Measuring lengths (ML), mm

 

170; 220; 270; 320; 370; 420; 470; 520; 620; 720; 820; 920; 1020; 1140; 1240; 1340; 1440; 1540; 1640; 1740; 1840; 1940; 2040; 2140; 2240; 2340; 2440; 2540; 2640; 2740; 2840; 2940; 3040; 3140; 3240 
(other intermenate lenghts on request)

Accuracy grades to any meter within the ML (at 20°C)

- for ML 170 to 2040 mm: ± 5; ±3; ±2 μm 
- for ML 2040 to 3240: ± 10 μm

Grating period

20 μm; 40 μm

Reference marks (RI)



 

- standard for ML ≤ 1020 mm: 35 mm from both ends of ML
- standard for ML > 1140 mm: 45 mm from both ends of ML
- optional: one RI at any location, or two or more RI’s separated by distances of n x 50 mm
- distance-coded: see drawing
- selection by magnets: standard - one magnet (RI) in ML middle

Max. traversing speed

 

- when interpolation factor is 1,2,5,10: 1 m/s (shortly 2m/s)
- when interpolation factor is 25: 0.5 m/s
- when interpolation factor is 50: 0.4 m/s

Required moving force with sealing lips

< 5 N

Protection (IEC 529)

- without compressed air: IP54
- with compressed air (optional): IP64

Weight

0.4 kg + 2.8 kg/m

Operating temperature

0...+50°C

Storage temperature

-20...+70°C

Permissible vibration (40 to 2000 Hz)

≤ 150 m/s²

Permissible shock (11 ms)

≤ 300 m/s²

Version

L35T-A ∫ µApp

L35-AV ∫ 1 Vpp

L35T-F Π TTL; Π HTL

Supply voltage

+ 5 V ± 5 % / < 90 mA

+ 5 V ± 5 % / < 90 mA

+ 5 V ± 5 % / < 120 mA; + 12 V ±5% / < 130 mA

Light source

LED

LED

LED

Resolution

Depends on external subdividing electronics

Depends on external subdividing electronics

5; 2.5; 1; 0.5; 0.2; 0.1 μm (after 4 - fold dividing in subsequent electronics)

Incremental signals

Two sinusoidal I₁ and I₂ 
Amplitude at 1 kΩ load:
- I₁ = 7 - 16 µA
- I₂ = 7 - 16 µA

Differential sine +A / -A and +B / -B
Amplitude at 120 kΩ load:
- A = 0.6 - 1.2 V
- B = 0.6 - 1.2 V

Differential square-wave U1 / U1and U2 / U2. Signal levels at 20 mA load current:
- low (logic "0") < 0.5 V at U_p = ±5V
- high (logic "1") > 2.4 V at U_p = ±5V
- low (logic "0") < 1.5 V at U_p = ±12V (HTL) 
- high (logic "1") > (U_p - 2)V at U_p = ±12V (HTL)

Reference signal

One quasi-triangular I₀ peek per revolution. Signal magnitude at 1 kΩ load:
- I₀ = 2 - 8 µA (usable component)

One quasi-triangular +R and its complementary -R per revolution. Signals magnitude at 120 Ω load:
- R = 0.2 - 0.8 V (usable component)

One differential square-wave U0 / U0 per revolution. Signal levels at 20 mA load current:
- low (logic "0") < 0.5 V at U_p = ±5V
- high (logic "1") > 2.4 V at U_p = ±5V
- low (logic "0") < 1.5 V at U_p = ±12V(HTL) 
- high (logic "1") > (U_p - 2)V at U_p = ±12V (HTL)

Maximum operating frequency

50 kHz (v=1 m/s)
100 kHz (v=2 m/s shortly), where k - interpolation factor

50 kHz (v=1 m/s)
100 kHz (v=2 m/s shortly)

(50xk) kHz for k = 1, 2, 5, 10
100 kHz for k = 25, 50

Direction of signals

I₂ lags I

+ B lags + A

U2 lags U1 (displacement from left to right and head position down respective glass scale)

Standard cable length

3 m; without connector

3 m; without connector

3 m; without connector

Maximum cable length

5 m

25 m

25 m