FANUC SERVO AMPLIFIER a series. DESCRIPTIONS (B-65162E/03)

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(4) Outline Drawing

(a) High-resolution magnetic pulse coder (Cs axis sensor)

Sensor

4- φ5.5, equally spaced

on φE circumference

Signal line 400 mm

Reference surface

Sensor

Magnetic drum

R20 or more

Resolu-

Sensor drawing No.

Detection ring

φA

φB

φE

tion

A860-0382-T121

Drum 1

360,000

140–0.015

70–0.011

191

130

15"0.2

+0.015

A860-0382-T122

Drum 2

360,000

170–0.015

110

-0.0

224

160

19"0.2

+0.015

A860-0382-T123

Drum 3

360,000

200–0.015

140

-0.0

256

190

19"0.2

+0.015

A860-0382-T124

Drum 4

360,000

270–0.015

210

-0.0

321

260

19"0.2

For the dimensions of the drums, see Item (b).

573

12. DETECTORS FOR THE SPINDLE

B-65162E/03

NOTE

- Use this sensor at temperatures not exceeding 50°C.

- The high-resolution magnetic pulse coder is equipped with a preamplifier.

- A sensor set consisting of a magnetic drum, sensor, and preamplifier is adjusted prior to

shipment, and the same serial number is stamped onto each of the components constituting

that set. When using this sensor, check the serial numbers to ensure that the sensor set does

not include a component having a different serial number. Moreover, never detach the sensor

from its mounting plate.

- This sensor consists of electronic circuits and includes many magnetic components. Never

expose the sensor to a magnetic field of 20 gauss or more. Be careful not to place the sensor

in a magnetic field. Never place a magnet or magnetized object near this sensor.

- Check the output signals of this sensor. For output signal adjustment, refer to Part II of the

”FANUC Built-in AC Spindle Motor α Series Descriptions (B-65202EN).”

574

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(b) Magnetic drum

6- φD, equally spaced

on φE circumference

Sensor drawing No.

Detection ring

φA

φB

φC

φD

φE

A860-0382-T121

Drum 1

64.05"0.01

65–0.015

50–0.011

---

A860-0382-T122

Drum 2

96.55"0.01

97.5–0.015

70^–0.015

5.5

+0.015

A860-0382-T123

Drum 3

129.05"0.01

130–0.015

105

-0.0

5.5

115

+0.015

A860-0382-T124

Drum 4

194.05"0.01

195–0.015

160

-0.0

6.5

175

For the outside dimensions of the sensor, see Item (a).

Maximum drum speed

Sensor drawing No.

T121

T122

T123

T124

Drum

Drum 1

Drum 2

Drum 3

Drum 4

Maximum speed (min^-1)

15,000

13,000

10,000

6,500

Drum material

SUS303

575

12. DETECTORS FOR THE SPINDLE

B-65162E/03

NOTE

- Use this preamplifier at temperatures not exceeding 50°C.

- This preamplifier is required when the high-resolution magnetic pulse coder is used.

- A sensor set consisting of a magnetic drum, sensor, and preamplifier is adjusted prior to

shipment, and the same serial number is stamped onto each of the components constituting

a set. When using this sensor, check the serial numbers to ensure that the sensor set does

not include a component having a different serial number. Moreover, never detach the sensor

from its mounting plate.

- Ensure that a vibration of no more than 1 G is applied to the preamplifier.

- The waterproofing of the preamplifier case satisfies IP55. However, if this preamplifier is

exposed to coolant, for example, at all times, or is always wet, it may fail. Be careful, therefore,

not to expose the preamplifier to coolant and so forth.

- Check the output signals of this sensor. For output signal adjustment, refer to Part II of the

”FANUC Built-in AC Spindle Motor α Series Descriptions (B-65202EN).”

576

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(5) Mounting the High-resolution Magnetic Pulse Coder

The high-resolution magnetic pulse coder is mounted on the rotation axis

of the spindle on the motor power line side. If the high-resolution

magnetic pulse coder is mounted incorrectly, the motor cannot be

controlled correctly. Mount the high-resolution magnetic pulse coder

correctly. In addition, mount a cover or attach a sheet to protect against

the ingress of foreign matter.

1 Mounting a magnetic drum

A860-0382-T122

Sensor

A860-0382-T121

A860-0382-T123

A860-0382-T124

Mount the drum by shrink fitting the drum or ex-

Secure the drum by installing screws in the 6-

pansion fitting the sleeve. For information

Mounting a drum

5.5 holes on the drum. Until centering is com-

about the fitting allowance for each speed, see

pleted, to not tighten the screws fully.

Item (5).5.

Mount the drum so that the reference surface of the drum faces the nose of the spindle. The

Drum mounting direction

reference surface of the drum is on the opposite side to the surface on which Z is printed.

NOTE

- Use a magnetic material for the motor housing to minimize magnetic leakage from the motor.

- Ensure that the motor housing is at least 15 mm thick at the sensor mounting section.

- After assembling the drum with the sleeve, mount the drum onto the spindle. Use a

configuration where the sleeve holds the drum on the motor side (left side in the figure above).

If this configuration is impossible, use a non-magnetic material (such as stainless steel) for the

sleeve.

- If a magnetic substance is placed at the back of the magnetic drum (on the right side in the figure

above), allow a clearance of 30 mm.

