Optical incremental linear encoder RGH22
- Production:
- Renishaw plc (Graet Britain)
- Encoder RGH22
The linear RGH22 encoder is a reliable, robust device that provides resolution up to 50 nm. It provides paired limit switches, an integrated adjustment indicator and a unique optical signal filtering system, which guarantees an exceptionally high degree of resistance to contamination.
When working with an open, non-contact reading head of the RGH22 encoder, a unique RGS20-S scaled tape with a 20 μm pitch of Renishaw is used, and a resolution of up to 50 nm is achieved.
Features and benefits of the RGH22 reading head
A compact and robust reading head with an integrated interpolator provides digital and analog output signals that meet the industry standard.
- The non-contact design provides high speed and reliable operation with zero friction and no mechanical wear.
- Simple procedure for installing and setting the reading head due to the presence of a special built-in LED indicator.
The optical signal filtering system guarantees high signal stability under conditions that do not allow the use of most open optical encoders.
- Zero mark provides repeatability of the initial position, and limit switches - automatic signal giving initiating stop of the moved node.
Scale tape RGS20-S in 20 μm steps
RGS20-S tape with a pitch of 20 microns is made of a thin flexible steel strip, which is coated with gold to provide high reflectivity and corrosion resistance. This tape can be fixed, using a self-adhesive base, on most materials used in the industry, including metals, ceramics and composite materials.
- The tape is supplied on a reel, so you can cut off parts of the desired length, up to 70 m.
RGS20-S tape has temperature characteristics corresponding to the characteristics of the substrate on which the tape is attached, which simplifies the process of compensating for the effect of temperature.
- A special device is provided for fast and accurate installation of the scale tape (patented).
The lacquer coating of the tape is easy to clean and is resistant to external influences that occur when manipulating the tape.
You can always cut a piece of any necessary length that optimizes inventory management and minimizes waste.
- High accuracy of linearity tolerance of ± 3 μm / m provides high overall accuracy with simple adjustment procedure.
Specifications
| Built-in LED head position indicator |
Yes |
| Measuring range, m: | up to 50 |
| Length, m: | — optical scale RGS20–S — from 0,1 to 50 (more than 50 m — by special order) — optical scale RGS20–PC — from 1 to 50 |
| Resolution of digital output signal RS422, nm: | 50 , 100, 500, 1000, 5000 |
| Resolution of analog output signal: | — 1 Vpp — 12 mkA |
| Step of the scale, mkm: | — optical scale RGS20–S — 20 — optical scale RGS20–PC — 20 |
| Max speed, m/s: | — for digital output signal — up to 10 — for analog output signal — up to 4 |
| Clearance between reading head and optical scale, mm: |
0,8 ± 0,1 |
| System accuracy at 20 ° C, μm/m: | ± 15 (± 3 — with 2-point compensation) |
| Scale option: | —with self-adhesive base |
| Coefficient of thermal expansion, μm/m/°С: | — corresponds to the substrate material, the ends of the scale are fastened by clamps |
| Supply voltage, V: | 5 ± 5 % |
| Current consumption (without load), mA: | — 120 (in typical conditions) — 150 (for resolutions 100 nm) — 300 (for resolutions 100 nm) |
| Material: | — optical scale RGS20–S — thin,
flexible steel gilded strip with protective lacquer coating
- optical scale RGS20–PC — thin, Flexible steel gilded strip with protective polyester coating for increased resistance to the effects of aggressive chemicals |
| Cable: | — flexible, 12-core with double shielding, outer diameter 4.7 mm, bending life more than 10x10 6 cycles with a bend radius of 50 mm - flat cable with double shielding |
| Length of the cable, m: | 0.5, 1, 1.5, 2, 3, 5 (connector type D-sub (15-pin), round connector (9- and 12-pin), in-line connector (16-pin) or free terminal (without connector)) |
| Dimensions of the reading head RGH22 (height × length × width), mm: | 16,0 × 44,0 × 27,0 |
| Mass of the reading head, g: | 45 |
| Mass of the cable, g/m: | 38 |
| Reference mark (zero): | Magnetic actuator (one-way repeatability up to 1 resolution unit) |
| Limit switches: | – single – paired |
| Temperature, °С: | — process — from 0 to + 55 — storage — from – 20 to + 70 |
| Degree of protection: | IP50 |
| Humidity (without compensation), %: |
from 10 to 90 |
| Process acceleration, m/s 2: | 300 |
| Impact (in non-operating state, 6 ms, half-sinusoidal impulse), m/s 2: |
1000 |
| Vibration (in operation mode, at, at 55-2000 Hz), m/s 2: | not more than 100 |
See also:
- Optical incremental linear encoder RGH24
- Optical incremental linear encoder RGH25F
- Optical incremental linear encoder RGH25F UHV
- Optical incremental linear encoder RGH26
Series of optical incremental linear sensors RG2
Downloads:
Description and technical specifications
- Non-contact position encoders guide (EN) (pdf, 10`420 Кб)
