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Photoelectric linear encoder L18T does not vary much from L18 series and retains almost identical parameters. However, it has a different housing fixation and more stable thermal behaviour.
Technical data
| 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 intermediate lengths on request) |
| Accuracy grades to any metre within the ML (at 20°C): | ±10; ±5; ±10 μm |
| Grating period | 20 μm; 40 μm (optional) |
| Reference marks (RI): -standard for ML < 1020 mm -standard for ML > 1140 mm -optional | 35mm from both ends of ML 45mm from both ends of ML 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 -when interpolation factor is 25 -when interpolation factor is 50 | 1 m/s 0.5 m/s 0.4 m/s |
| Required moving force with sealing lips | <3 N |
| Protection (IEC 529) -without compressed air -with compressed air (optional) | IP53 IP64 |
| Weight | 0.4 kg + 1.0 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 |