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FX-3R Maintenance Guide 1-5 1-2. Replacing the Limit Sensor and Origin Near Sensor (1) When replacing only the sensor, it is not necessary to adjust the position. (2) When replacing the sensor together with the bracket, …
FX-3R Maintenance Guide
1-4
1-1-3. Clearance of the Magnescale
(1) Loosen the screws fixing the sensor and put the clearance jig with a thickness of 0.25 mm in
the clearance between the magnescale and sensor head.
(2) Tighten the set screws of the sensor head to remove the clearance jig with a thickness of
0.25±0.1 mm.
0.25±0.1mm
Figure 1-1-3-1 X-Axis Side
0.25 ± 0.1 mm
0.25 ± 0.1 mm
Y-frame C
Y-frame S
Figure 1-1-3-2 Y-Axis Side
1-1-4. Re-obtaining the Parameters after Replacement of the Magnescale
Follow the work steps stated in section 2.3, Y Setup of the MS parameters to obtain the offset
amount of the right origin position to the left origin position.
Make the correction so that the machine status becomes the factory-settings.
∗ “Y Setup” operation is performed based on the preconditions that the mechanical squareness
has been adjusted completely.
If the mechanical squareness deviates, it is necessary to adjust the mechanical squareness.
(See “X/Y Unit” in the QA Table.)
Rev. 1.00
FX-3R Maintenance Guide
1-5
1-2. Replacing the Limit Sensor and Origin Near Sensor
(1) When replacing only the sensor, it is not necessary to adjust the position.
(2) When replacing the sensor together with the bracket, it is necessary to adjust the position.
∗ The home position of the X-axis is the Z-phase of the magnescale. Therefore, there is no home
position sensor for the X-axis.
1-2-1. Replacing the X+/− Limit Sensor and X-Near Sensor
X NEAR SENSOR X +LIMIT SENSOR
(X -LIMIT SENSOR is located on
the right of the X-axis.)
Figure 1-2-1-1 Adjusting the Sensors on the X-Axis
(1) When the distance between each rubber stopper and the XM base A (or B) becomes 5 mm,
make the adjustment so that each limit sensor is turned ON, and then secure each limit sensor
with the screws.
Rev. 1.00
FX-3R Maintenance Guide
1-6
1-2-2. Replacing the Y +Limit Sensor and YB-Near Sensor
(1) When the distance between each rubber stopper and the Y linear base becomes 5 mm, make
the adjustment so that each limit sensor is turned ON, and then secure each limit sensor with
the screws.
YB NEAR SENSOR
Y LINEAR BASE
Y +LIMIT SENSOR
(Since two X-beams are provided on
the Y-axis, Y +LIMIT SENSOR is
mounted at two locations.)
RUBBER STOPPER
Figure 1-2-2-1 Replacing the Y +Limit Sensor and YB-Near Sensor
Rev. 1.00