ISO 9001:2015
Modern means of measuring equipment

Optical incremental linear encoder TONiC with a scale tape from Invar RELM

Renishaw plc (Graet Britain)

Encoder TONiC with a scale tape from Invar RELM
Encoder TONiC with a scale tape from Invar RELM

The new high-precision RELM line provides high speed and non-contact readout in combination with new solutions including dynamic signal processing and IN-TRAC ™ - optical zero mark with automatic synchronization. TONiC encoder system with the RELM ruler is exceptionally resistant to external influences, while providing the performance inherent only to encoders with a much smaller scale step. With an accuracy of ± 1 μm, low thermal resolution and resolution up to 1 nm, the RELM line meets the highest requirements for precision motion measurement systems.

The system includes the following components:
- invar ruler RELM with a step of 20 microns,
- reading head TONiC T1000,
- an analog or digital Ti-interface.

Features and Benefits of the TONiC T1010 and Ti-Interface Reader

- Periodic error: ± 30 nm, which ensures the accuracy of operation inherent in encoders with a smaller pitch.
- Compact overall dimensions: 10.0 × 35.0 × 13.5 mm (H×D×W).
- Extremely high signal stability under conditions not acceptable for most open optical encoders.
- User selectable automatic gain adjustment (AGC) mode allows to maintain a constant analog signal amplitude of 1 Vpp.
- Ability to work at speeds up to 10 m/s and temperatures up to 70 ° C.
- New opportunity! Increase the stability of positioning due to the optical signal filtering system, characterized by low noise (jitter).
- Standard analog and digital output signals.
- Easy setup and diagnostics of the system thanks to LED indicators on the reading head and interface.
- The flexible cable between the reading head and the UL-compliant interface is up to 10 m long.
- Compliance with the requirements of the RoHS directive.

Invar RELM ruler with 20 μm pitch

RELM ruler in 20 μm increments is made of Invar, a nickel-iron alloy having a low expansion coefficient. Due to the high strength of Invar from it, it is possible to produce rulers with a much smaller cross section than glass. At the same time it is easier to handle Invar rulers during transportation and installation, without risking to break them.
- A number of standard rulers are produced, custom-made lines of non-standard lengths are available on request.
- Accuracy up to ± 1 μm, certified for each line separately with verification in accordance with international standards.
- Low coefficient of thermal expansion: Invar, ≈ 0.6 μm / m /0С (0 0C — 30 0C).
- Optical zero mark IN-TRAC ™ with automatic synchronization provides two-way repeatability of arrival to zero point at speeds of up to 10 m/s.
- The mean (RELM) and the extreme (RELE) positions of the zero mark are provided as standard.
- Pair limit switches installed directly on the line provide an automatic feed of the signal that initiates the stop of the moved assembly.
- Easily installed, directly on the substrate, using the base bracket and clamps or self-adhesive base.


Built-in LED
head position indicator
Measuring range, m: from 0,07 to 1,12
Length of the optical scale RELM, m: from 0,08 to 1,13
Resolution of digital output signal RS422, nm: 1, 5, 10, 20, 50 , 100, 200, 500, 1000, 5000
Resolution of analog output signal: — 1 Vpp
Step of the scale, mkm: 20
Max speed, m/s: 10
Clearance between reading head
and optical scale, mm:
2,1 ± 0,15
System accuracy at 20 ° C, μm/m: ± 1
Scale option: —with self-adhesive base
- mechanically fastened (base bracket and clamps)
Coefficient of thermal expansion, μm/m/°С: — ≈ 0,6 (temperature from 0 °C to + 30 °C)
— less than 1,4 (temperature from + 30 °C to + 100 °C)
Supply voltage, V: 5 ± 10 %
Current consumption (without load), mA: — < 100 (analog system)
— < 200 (digital system)
Material of the optical scale RELM: highly stabilized, low-expansion iron-nickel alloy (ZeroMet. - Invar)
Cable: — flexible, with double shielding, outer diameter 4,25 ± 0,25 mm, bending life more than 20x10 6 cycles with a bend radius of 20 mm , corresponds to the UL standard
Length of the cable, m: 0.5, 1, 1.5, 2, 3, 5 (connector type D (15-pin), mini connector for direct connection to Ti-interface)
Dimensions of the reading head TONiC T1010 (height × length × width), mm: 10,0 × 35,0 × 13,5
Mass, g: reading head TONiC T1010 - 10
- Ti-interface - 100
Mass of the cable, g/m: 26
Reference mark (zero): optical, IN-TRAC, with automatic zero-signal synchronization
Limit switches: – single, magnetic
– paired, magnetic
Temperature, °С: — process — from 0 to + 70
— storage — from – 20 to + 70
Degree of protection: reading head TONiC T1010 — IP40
— Ti–interface — IP20
Max humidity
(without compensation, + 40 °C), %:
Process acceleration, m/s 2: 500
Impact (in non-operating state,
6 ms, half-sinusoidal impulse), m/s 2:
Vibration (in operation mode, at, at 55-2000 Hz), m/s 2: not more than 100

Additional information