with line counts from 8,192 to 86,400)
• Patented taper mount minimizes installation errors and simplifies integration
• Graduation accuracy to ±0.5 arc second and system repeatability to 0.02 arc second (20 nm Si interface with a Ø413 mm ring)
• 10 mm x 10 mm small cross section ring
• Low mass, low inertia design enhances system accuracy and dynamic performance
• One piece stainless steel ring withstands vibration, mechanical and thermal shock, and thermal overload
• For even higher acceleration and deceleration, and faster settling times, extra-low inertia 'B' section rings are available
• FANUC serial Si-FN interface compatible with Ø52 mm, Ø104 mm, Ø209 mm and Ø417 mm rings
• For partial arc applications, customer positioned, dual optical limits are available

SiGNUM™ software

SiGNUM™ software is PC based and provides comprehensive calibration, set-up optimisation and real-time diagnostics to simplify installation and system maintenance. The Si interface is connected to the PC via a mini USB connector.

• 'Real time', remote monitoring of signal level and system performance, including signal strength meter, Lissajous plot and IRED feedback meter (AGC drive), to assist with system optimisation
• Pitch adjustment indicator enables fine adjustment of the readhead pitch
• Quick and simple remote calibration of the reference mark and incremental signals
• Remote monitoring of system performance via USB during real-time closed-loop operation
• System alerts warn the user of conditions that are less than optimum (warning function) and of any errors that occur (alarm function)
• Technical 'info' guide provides contextual help and a detailed explanation of system functions and fault-finding
• System configuration page displays Si interface configuration detailing resolution, clock frequency, etc
• DRO functionality available with FANUC serial Si-FN interface
• Multilingual user interface allows the user to select from English, German, Italian and Japanese

Download SiGNUM™ software now.

Technical specifications

System accuracy - 20 µm pitch RESM and SiGNUM™

Note: system error is graduation error plus sub-divisional error (SDE). Effects such as eccentricity influence installed performance; for application advice please contact Renishaw.

Additional resources

Accessories and external interpolation options

For further information and product options, visit the encoder product configurator.