Linear Encoder L35 The precision sealed linear encoder L35 is used to convert linear displacements of key machine components into electrical signals containing information about the value and direction of the displacements.
Mechanical Data
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
Electrical Data
Version
L35-A ∫ 11µApp
L35-AV ∫ 1 Vpp
L35-F Π TTL; Π HTL
Supply voltage
+ 5 V ± 5 % / < 90 mA
+ 5 V ± 5 % / < 120 mA; + 12 V ±5% / < 130 mA
Light source
LED
Resolution
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 Up = ±5V - high (logic "1") > 2.4 V at Up = ±5V - low (logic "0") < 1.5 V at Up = ±12V (HTL) - high (logic "1") > (Up - 2)V at Up = ±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 Up = ±5V - high (logic "1") > 2.4 V at Up = ±5V - low (logic "0") < 1.5 V at Up = ±12V(HTL) - high (logic "1") > (Up - 2)V at Up = ±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
Maximum cable length
5 m
25 m