Specifications

LC 495 S

Measuring standard

Coefficient of linear expansion

DIADUR glass scale with absolute track and incremental track, grating period 20 µm

α_therm ≈ ? 8 x 10^-6 K^-1, (mounting type (I)/(II)); with mounting spar: α_therm ≈ ? 9 x 10^-6K^-1 (mounting type (III))

Accuracy grade*

± 3 µm; ± 5 µm

Measuring length ML* in mm

Mounting spar* or clamping elements* up to ML = 1240 optional, necessary as of ML 1340

70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 670, 720, 770, 820, 920, 1020, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040

Functional safety

For applications up to

• SIL 2 according to EN 61 508 (further basis for testing: EN 61 800-5-2)
• Category 3, PL “d” according to EN ISO 13 849-1:2008

PFH

≤ 15 x 10–9
For application height ≤ 6 000 m above sea level

≤ 25 x 10–9
For application height ≤ 1000 m above sea level

Safe position1)

Encoder: ± 550 µm (safety-related measuring step: SM = 220 µm)

Mechanical connection: fault exclusions for loosening of the housing and scanning unit (page 6)

Interface

EnDat 2.2

DRIVE-CLiQ

Ordering designation

EnDat 22

DQ 01

Resolution

Accuracy ± 3 µm: 0.001 µm, accuracy ± 5 µm: 0.010 µm

Calculation time tcal

Clock frequency

≤ 5 µs

≤ 16 MHz

–

–

Electrical connection

Separate adapter cable connectable to mounting block

Cable length

≤ 100 m (with HEIDENHAIN cable), 
clock frequency ≤ 8 MHz

≤ 30 m (longer cables on request)

Power supply

3.6 to 14 V DC

10 V to 28.8 V DC

Power consumption (max.)

At 14 V: ≤ 1.3 W; at 3.6 V: ≤ 1.1 W

At 10 V: ≤ 1.5 W; at 28.8 V: ≤ 1.7 W

Current consumption (typical)

At 5 V: 140 mA (without load)

At 24 V: 46 mA (without load)

Traversing speed

≤ 180 m/min

Required moving force

≤ 5 N

Vibration 55 to 2 000 Hz
affecting the

Shock 11 ms

Acceleration

Scanning unit: ≤ 200 m/s² (EN 60 068-2-6)

Housing without mounting spar: ≤ 100 m/s² (EN 60 068-2-6)

Housing with mounting spar and cable outlet at right: ≤ 150 m/s², at left: ≤ 100 m/s²(EN 60 068-2-6)

≤ 300 m/s² (EN 60 068-2-27)

≤ 100 m/s² in measuring direction

Operating temperature

0 °C to 50 °C

Protection EN 60 5292)

IP 53 when installed according to instructions in the brochure, IP 64 with sealing air from DA 400

Weight

Encoder: 0.2 kg + 0.55 kg/m measuring length; mounting spar: 0.9 kg/m

* Please select when ordering. 1) Further tolerances may occur in the subsequent electronics after the position value comparison (contact the manufacturer of the subsequent electronics). 2) In the application the LC must be protected from the intrusion of particles and liquids.