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FX-3R Maintenance Guide 2-10 2-3. Replacing the Laser Sensor (LNC60) After the LNC60 has been replaced, it is absolutely necessa ry to re-input the MS parameters related to the laser. (See section 2-7.) 1) Disconnect the…

FX-3R Maintenance Guide

2-9

2-2-2. Replacing the θ-Motor

After the θ-motor has been replaced, it is absolutely necessary to re-input the MS parameters

related to the axis home. (For details of input items, see section 2-7.)

1) Disconnect the motor cables from the

servo amplifier board.

(See also steps 2), 3), 8), 9), and 10)

stated in section 2-1.)

Rev. 1.00

2) Loosen the set screws c (hollow set

screws (×1)) of the T pulley.

3) Remove the motor mounting screws d

(SEMS cap bolts (×4)) and pull out the

pulley to detach it.

4) Remove the flat head screws e (×2)

and detach the TM flange.

5) Reassemble the components in the

reverse order of disassembly.

∗ Apply Loctite 242 to the flat head

screws e and tighten them with a

tightening torque of 0.14 N･m.

c SM8030312TP

Set screw M3 L=3

40044533

Servomotor 10W (θ-axis)

SM1020501SC

Flat head screws M2 L=5

6) Follow the steps below to adjust the belt

tension.

c Make a ring using a tie-up band or belt at the top end

of the T pulley of the θ-motor. Hang the bar tension on

this ring. With the bar tension kept pulled with a force

of 12.7N (1.3kgf), secure the T pulley using the

mounting screws.

Tension meter set value (For check)

• Tension meter input value

Weight: 0.9g/m Width: 4.0mm Span: 38.2mm

• Specification value: 6.5±1N

∗ Apply Loctite 242 to the θ-motor mounting screws (2

pcs.) and tighten them with a tightening torque of 2.3

N･m.

∗ When tightening the setscrew of the T pulley, make

sure to align the orientation of the flat part of the

θ-motor shaft and the setscrew of the pulley. Tighten

the setscrew with a torque of 0.5 N･m.

Timing belt T

Pull by the

force of 12.7N

(1.3kgf)

Figure 2-2-2-2 Adjustment of

the θ-motor Belt

Tension

Assemble so that the clearance

between the T pulley and TM nut

plate is 0.3 mm.

d SL6030842TN

SEMS cap bolt with

washer M3×8

Figure 2-2-2-1 θ-motor

FX-3R Maintenance Guide

2-10

2-3. Replacing the Laser Sensor (LNC60)

After the LNC60 has been replaced, it is absolutely necessary to re-input the MS parameters related

to the laser. (See section 2-7.)

1) Disconnect the connectors (encoder and

IEEE1394) and remove the mounting screws

c and d (3 pcs.) to detach the LNC60.

Rev. 1.00

2) Reassemble the components in the reverse

order of disassembly.

∗ Before mounting the components, remove

Loctite sticking to the sensor bracket as much as

possible.

∗ When attaching the sensor, insert the sensor pin

into the positioning hole of the bracket first. Then

fix the sensor.

∗ Apply Loctite 242 to the sensor mounting screws

c and d and tighten them with a tightening

torque of 2.6 N･m.

∗ After the LNC60 has been replaced, clean the

laser beam window of the LNC60 with a clean

cloth rag.

c SL6041692TN

SEMS cap bolt with

washer M4×16

d SM6041402TN

SEMS cap bolt M4×14

40045547

LNC60

Figure 2-3-1 Laser Sensor

Assembling Position

FX-3R Maintenance Guide

2-11

2-4. Replacing the Head Up Cylinder

Rev. 1.00

1) Turn the finger valve to stop the air supply

and disconnect the air tubes.

2) Remove the head up springs from both

ends, and then remove the nut from the

top end of the air cylinder to detach the

release bar. (Pay special attention so that

the wave washer is not lost.)

3) Remove the cap bolts c (×2) securing the

air cylinder to detach the air cylinder.

(When replacing only the nozzle down

sensor, it is not necessary to detach the

air cylinder.)

4) Remove the cap bolts (×2) securing the

nozzle down sensor bracket to detach the

nozzle down sensor together with the

bracket.

(If the nozzle down sensor needs to be

replaced:)

5) When mounting the air cylinder, adjust the

end face so that it is in parallel to the

cylinder mount and secure them.

Figure 2-4-1 Head-up Cylinder Adjustment

Position

2mm

Nozzle down sensor

c SM6033002TN

SEMS cap bolt M3×30

40046524

Air cylinder

Release bar

PC0105080000

Speed controller

Nozzle down sensor

Figure 2-4-2 Mounting of Nozzle

Down Sensor

6) Mount the nozzle down sensor.

Adjust the nozzle down sensor bracket

position so that the clearance between

the sensor and release bar is 2 mm.

7) If the speed controller has also been

replaced, it is necessary to carry out the

adjustment before mounting the release

bar.

c Call up the MS parameters from the top menu and select [Simple Control] → [MSP] tab in

the function bar. In this status, press the emergency stop button.

d Select [nozzle up cylinder] and turn ON or OFF the cylinder to adjust the displayed time

(msec.) to the specification value. Adjust the time by turning the knob of the speed controller.

Specification value: Air cylinder down time…140±5 msec.

(The difference between the left and right is 5 msec. or less.)

e After the adjustment has been completed, secure the knob firmly.

(8) Insert the release bar into the rod of the cylinder, put the wave washer, and turn the release bar

until the cylinder nut is stopped.

(At this time, it is not necessary to adjust the speed controller and MS parameter.)

∗ Manually operate the solenoid valve to check that the release bar moves up or down

smoothly.