LM15 linear magnetic encoder system

LM15 linear magnetic encoder system

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The LM15 features a compact sealed readhead that rides at up to 4 mm from the self-adhesive magnetic strip scale, which brings 100 m travel.

 

Simple to install, the LM15 features an integral set-up LED on the readhead, wide installation tolerances and an applicator tool for the adhesive-backed magnetic scale. A bidirectional reference is provided that can be actuated by a preset mark integrated within the scale or periodically every 5 mm.

 

The encoders come in digital output variants and offer a range of customer selectable resolutions 5 µm, 10 µm, 25 µm, 50 µm, 125 µm and 625 µm. The LM15 is capable of velocities up to 50 m/s; even at 25 µm resolution it is capable of more than 42 m/s.

 

Engineered for extreme service, the solid-state LM15 linear encoders operate from -10 °C to +80 °C, have water-proof sealing to IP68 and are highly resistant to shock, vibrations and pressure. The robust magnetic scale is also resistant to a range of chemicals commonly found in industry. The non-contact, frictionless design eliminates wear while reducing hysteresis for high precision at high speeds and acceleration.

 

The LM15 encoders bring reliable solutions to tough, hard-working applications including woodworking, stone-cutting, sawing, metalworking, textiles, packaging, plastics processing, automation and assembly systems, laser/flame/water-jet cutting, electronic assembly equipment etc.

 

For applications which demand that the MS scale can be removed easily please consider TRS track system.

All output types (IC and IB)
Maximum measuring length for MS scale 100 m (longer lengths available by special requirement)
Available resolutions 5 μm, 10 μm, 25 μm, 50 μm, 125 μm and 625 μm
Maximum speed

Resolution

(µm)

Interpolation factor

Maximum speed

(m/s)

5

1000

8.45

2.11

1.06

0.50

0.26

10

500

16.91

4.23

2.11

1.01

0.52

25

200

42.27

10.57

5.28

2.50

1.29

50

100

42.27

10.57

5.28

2.50

1.29

125

40

26.42

6.60

3.30

1.57

0.81

625

8

N/A

50.00

50.00

50.00

32.20

Edge separation (μs)

0.12

0.50

1

2

4

Count frequency (kHz)

8333

2000

1000

500

250

Precision class for MS scales ±100 μm/m
Linear expansion coefficient of MS scale ~ 17 × 10-6/K
Repeatability Better than unit of resolution for movement in the same direction
Hysteresis < 5 μm up to 1 mm ride height
< 15 μm up to 2 mm ride height
< 80 μm up to 4 mm ride height
Sub divisional error ±12.5 μm for < 1 mm ride height
±15 μm for 2 mm ride height
±20 μm for 4 mm ride height
LM15IB – Digital output signals, Open Collector NPN
Output signals A, B, Z
Reference signal 1 or more square-wave pulses Z
Maximum load 10 mA
Cable length

 

Maximum cable length 
(m)

Power supply voltage

5 V

12 V

24 V

30 V

Edge separation (µs)

0.12

3

2.5

1

1

0.5

10

7

4

3

1

10

10

9

6

2

10

10

10

10

4

10

10

10

10

RL (Ω)

500

1200

2400

3000

LM15IC – Digital output signals, RS422
Output signals 3 square-wave signals A, B, Z and their inverted signals A-, B-, Z-
Reference signal 1 or more square-wave pulse Z and its inverted pulse Z-
Signal level Differential line driver to EIA standard RS422:
UH ≥ 2.5 V at -IH = 20 mA
UL ≤ 0.5 V at IL = 20 mA
Permissible load Z0 ≥ 100 Ω between associated outputs
IL ≤ 20 mA max. load per output
Capacitive load ≤ 1000 pF
Outputs are protected against short circuit to 0 V and to +5 V
 Alarm High impedance on output lines A, B, A-, B-
Switching time (10 to 90 %) t+, t- < 30 ns (with 1 m cable and recommended input circuit)
Cable length max. 100 m
All output types (IC and IB)
Voltage drop over cable ~ 13 mV/m – without load
~ 54 mV/m – with 120 Ω load
Cable PUR high flexible cable, drag-chain compatible, double-shielded
8 × 0.05 mm2; durability: 20 million cycles at 20 mm bend radius
LM15IB – Digital output signals, Open Collector NPN
Power supply 5 V to 30 V
Power consumption < 35 mA
LM15IC – Digital output signals, RS422
Power supply 4.7 V to 7 V – voltage on readhead
Reverse polarity protection
Power consumption < 35 mA
All output types (IC and IB)
Mass Readhead (1 m cable, no connector) 57 g, Cable (1 m) 34 g
Magnetic scale (1 m) 60 g, Cover foil (1 m) 3.5 g
All output types (IC and IB)
Temperature

Operating -10 °C to +80 °C (cable under non-dynamic conditions: -20 °C to +85 °C)

Storage    -40 °C to +85 °C

Environmental sealing IP68 (according to IEC 60529)
EMC Immunity IEC 61000-6-2 (particularly: ESD: IEC 61000-4-2; EM fields: IEC 61000-4-3; Burst: IEC 61000-4-4; Surge:
IEC 61000-4-5; Conducted disturbances: IEC 61000-4-6; Power frequency magnet fields: IEC 61000-4-8;
Pulse magnetic fields: IEC 61000-4-9)
Vibrations (55 Hz to 2000 Hz) 300 m/s2 (IEC 60068-2-6)
Shocks (11 ms) 300 m/s2 (IEC 60068-2-27)

Features

  • Easy to install with wide installation tolerances
  • Ride height from 0.1 mm to 4 mm
  • Resolutions from 625 µm to 5 µm
  • High speed operation
  • Excellent dirt immunity
  • Integral set-up LED
  • Axis lengths of up to 100 m
  • Industry standard digital outputs
  • Bidirectional reference mark
  • TRS track system compatible
  • Distance coded reference mark compatible

Buy products by choosing the specifications

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Delivery time up to: 10 days

Total price:

$13.67

Availability: In stock

More than 10 pcs or need technical assistance? Contact for quote.