LIDA Exposed Linear Scale

LIDA

LIDA incremental linear encoders use AURODUR steel scales with grating periods of 20 µm (LIDA 400) or 40 µm (LIDA 100) as measuring standard. The new LIDA models are relatively insensitive to scale contamination and unevenness of the mounting surface.

LIDA 400

Measuring lengths up to 30 m
High traversing speed
For limited installation space
Signal period 20 µm

	LIDA 475 LIDA 485	LIDA 477 LIDA 487
Measuring standard/ Grating period	AURODUR steel scale tape with AURODUR graduation 20 µm
Output signals	LIDA 475: TTL LIDA 485: 1 V_PP	LIDA 477: TTL LIDA 487: 1 V_PP
Signal periods	LIDA 475: 4 µm / 2 µm LIDA 485: 20 µm	LIDA 477: 4 µm / 2 µm LIDA 487: 20 µm
Accuracy grades	± 5 µm	± 15 µm
Recommended measuring steps	To 0.1 µm	To 0.1 µm
Max. traversing speed	Max. 480 m/min at -3dB cutoff frequency >200 kHz
Measuring lengths ML	140 to 30040 mm	240 to 6040 mm
Reference mark	One at midpoint of measuring length

LIDA 100

Measuring lengths up to 30 m
High traversing speed
Signal period 40 µm

	LIDA 171 LIDA 181	LIDA 175 LIDA 185	LIDA 177 LIDA 187
Measuring standard	AURODUR steel scale tape
Output signals	LIDA 171: TTL LIDA 181: 1 V_PP	LIDA 175: TTL LIDA 185: 1 V_PP	LIDA 177: TTL LIDA 187: 1 V_PP
Signal periods	40 µm LIDA 171: 4 µm	40 µm LIDA 175: 4 µm	40 µm LIDA 177: 4 µm
Accuracy grades	± 5 µm; ± 3 µm	± 5 µm	± 15 µm
Recommended measuring steps	1 µm to 0.1 µm LIDA 171: 1 µm	1 µm to 0.1 µm LIDA 175: 1 µm	1 µm to 0.1 µm LIDA 177: 1 µm
Measuring lengths ML	220 to 2040 mm	140 to 30040 mm	240 to 6040 mm
Reference mark	One, position selectable or distance-coded

LIDA 475, LIDA 485

For long measuring ranges up to 30 m
For measuring steps of 1 µm to 0.1 µm
Integral limit switches

LIDA 477, LIDA 487

For measuring ranges up to 6 m
For measuring steps of 1 µm to 0.1 µm
Integral limit switches
Large mounting tolerances

LIDA 171, LIDA 181

Heidenhain Exposed Linear Scale

LIDA 171: TTL LIDA 181: 1 V_PP

The AURODUR steel scale tape of the LIDA 171/LIDA 181 is cemented into a steel scale carrier and then calibrated. A calibration chart is supplied with every scale.

LIDA 175, LIDA 185

Heidenhain Exposed Linear Scale

LIDA 175: TTL LIDA 185: 1 V_PP

The LIDA 175/LIDA 185 is intended for larger measuring lengths up to 30 m (100 ft). Here the one-piece AURODUR steel scale tape is inserted into a scale housing consisting of several standard sections; it is then stretched to a defined tension and fixed at both ends to the machine bed.

LIDA 177, LIDA 187

Heidenhain Exposed Linear Scale

LIDA 177: TTL LIDA 187: 1 V_PP

The LIDA 177/LIDA 187 also consists of a one-piece steel tape. In this case, however, it is guided in a scale-tape carrier and is rigidly connected at its center to the machine. Measuring lengths up to 6 m (237 in.) are available.



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