The sealed linear encoder L18 is used to convert linear displacements of key machine components into electrical signals containing information about the value and direction of the displacement.
The encoder consists of a glass scale installed into a rigid hollow housing and a ball-bearing-guided reading head. To be able to work in harsh environments (lubricants and chips), the encoder has sealing lips.
Filtered air can be supplied into the housing of the encoder for extra protection.
The photoelectric unit of the reading head generates sinusoidal micro-current or TTL square-wave (standard RS422) output signals.
conection compatible with LS 803, LS 803D LS803 LS803D
L18-A-620-S-03-0-05/C12
It is necessary use additional gaskets because the cross section of housing and head are different.
Measuring lengths (ML), mm | 620 |
Accuracy grades to any meter within the ML (at 20°C) | 3 μm |
Grating period | 20 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 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) | IP53 |
Weight | 0.4 kg + 0.8 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 |
Version | L18-A ∫ 11 µApp |
Supply voltage | + 5 V ± 5 % |
Max. supply current (without load) | <90 |
Light source | LED |
Incremental signals | Two sinusoidal I1 and I2 Amplitude at 1 k Ω load: - I1 = 7 - 16 µA - I2 = 7 - 16 µA |
Reference signal | One quasi-triangular I0 peek per revolution. Signal magnitude at 1 k Ω load: - I0 = 2 - 8 µA (usable component) |
Maximum operating frequency | 50 kHz |
Direction of signals | I2 lags I1 for clockwise rotation (viewed from shaft side) |
Cable length | 5m |
Output signals |