HEIDENHAIN LIP 21 Exposed Linear Encoder

Scale

LIP 201

Measuring standard

Coefficient of linear expansion

OPTODUR phase grating on Zerodur glass ceramic; grating period 2.048 µm

?therm = (0 ±0.1) · 10–6 K–1

Accuracy grade*

±1 µm

±3 µm (higher accuracy grades upon request)

Baseline error

? ±0.125 µm/5 mm

Measuring length (ML)*
in mm

20 30 50 70 120 170 220
270 320 370 420 470 520 570
620 670 720 770 820 870 920
970 1020

370 420 470 520 570 620 670 720 770 820 870 920 970 1020 1140 1240 1340 1440 1540 1640 1840 2040 2240 2440 2640 2840 3040

Reference marks

One at midpoint of measuring length

Mass

1.1 g + 0.11 g/mm measuring length

Scanning head

LIP 21

LIP 29 F

LIP 29 M

LIP 28

Interface

EnDat 2.21)

Fanuc Serial Interface1)

Mitsubishi high speed1)

  1 VPP

Ordering designation

EnDat22

Fanuc02

Mit02-4

–

Integrated interpolation

16384-fold (14 bits)

–

Clock frequency

? 16 MHz

–

–

Calculation time tcal

? 5 µs

–

–

Measuring step

0.03125 nm (31.25 pm)

–

Signal period

–

0.512 µm

Cutoff frequency –3 dB

–

? 3 MHz

Traversing speed

? 120 m/min

? 90 m/min

Interpolation error

RMS position noise

±0.4 nm4)

0.12 nm

±0.4 nm4)

0.12 nm (3 MHz3))

Electrical connection*

Cable, 0.5 m or 1 m (2 m and 3 m for 1 VPP), with interface electronics in the connector (15-pin D-sub (male))

Cable length

See interface description; however, ? 15 m (? 30 m at 1 VPP) with HEIDENHAIN cable;
during signal adjustment with the PWM 21: ? 3 m

Supply voltage

DC 3.6 V to 14 V

DC 5 V ±0.25 V

Power consumption2) (max.)

At 14 V: 2500 mW; at 3.6 V: 2600 mW

–

Current consumption

At 5 V: 300 mA (without load, typical)

? 390 mA

Laser

Scanning head and scale, mounted: class 1; scanning head not mounted: class 3B

Vibration 55 Hz to 2000 Hz

Shock 11 ms

? 200 m/s2 (IEC 60068-2-6)

? 400 m/s2 (IEC 60068-2-27)

Operating temperature

0 °C to 50 °C

Mass

Scanning head: 59 g; connector: 140 g; cable: 22 g/m

* Please select when ordering; for measuring lengths < 70 mm, the 'adhesively bonded” mounting type is recommended

1) Absolute position value in 'Position Value 2” after crossing the reference mark

2) See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure

3) –3 dB cutoff frequency of the subsequent electronics 4) With HEIDENHAIN interface electronics