 | | Encoder comparison table
Please use the tables below to compare Renishaw's range of optical linear and optical angle encoder systems. For further information and product options, please visit the encoder product configurator.
Optical linear readheads
This table is available as a printer friendly PDF: Optical linear readheads comparison table
| Product name |
Outputs (resolution) |
Reference mark |
Limit switches |
Maximum speed |
Interpolation |
Alarm signal format |
IP rating |
Scale types |
Ride height tolerance |
Set-up LED |
Operating temperature |
Cable |
Minimum customer clock |
Vacuum compatible |
Data sheet |
|
RGH22
16.0 x 44.0 x 27.0 mm
45 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.1 µm, 50 nm.
Analogue: 1 Vpp, 12 µA |
Magnetic actuator |
Single or dual limits |
10 m/s |
Internal |
Differential alarm or 3-state |
IP50 |
RGS20-S tape scale |
0.8 ±0.1 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 12 core up to 5 m |
20 MHz, 10 MHz, 5 MHz (for 0.1 µm and 50 nm) |
No |
RGH22 series readhead data sheet |
|
RGH24
14.8 x 36.0 x 13.5 mm
11 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm, 20 nm, 10 nm.
Analogue: 1 Vpp, 12 µA |
Magnetic actuator |
Single limit |
10 m/s |
Internal |
3-state |
IP40 |
RGS20-S tape scale |
0.8 ±0.1 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 8 core up to 5 m |
12 MHz, 8 MHz, 6 MHz, 4 MHz (for 0.2 µm, 0.1 µm and 50 nm) |
No |
RGH24 series readhead data sheet |
|
RGH25
10.5 x 36.0 x 13.5 mm
9 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm, 20 nm, 10 nm.
Analogue: 1 Vpp, 12 µA |
Magnetic actuator |
Single limit |
10 m/s |
RGB25 (x4 to x400) RGF (x100 to x2000) |
Differential alarm or 3-state |
IP40 |
RGS20-S tape scale |
0.8 ±0.1 mm |
On interface |
0 °C to 55 °C |
Hi-flex, 8 core up to 5 m |
20 MHz, 10 MHz, 5 MHz (for 0.1 µm and 50 nm) |
RGH25U UHV, RGH25F UHV, RGH20F UHV data sheet (archive) |
RGH25 Series Digital and Analogue Readhead data sheet (archive)
RGH25F high resolution encoder system data sheet (archive) |
|
RGH26
16.0 x 44.0 x 27.0 mm
45 g |
5 µm, 1 µm, 0.5 µm Mitsubishi serial outputs |
Magnetic actuator |
Dual limits |
6 m/s |
Internal |
N/A |
IP50 |
RGS20-S tape scale |
0.8 ±0.1 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 12 core up to 5 m |
N/A |
No |
RGH26 series serial comms readhead data sheet |
|
RGH34
9.5 x 15.0 x 15.0 mm
2 g |
RS422: 10 µm, 5 µm, 2 µm, 1 µm, 0.4 µm, 0.2 µm, 0.1 µm.
Analogue: 1 Vpp with RGI34 interface |
Magnetic actuator |
Single limit |
8 m/s |
RGI34 interface (x4 to x400) |
3-State |
0 |
RGS40-S tape scale, RGS40-G glass scale |
1.5 ±0.15 mm |
On RGI34 interface |
0 °C to 55 °C |
FPC cable up to 150 mm between head and interface |
12 MHz, 8 MHz, 6 MHz, 4 MHz (for 0.4 µm, 0.2 µm and 0.1 µm) |
No |
RGH34 series encoder system data sheet |
|
RGH40
17.0 x 44.0 x 27.0 mm
30 g |
RS422: 10 µm, 5 µm, 2 µm, 1 µm, 0.4 µm, 0.2 µm, 0.1 µm.
Analogue: 1 Vpp |
Magnetic actuator |
Dual limits |
10 m/s |
Internal |
Differential alarm or 3-state |
IP50 |
RGS40-G glass scale |
0.8 ±0.15 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 12 core up to 5 m |
20 MHz, 10 MHz, 5 MHz (for 0.1 µm and 50 nm) |
No |
RGH40 series readhead data sheet |
|
RGH41
17.0 x 44.0 x 27.0 mm
30 g |
RS422: 10 µm, 5 µm, 2 µm, 1 µm, 0.4 µm, 0.2 µm, 0.1 µm.
Analogue: 1 Vpp |
Magnetic actuator |
Dual limits |
15 m/s |
Internal |
Differential alarm or 3-state |
IP50 |
RGS40-S tape scale |
0.8 ±0.15 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 12 core up to 5 m |
N/A |
No |
RGH41 series readhead data sheet |
|
SR
14.8 x 36.0 x 16.5 mm
15 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm, 20 nm, 10 nm, 5nm.
