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HEIDENHAIN Incremental and Absolute scales for TNC and high accuracy applications 
 

HEIDENHAIN has a wide range of exposed and sealed linear encoders to suit any application - for different display steps, installation spaces and traverse lengths.

All HEIDENHAIN linear encoders are inspected before shipping for accuracy and proper function. They are calibrated for accuracy during traverse in both directions. The number of measuring positions is selected to determine very exactly not only the long-range error, but also the position error within one signal period.

The Inspection certificate confirms the specified system accuracy of each encoder. The LC, LF, LS 100 and LS 400 series of scales have a calibration chart that documents the position error over the measuring range and also states the measuring step and measuring uncertainty of the calibration.
Features:
Robust, vibration-resistant and durable
Sealed aluminium housing with flexible sealing lips to protect against ingress of coolant and swarf
Non-contact scanning process, virtually eliminating wear
Good reproducible thermal behavior

                         Below is a brief selection guide, for more detailed information please request the relevant catalogues via our feed back form.

                          Selection Guide for Exposed and Sealed Linear Encoders.

  Applications for sealed encoders Scale specification Accuracy Measuring Step Measuring length Interface Model
For very high repeatability, small signal period Slimline, steel scale +/-2µm +/-3µm  To 0.1µm 50mm to 1220mm ~ 1Vpp LF 481
For absolute position measurement Slimline, glass scale +/-3µm +/-5µm To 0.1µm 70mm to 1240mm

with mounting spar:

70mm to 2040mm

 EnDat and ~ 1Vpp LC 481
For NC machines TTL LS 476
~ 1Vpp LS 486
To 0.5µm TTL LS 477
~ 1Vpp LS 487
For simple applications +/- 10µm To 5µm 70mm to 1240mm TTL LS 323
For very high repeatability, small signal period, high vibration rating Full-size, steel scale +/-2µm +/-3µm  To 0.1µm 140mm to 3040mm ~ 1Vpp LF 183
For absolute position measurement  high vibration rating Full-size, glass scale +/-3µm +/-5µm EnDat and ~ 1Vpp LC 181
For NC machines To 0.5µm TTL LS 176
~ 1Vpp LS 186
For NC machines needing large measuring lengths  high vibration rating Full-size, steel scale +/-5µm To 0.1µm 440mm to 30,040mm LB 382
For simple applications Full-size, glass scale +/- 10µm To 5µm 170mm to 3040 TTL LS 623
For bending machines and press brakes,  mounting linear guide Full-size, glass scale 170mm to 920mm LS 629
For simple applications needing large measuring lengths Slimline, magnetic measuring principle +/- 100µm To 10µm 440mm to 28,040mm LIM 571
~ 1Vpp LIM 581
Applications for exposed encoders Scale specification Accuracy grades Recommended measuring step down to Measuring length Interface Model
LIP family scales for high accuracy applications Zerodur® glass ceramic (atherm = 0ppm/k) +/- 0.5µm (higher accuracy available on request) To 0.001µm (1nm) 70mm to 270mm(2.7in. to 10.6 in.) TTL LIP 372
~ 1Vpp LIP 382
Zerodur® glass ceramic (atherm = 0ppm/k)

or glass(atherm = 8ppm/k)

 +/- 0.5µm +/-1µm (higher accuracy available on request) To 0.005µm 10mm to 420mm(0.4in. to 16.5 in.) TTL LIP 471
~ 1Vpp LIP 481
Glass (atherm= 8ppm/k) +/-1µm To 0.05µm 70mm to 1440mm(2.7in. to 56 in.) TTL LIP 571
~ 1Vpp LIP 581
LIF family scales with small signal periods Glass (atherm= 8ppm/k) +/-3µm To 0.1µm 320mm to 3040mm(12.6in. to 120 in.) TTL LIF 171
~ 1Vpp LIF 181
LIDA 1** family for measuring lengths up to 30m and high traversing speeds Steel tape cemented in steel carrier +/-3µm +/-5µm To 0.1µm 220mm to 2040mm(8.6in. to 80 in.) TTL LIDA 171
~ 1Vpp LIDA 181
Steel tape +/-5µm To 0.1µm 140mm to 30,040mm(5.5in. to 100 ft) TTL LIDA 175
~ 1Vpp LIDA 185
+/-15µm To 0.1µm 240mm to 6040mm9.5in. to 237 in.) TTL LIDA 177
~ 1Vpp LIDA 187
LIDA 4** family for measuring lengths up to 30m, limited installation space and limit switches  Steel tape +/-5µm To 0.1µm 140mm to 30,040mm(5.5in. to 100 ft) TTL LIDA 475
~ 1Vpp LIDA 485
+/-15µm To 0.1µm 240mm to 6040mm9.5in. to 237 in.) TTL LIDA 477
~ 1Vpp LIDA 487
PP family is a two-coordinate encoder Glass (atherm= 8ppm/k) +/-2µm To 0.05µm 68mm x 68mm(2.7in. to 2.7 in.) TTL PP 271
  ~ 1Vpp PP 281

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