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

BML SF2-I2 _ _ -GZZZ - ZZZ5-...
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 lateral variant):
Mechanical tolerances
Z
(air gap sensor/magnetic tape)
Z
(air gap between sensor/magnetic
tape with cover strip)
Y (lateral offset)
Pitch
Yaw
Roll
1) Nominal value for maximum Y tolerance
Nominal value for minimal effect on measuring accuracy
2)
Tab. 4-4: Guide values
4.4.3

Measuring length

To ensure correct operation while maintaining the specified
system accuracy, the magnetic tape length must be
greater than the required measuring length and the sensor
head must be correctly positioned in relation to the
magnetic tape.
BML SF2-_ _ _ 1-... (longitudinal variant)
L1
Fig. 4-7: Measuring length and coverage areas sensor head to
magnetic tape (longitudinal variant)
Range Value
Coverage area 1 (L1) > 18.25 mm
Coverage area 2 (L3) > 1.75 mm
Measuring length Magnetic tape length – 20 mm
(maximum) (L2)
Tab. 4-5: Data for measuring length, longitudinal variant
www.balluff.com
No reference point function
BML SF2-_ _0_-...
or with pole-periodic reference point
function
BML SF2-_ _2_-...
Longitudinal Lateral variant
variant SF2-_ _ _2-...
SF2-_ _ _1-...
3 mm 2.5 mm
jjwwDE
With integrated reference sensor
BML SF2-_ _1_-...
Longitudinal
variant
SF2-_ _ _1-...
0.2 mm
0.5 mm / 0.2 mm
1)
0°
Code
L2
english
Lateral variant
SF2-_ _ _2-...
0 mm / –0.3 mm
2) 1) 2)
L3
15