Analogue: 1Vpp |
IN-TRAC™ auto-phase optical |
Customer positioned optical dual limits |
12.5 m/s |
Si interface (x4 to x4000) |
|
IP64 - 'recoverable readhead' |
20 µm RELM Invar scale, 20 µm RSLM stainless steel scale |
0.8 ±0.08 mm |
On readhead and Si interface |
0 °C to 85 °C |
UL hi-flex, 12 core up to 10 m |
40 MHz, 20 MHz, 12 MHz, 10 MHz, 8 MHz, 6 MHz, 4 MHz, 1 MHZ on all resolutions |
No |
SiGNUM SR, Si encoder system (Digital and analogue outputs) data sheet |
Optical angle readheads
This table is available as a printer friendly PDF: Optical angle readheads comparison table
| Product name |
Outputs (resolution) |
Reference mark |
Limit switches |
Maximum speed |
Interpolation |
Alarm signal format |
IP rating |
Scale types |
Ride height tolerance |
Set-up LED |
Temperature |
Cable |
Minimum customer clock |
Vacuum compatible |
Data sheet |
|
SR
 14.8 x 36.0 x 16.5 mm
15 g
|
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm, 20 nm, 10 nm, 5 nm.
Analogue: 1Vpp
FANUC serial: 20 bit, 23 bit, 26 bit |
IN-TRAC™ auto-phase optical |
Customer positioned optical dual limits |
4,500 rev/min (Ø52 mm) |
Si interface (x4 to x4000) |
|
IP64 - 'recoverable readhead' |
20 µm RESM ring |
0.8 ±0.08 mm |
On readhead and Si interface |
0 °C to 85 °C |
UL hi-flex, 12 core up to 10 m |
40 MHz, 20 MHz, 12 MHz, 10 MHz, 8 MHz, 6 MHz, 4 MHz, 1 MHZ on all resolutions |
No |
SiGNUM SR, Si encoder system (Digital and analogue outputs) data sheet |
|
RGH20
14.8 x 36.0 x 13.5 mm
10.5 x 36.0 x 13.5 mm (RGH20F)
11 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm, 20 nm (RGH20F only), 10 nm (RGH20F only).
Analogue: 1Vpp |
Bolt-on magnetic actuator |
Single limit |
2,938 rev/min (Ø52 mm) |
Internal or RGF (x100 to x2000) |
3-state |
IP40 |
20 µm RESR ring |
0.8 ±0.08 mm |
On readhead and RGF interface |
0 °C to 55 °C |
Hi-flex, 8 core up to 5 m |
12 MHz, 8 MHz, 6 MHz, 4 MHz (for 0.1 µm, 0.2 µm and 50 nm) |
RGH25U UHV, RGH25F UHV, RGH20F UHV data sheet (archive) |
RGH20 series readhead data sheet (archive) |
|
RGH35
9.5 x 15.0 x 15.0 mm
2 g |
RS422: 5 µm, 1 µm, 0.5 µm, 0.2 µm, 0.1 µm, 50 nm
Analogue: 1 Vpp using RGI34 interface |
Magnetic actuator |
Single limit |
2,000 rev/min(Ø52 mm) |
RGI34 interface (x4 to x400) |
3-State |
0 |
40 µm RESR ring |
1.5 ±0.15 mm |
On RGI34 interface |
0 °C to 55 °C |
FPC cable up to 150 mm between head and interface |
N/A |
No |
TBA |
|
RGH40
17.0 x 44.0 x 27.0 mm
30 g
|
RS422: 10 µm, 5 µm, 2 µm, 1 µm, 0.4 µm, 0.2 µm, 0.1 µm.
Analogue: 1 Vpp |
Magnetic actuator |
Dual limits |
3,687 rev/min(Ø52 mm) |
Internal |
Differential alarm or 3-state |
IP50 |
RGS40-G and 40 µm RESR rings |
0.8 ±0.15 mm |
On readhead |
0 °C to 55 °C |
Hi-flex, 12 core up to 5 m |
20 MHz, 10 MHz, 5 MHz (for 0.1 µm and 50 nm) |
No |
RGH40 series readhead data sheet |
|
RGH34
9.5 x 15.0 x 15.0 mm
2 g |
RS422: 10 µm, 5 µm, 2 µm, 1 µm, 0.4 µm, 0.2 µm, 0.1 µm.
Analogue: 1 Vpp with RGI34 interface |
Magnetic actuator |
Single limit |
2,020 rev/min(Ø52 mm) |
RGI34 interface (x4 to x400) |
3-State |
0 |
40 µm RESR ring |
1.5 ±0.15 mm |
On RGI34 interface |
0 °C to 55 °C |
FPC cable up to 150 mm between head and interface |
6 MHz, 4 MHz (for 0.4 µm), 12 MHz, 8 MHz, 4 MHz (for 0.2 µm and 0.1 µm) |
No |
RGH34 series encoder system data sheet |
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