Speed - Renishaw ATOM Installation Manual

Ri interface:

Speed

Clocked outputs
Ri0100, Ri0200 and Ri0400 interfaces have clocked outputs.
Customers must ensure they comply with the lowest recommended counter input frequency.
Maximum speed (m/s)
20 µm system
0100 0200 0400
(0.2 µm)
(0.1 µm) (50 nm)
–
0.8 0.4
– 0.5
0.25
0.8 0.4 0.2
0.5
0.25 0.12
Non-clocked outputs
Ri0004, Ri0008, Ri0020 and Ri0040 interfaces have non-clocked outputs.
20 µm system
Maximum
Interface
speed
type
(m/s)
0004 (5 µm) 10
0008 (2.5 µm)
10
0020 (1 µm)
10
0040 (0.5 µm) 10
Analogue speed
40 µm system – 20 m/s (-3dB)
20 µm system – 10 m/s (-3dB)
Angular speed
Angular speed depends on disc optical diameter – use the following equation to convert to rev/min.
V x 1000 x 60
Angular speed (rev/min) =
p
D
ATOM
rotary installation guide
40 µm system
0100 0200 0400
(0.4 µm) (0.2 µm) (0.1 µm)
– 1.6 0.8
1.0 0.5
–
1.6 0.8 0.4
1.0 0.5 0.24
40 µm system
Maximum
Interface
speed
type
(m/s)
0004 (10 µm) 20
0008 (5 µm)
20
0020 (2 µm)
20
0040 (1 µm) 20
Where V = maximum linear speed (m/s) and D = Optical diameter (mm)
Lowest recommended counter
input frequency
(MHz)
12
10
6
4
Lowest recommended counter
input frequency
(MHz)
x 4
Encoder velocity (m/s)
safety
Resolution (µm)
factor
29