Datasheet

501
1
2
www.kuebler.com© Fritz Kübler GmbH, subject to errors and changes. 03/2017
Linear measuring technology
1) If power supply correctly applied.
2) Only one channel allowed to be shorted-out.
If +V = 5 V, short-circuit to channel, 0 V, or +V is permitted.
If +V = 5 ... 30 V, short-circuit to channel or 0 V is permitted.
3) At every pole change. The signal is generated by the sensor.
4) At the listed rotational speed the min. pulse edge interval is 1 µs, this corresponds to 250 kHz.
For the max. rotational speed range a counter with a count input frequency of not less then
250 kHz should be provided.
Sensor head Limes LI20
Technical data
Output circuit Push-pull RS422
Power supply 4.8 ... 30 V DC 4.8 ... 26 V DC
Permissible load / channel ±20 mA 120 Ω
Max. cable length max. 30 m [98.43‘] RS422 standard
Power consumption typ. 25 mA, max. 60 mA
(no load)
Short circuit proof
1)
yes yes
2)
Min. pulse edge interval 1 µs (corresponds to 4 µs/cycle see signal figures below)
Output signal A, , B, , 0,
Reference signal index periodical
3)
Accuracy
System accuracy: typ. +200 µm, max. ± (0.04 + 0.02 x L) mm
(L in [m], up to L = 70 m, at T = 20°C [+68°F] and
gap sensor head/magnetic band = 0.4 mm)
Repeat accuracy ±1 increment
Resolution and 100 µm (quadruple), max. 25 m/s
speed
4)
25 µm (quadruple), max. 4 m/s
10 µm (quadruple), max. 6.5 m/s
Permissible alignment tolerance (see draft „mounting tolerances“)
Gap sensor head / 0.1 ... 1.0 mm, recommended 0.4 mm
magnetic band
Offset max. ±1 mm
Tilting max. 3°
Torsion max. 3°
General data
Working temperature -20°C ... +80°C [-4°F ... +176°F]
Shock resistance 5000 m/s
2
, 1 ms
Vibration resistance 300 m/s
2
, 10 ... 2000 Hz
Protection model 1 IP67 acc. to EN 60529
model 2 IP68 / IP69k acc. to EN 60529 and humidity tested
acc. to EN 60068-3-38, EN 60068-3-78
Housing aluminum
Cable 2 m [6.56‘] PUR 8 x 0.14 mm
2
[AWG25]
shielded, may be used in trailing cable installations
Status LED green pulse-index
red error; speed too high or magnetic fields too weak
(8.LI20.XXXX.X020 and 8.LI20.XXXX.X050)
CE compliant acc. to EMC guideline 2014/30/EU
RoHS guideline 2011/65/EU
Magnetic band Limes B1
Pole gap 2 mm from pole to pole
Dimensions width 10 mm
thickness 1.97 mm incl. masking tape
Temperature coefficient 16 x 10
-6
/K
Working temperature -20°C ... +80°C [-4°F ... +176°F]
-20°C ... +65°C [-4°F ... +144°F]
(when mounted solely with adhesive tape)
Storage temperature -20°C ... +80°C [-4°F ... +176°F]
Mounting adhesive joint
Measuring 0.1 m (to receive an optimal result of measure-
ment, the magnetic band should be ca. 0.1 m
longer than the desired measuring length)
Bending radius ≥ 150 mm
(when mounted solely with adhesive tape)
Material metal tape precision steel strip 1.4404 acc. to EN 10088-3
Signal figures
1
Pulse edge interval:
Pay attention to the
instructions in the
technical data
2
Periodic index signal
every 2 mm [0.08“] ;
the logical assignment A, B
and 0-signal can change
Function principle
Linear measuring technology
Accessories / display type 572 Order no.
Position display, 6-digit
Position display, 8-digit
with 4 fast switch outputs
and serial interface 6.572.0116.D05
with 4 fast switch outputs, serial interface and
scalable analog output 6.572.0116.D95
with 4 fast switch outputs
and serial interface 6.572.0118.D05
with 4 fast switch outputs, serial interface and
scalable analog output 6.572.0118.D95
Further accessories can be found in the accessories section or in the accessories area of our website at: www.kuebler.com/accessories.
Additional connectors can be found in the connection technology section or in the connection technology area of our website at: www.kuebler.com/connection_technology.
Resolution min. 10 μm
Incremental magnetic measurement system
sensor head, magnetic band Limes LI20 / B1