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Measuring standard
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RESM: one-piece low profile stainless steel ring. Standard ‘A' section with tapered internal diameter or low inertia ‘B' section rings available
Also available for partial rotation applications as REST
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Readhead size (LxHxW)
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35 mm x 13.5 mm x 10 mm
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Scale pitch
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20 μm
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Ring outer diameter
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52 mm to 550 mm. For larger custom sizes, contact Renishaw
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Line count
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8 192 to 86 400 (depending on ring size)
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Reference mark
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RESM: single IN-TRAC reference mark ring
REST: two reference mark ring for partial rotation applications
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Accuracy*
Graduation accuracy
System accuracy
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±3.97 to ±0.38 arc seconds (depending on ring diameter)
±4.20 to ±0.40 arc seconds (depending on ring diameter)
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Maximum speed
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4 400 rpm (for 52 mm diameter ring)
(See data sheet for details)
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Sub-Divisional Error (SDE)
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Typically <±30 nm
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Dynamic signal control
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Real time signal conditioning including Auto Gain Control (AGC), Auto Balance Control (ABC) and Auto Offset Control (AOC) for optimised performance across a range of operating conditions
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Incremental signals
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5 μm to 20 nm resolution
(See data sheet for details of angular resolutions)
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Electrical connection
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0.5 m, 1 m, 1.5 m, 2 m and 3 m cable lengths with D-type connectors (9 and 15 pin) or circular in-line connector (12 pin)
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Power supply
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5 V -5%/+10%, typically <200 mA fully terminated
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Vibration (operating)
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100 m/s2 max @ 55 Hz to 2 000 Hz
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Shock (non-operating)
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500 m/s2, 11 ms, ½ sine, 3 axes
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Operating temperature (system)
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0 °C to +70 °C
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Sealing
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IP40
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