Recommended Alignment Of Sensor Head To Magnetic Tape; Measuring Length - Balluff BML SF2-I2 -A- Z 5-KA Serie Betriebsanleitung

BML SF2-I2 _ _ -A/QZ _ _ - Z _ _ 5-...
Incremental magnetic encoder system
4
Installation and connection (continued)
4.4.2 Recommended alignment of sensor head to
magnetic tape
The values in Tab. 4-4 apply for the recommended
alignment (see Fig. 4-5 for longitudinal variant and Fig. 4-6
for transverse variant):
Mechanical tolerances
Z
(air gap sensor/magnetic tape)
Z
(air gap between sensor/magnetic
tape with cover strip)
Y (transverse offset)
Pitch
Yaw
Roll
1) Nominal value for maximum Y tolerance
Nominal value for minimal influence on measurement accuracy
2)
Tab. 4-4: Recommended alignment values
4.4.3

Measuring length

To ensure correct operation while maintaining the specified
system accuracy, the tape length must be greater than the
required measurement length and the sensor head must
be correctly positioned in relation to the tape.
BML SF2-_ _ _ 1-... (longitudinal variant)
Ü1
Fig. 4-7: Measurement length, overlap ranges of sensor head to
magnetic tape (longitudinal variant): Ü1 = overlap range 1,
Ü2 = overlap range 2
Range
Overlap range 1
Overlap range 2
Measurement length
(maximum)
Tab. 4-5: Data for measurement length, longitudinal variant
www.balluff.com
No reference point function
BML SF2-_ _0_-...
or with pole-periodic
reference point function
BML SF2-_ _2_-...
Longitudinal
variant
SF2-_ _ _1-...
3 mm
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Value
> 18.25 mm
> 1.75 mm
Magnetic tape length –
20 mm
With integrated reference sensor
Transverse Longitudinal
variant variant
SF2-_ _ _2-... SF2-_ _ _1-...
0.2 mm
2.5 mm 0.5 mm
0°
Code
Measuring length
BML SF2-_ _1_-...
Transverse
variant
SF2-_ _ _2-...
/ 0.2 mm 0 mm / –0.3 mm
1) 2) 1)
english
2)
Ü2
15