L18B Incremental Linear Encoder
L18B Linear Encoder Drawing

Incremental linear encoder

L18B

Optical linear encoder L18B is able to have the measuring length of up to 3.240 mm, maximum accuracy of ±5 µm to any meter within the ML, and grating periods of ±20 µm, ±40 µm.

Mechanical data

Measuring lengths (ML), mm 70; 120; 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 70 to 2040: ±10; ±5 μm (optional)
for ML 2040 to 3240: ±10 μm
Grating period 20 μm; 40 μm (optional)
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 or distance-coded
Max. traversing speed when interpolation factor is 1,2,5,10: 1 m/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 < 3 N
Protection (IEC 529) with compressed air: IP64
Weight 0.4 kg + 1 kg/m
Operating temperature 0…+50°C
Storage temperature -20…+70°C
Permissible vibration (40 to 2000 Hz) ≤ 30 m/s²
Permissible shock (11 ms) ≤ 100 m/s²

Electrical data

Version L18B-A ∫ µApp L18B-AV ∫ 1 Vpp L18B-F Π TTL
Supply voltage + 5 V ± 5 % + 5 V ± 5 %  + 5 V ± 5 %
Max. supply current (without load) 90 mA 120 mA 120 mA
Light source LED LED LED
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 / U1 and 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
Reference signal One quasi-triangular I0 peek per revolution. Signal magnitude at 1 kW load:
– I0 = 2 – 8 µA (usable component)		 One quasi-triangular +R and its complementary -R per revolution. Signals magnitude at 120 W 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
Maximum operating frequency 50 kHz 50 kHz 50 kHz, when interpolation factor is 1, 2, 5 ,10
1000 kHz, when interpolation factor is 25, 50
Direction of signals I2 lags I1 for clockwise rotation (viewed from shaft side) + B lags + A in clockwise rotation (viewed from shaft side) U2 lags with U1 in clockwise rotation (viewed from shaft side)
Maximum rise and fall time – – < 0.5 us
Standard cable length 3 m; without connector 3 m; without connector 3 m; without connector
Maximum cable length 5 m 25 m 25 m

Accessories

Downloads

Product Catalog
Encoder Selection Guide 2021
L18B Linear Encoder Datasheet
L18B Incremental Linear Encoder 2D Drawing
L18B Incremental Linear Encoder 3D Drawing

Order code

L18B – X1 – X2 – X3 – X4 – X5 – X6/X7

Output Signals and Resolution (X1) Measuring Length (X2) Reference Mark (X3) Accuracy (X4) Cable or Connector Outlet (X5) Cable Length (X6) Connector Type (X7)
A – Sinusoidal
AV – Sinusoidal
F01 – TTL 0.1um
F02 – TTL 0.2um
F05 – TTL 0.5 um
F10 – TTL 1.0um
F25 – TTL 2.5 um
F50 – TTL 5.0 um		 0070 – 70mm
0520 – 520mm
…
3240 – 3240mm		 N – none IR
S – standard
M – every 50 mm
K – distance coded
Ln/XXX – n`IR with 50-fold steps /XXX distance of the first IR from the begining of ML, mm		 05 – ±5 um
10 – ±10um		 S – version S (cable outlet)
C – version C (connector outlet)		 01 – 1m
02 – 2m
03 – 3m
…
CP01 – 1m armoured
CP02 – 2m armoured
CP03 – 3m armoured
…		 W – without connector
B12 – round, 12 pins
C9 – round, 9 pins
C12 – round, 12 pins
D9 – flat, 9 pins
D15 – flat, 15 pins
RS10 – round, 10 pins
ONC – round, 10 pins

ORDER EXAMPLE:

  1. L18B-F10-2440-S-05-C-CP03/W

Order form

    Check the "Order code" tab in the product page to see how to know your order code.