Sinusoidal signals to quadrature signal calcs?
02 Jun 2016 01:45 #75315
by Duc
Sinusoidal signals to quadrature signal calcs? was created by Duc
Picked up a RSF MSA 6701 470mm linear encoder the other day for 20 bucks for placing a encoder on the knee of the Bridgeport boss5. I believe the knee will be W axis. I was hoping I could use the encoder as is but no the case. The unit output a sinusoidal signals 7-16 µApp which needs to be converted to Quadrature signals for the Mesa 7i77.
Linear encoder specs (Part number changes to MSA 670.13 in new number system)
Encoder MSA 670.13
grating pitch 20 µm
accuracy ±5 µm/m
RI K3: 105 mm from left and 455 mm from left
supply: +5 V
output: sinusoidal signals 7-16 µApp
CC 691: K1, 0,49 m uhf-cable, connector LD9
pin out acc. to Z: 43.981 (Attached)
measuring length 470 mm
Purchased a HEIDENHAIN EXE 602 B/5 unit off ebay for $33 delivered.
Guessing
.020 um = .02 mm
.02 mm /25.4(mm/in) = .000787401575 inches grating
5 fold divisions
.000787401575 inches grating/5 = .000157480315
encoder steps per inch
1/(.000157480315) = 6350 steps per inch
metric calcs are a little cleaner
20 um = .02 mm
.02mm / 5 = .004 mm
1/.004mm = 250 steps per mm
250 steps per mm * 25.4 (mm/in) = 6350 steps per inch
Any thoughts.....
Linear encoder specs (Part number changes to MSA 670.13 in new number system)
Encoder MSA 670.13
grating pitch 20 µm
accuracy ±5 µm/m
RI K3: 105 mm from left and 455 mm from left
supply: +5 V
output: sinusoidal signals 7-16 µApp
CC 691: K1, 0,49 m uhf-cable, connector LD9
pin out acc. to Z: 43.981 (Attached)
measuring length 470 mm
Purchased a HEIDENHAIN EXE 602 B/5 unit off ebay for $33 delivered.
Guessing
.020 um = .02 mm
.02 mm /25.4(mm/in) = .000787401575 inches grating
5 fold divisions
.000787401575 inches grating/5 = .000157480315
encoder steps per inch
1/(.000157480315) = 6350 steps per inch
metric calcs are a little cleaner
20 um = .02 mm
.02mm / 5 = .004 mm
1/.004mm = 250 steps per mm
250 steps per mm * 25.4 (mm/in) = 6350 steps per inch
Any thoughts.....
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02 Jun 2016 14:32 #75337
by andypugh
Try it and see what happens?
Replied by andypugh on topic Sinusoidal signals to quadrature signal calcs?
Any thoughts.....
Try it and see what happens?
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