Magnet And Magnetic Sensor Mountings - YASKAWA VS-626M5 Instruction Manual

Magnetic Sensor Orientation Control
9.7

Magnet and Magnetic Sensor Mountings

9
The Magnet is mounted directly to the load shaft as shown in the following diagram. The Magnetic Sensor is
mounted to a part of the load shaft that does not rotate, but must be mounted so that the positioning of the center
of the Magnet agrees exactly with the center of the Magnetic Sensor.
Mounting Diagram
J
Mounting panel
(panel width 8 mm max.)
MG-1378BS Magnet
MG-1444S Magnet
Fig 9.12 Magnet and Magnetic Sensor Mounting Diagram 1
Mounting Dimensions
J
The mounting dimensions for the above diagram are shown in the following table.
Sign
R
L
∆L
and ∆S
∆S
1 2
δ
* 1. When specifying the radius of the rotating part mounted to the Magnet, consider the maxi-
mum speed tolerance of the Magnet.
* 2. The value of L is the recommended value. Adjust the gap to satisfy the value of ∆L.
* 3. When the mechanical central shaft (e.g., the spindle nose key in the machining center) has
been matched, make sure that the center misalignment of the Magnet and Magnetic Sensor,
as well as the standard of accuracy of the emitter mounting, have been satisfied. Make sure
the base surface is parallel to the tangent at the point where it crosses the circumference of
the rotating part mounted to the Magnet and the Magnet centerline.
Fig 9.13 Magnet and Magnetic Sensor Mounting Diagram 2
FSH-1378C
Magnetic Sensor
δ
nS
1
R
(a) MG-1378BS/FS-1378C
FS-200A Magnetic Sensor
δ
nS
1
R
(b) MG-1444S/FS-200A
Name MG-1378BS/FS-1378C
Radius of rotating part 60 to 70 mm
*1
mounted to the Magnet
Gap (between center of 6 mm (6 to 8 mm)
Magnet and Magnetic
*2
Sensor)
Gap (between tip of Mag- 1 to 2 mm
net and Magnetic Sen-
*2
sor)
Magnet and center of 0.5 mm max.
Magnetic Sensor are no
*3
longer aligned.
Angle of misalignment 0.2_ max.
*3
from base surface.
9 -10
nS
2
Magnetic Sensor
mounting panel
nS
2
MG-1444S/FS-200A
60 to 70 mm
5 mm (3 to 7 mm)
1 to 2 mm
0.5 mm max.
0.2_ max.