System Specifications
Resolution and Maximum Speed
Mercury 3000 systems have programmable interpolation from x4 to x1024 in integer steps.
Below is a table of sample values.
Rotary - 20μm grating pitch
Rotary Fundamental Interpolation
Glass Scale Resolution
Note: The range of available values is x4 to x1024
Diameter in integer steps; example values below.
0.472” [12.00mm] 1650 CPR x4 x100 x256 x1024
interpolated resolution (CPR) 6,600 165,000 422,400 1,689,600
interpolated resolution (arc-sec/count)** 196.4 7.85 3.08 0.767
interpolated resolution (µrad/count)** 952 38.0 14.86 3.79
maximum speed* (RPM) 13090 10470 4090 1020
0.750” [19.05mm] 2500 CPR x4 x100 x256 x1024
interpolated resolution (CPR) 10,000 250,000 640,000 2,560,000
interpolated resolution (arc-sec/count)**129.6 5.18 2.03 0.506
interpolated resolution (µrad/count)** 628.3 25.1 9.8 2.5
maximum speed* (RPM) 8640 6912 2700 675
1.250” [31.75mm] 4096 CPR x4 x100 x256 x1024
interpolated resolution (CPR) 16,384 409,600 1,048,576 4,194,304
interpolated resolution (arc-sec/count)** 79.1 3.16 1.24 0.309
interpolated resolution (µrad/count)** 383.5 15.3 6.0 1.5
maximum speed* (RPM) 5273 4219 1648 412
2.250” [57.15mm] 8192 CPR x4 x100 x256 x1024
interpolated resolution (CPR) 32,768 819,200 2,097,152 8,388,608
interpolated resolution (arc-sec/count)** 39.6 1.58 0.618 0.154
interpolated resolution (µrad/count)** 191.7 7.7 3.0 0.7
maximum speed* (RPM) 2637 2109 824 206
4.250” [107.95mm] 16384 CPR x4 x100 x256 x1024
interpolated resolution (CPR) 65,536 1,638,400 4,194,304 16,777,216
interpolated resolution (arc-sec/count)** 19.7 0.791 0.309 0.0772
interpolated resolution (µrad/count)** 95.9 3.83 1.5 0.4
maximum speed* (RPM) 1318 1054 412 103
*Maximum speed produces an encoder quadrature output of up to 28.8 million states per second.
** Resolution values shown are approximate. To calculate exact resolution values, convert from CPR (Counts Per Revolution) to the desired units.
Note: Specifications assume XOR function which is available in all standard controllers.
To calculate desired rotary interpolation multiplier, use the following equation
Interpolation Multiplier = Desired Resolution (CPR) / Fundamental Scale Resolution (CPR)
All Specifications are subject to change. All data is accurate to the best of our knowledge. MicroE Systems is not responsible for errors.
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Linear - 20μm grating pitch
Interpolation Resolution Maximum Speed*
x4 5.000µm/count 7200mm/s
x10 2.000µm/count 7200mm/s
x20 1.000µm/count 7200mm/s
x40 0.500µm/count 7200mm/s
x80 0.250µm/count 7200mm/s
x100 0.200µm/count 5760mm/s
x200 0.100µm/count 2880mm/s
x400 0.050µm/count 1440mm/s
x1000 0.020µm/count 576mm/s
To calculate desired linear interpolation multiplier, use the following equation
Interpolation Multiplier = Grating Period (20µm) / Desired Resolution (µm/count)
(14 paginas)
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