577

12. DETECTORS FOR THE SPINDLE

B-65162E/03

2 Flatness of the sensor mounting plane

The table below indicates the maximum allowable flatness values. Adjust

the flatness to satisfy these requirements.

Dial gauge

Shaft

Reference mounting surface

Sensor drawing No.

Maximum fluctuation (µm)

A860-0382-T121

A860-0382-T122

A860-0382-T123

A860-0382-T124

If the reference surface is inclined or is not flat, an abnormal signal may

be detected.

Inclined

Not flat

3 Fluctuation of the circumference of the drum

Ensure that the fluctuation of the circumference of the drum is within 15

µ m.

578

B-65162E/03

12. DETECTORS FOR THE SPINDLE

Dial gauge: 15µm or less

Surface on which Z is printed

Shaft

Drum reference surface

Magnetic drum

NOTE

When touching the cylindrical drum surface with a dial

gauge, touch an area within 5 mm of the surface on which

Z is printed. The other area on the drum surface holds

magnetic information, so that information may be lost if the

other area is touched with a dial gauge.

4 Fluctuation of the mounting plate socket and spigot joint

Ensure that the fluctuation of the mounting plate socket and spigot joint

is within 20 µ m with respect to the shaft.

Dial gauge: 20µm or less

Reference mounting

surface

Shaft

Surface on which Z is printed

Magnetic drum

579

12. DETECTORS FOR THE SPINDLE

B-65162E/03

5 Fitting allowance (A860-0382-T121)

The drum for the A860-0382-T121 is mounted by shrink fitting (or

expansion fitting of the shaft). (The other types of drums are mounted by

screwing. See Item (5).1 above.) The table below lists the fitting

allowances.

Maximum speed (min^-1)

Allowance (µm)

6000

φ26 to φ47

8000

φ27 to φ48

10000

φ27 to φ48

12000

φ28 to φ49

15000

φ30 to φ51

NOTE

- From the table above, select the allowance that matches the

maximum speed being used. If an incorrect allowance is

employed, idle rotation or deformation can result.

- The drum may be heated up to 100°C. Never heat the drum

to temperatures in excess of 100°C.

12.3.2

Magnetic Sensor (for

Orientation)

(1) Names and Drawing Numbers

Table.12.3.2 (a) Names and Drawing Numbers

Name

Drawing No.

Maximum speed

Shape

Not specified (standard)

A57L-0001-0037

12,000min^-1

Magnetic sensor N, NIP

A57L-0001-0037#N,#NIP

12,000min^-1

Magnetic sensor P, PIP

A57L-0001-0037#P,#PIP

12,000min^-1

Magnetic sensor Q, QIP

A57L-0001-0037#Q,#QIP

20,000min^-1

Inner diameter φ40

Magnetic sensor R, RIP

A57L-0001-0037#R,#RIP

20,000min^-1

Inner diameter φ50

Magnetic sensor S, SIP

A57L-0001-0037#S,#SIP

15,000min^-1

Inner diameter φ60

Magnetic sensor T, TIP

A57L-0001-0037#T,#TIP

15,000min^-1

Inner diameter φ70

Magnetic sensor U, UIP

A57L-0001-0037#U,#UIP

20,000min^-1

Magnetic sensor U1, U1IP

A57L-0001-0037#U1,#U1IP

15,000min^-1

Inner diameter φ80

Magnetic sensor U2, U2IP

A57L-0001-0037#U2,#U2IP

15,000min^-1

Inner diameter φ90

NOTE

With #*IP, the connector is waterproof.

The outer diameter of a cable usable with a waterproof connector is φ8.5 to φ9.7 (including

tolerance).

A waterproof connector, when fitted, satisfies IP64.

580

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(2)

Absolute Maximum Ratings

Table.12.3.2 (b) Absolute Maximum Ratings

Item

Specifications

Power supply voltage

0V to +18V

Operating temperature

0_C to +50_C

Humidity

30% to 90% RH (no condensation)

(3)

Electrical Specifications

Table.12.3.2 (b) Absolute Maximum Ratings

Item

Specifications

Power supply voltage

DC15V"5%

Current consumption

100mA or less

Table.12.3.2 (c) Electrical Specifications

Channel

Signal

CH 1

1/rev (MSA-MSB)

CH 2

1/rev (LSA-LSB)

(4)

Output Pin Configuration

Table.12.3.2 (d) Output Pin Configuration

Signal name

MSA

+15V

MSB

LSB

LSA

581

12. DETECTORS FOR THE SPINDLE

B-65162E/03

(5) Types of Magnets

Table.12.3.2 (e) Types of Magnets

Sensor

Item

Unit

Surface speed:

Maximum spindle speed

min^-1

3770/m/min or

20,000

15,000

less

33"

14.8"

315"

460"

770"

1000"

1540"

1700"

Magnet weight

100"3

1.5

0.7

Gap between magnet

1.0 to 2.0

and sensor (Note 1)

Displacement between

magnet center and sen-

0 to "2.0

sor center (Note 2)

Operating temperature

0 to 50

Applicable axis dimen-

---

40–0.025

50–0.025

60–0.025

70–0.025

80–0.025

90–0.025

sions

NOTE

Magnet

1 to 2 mm

If the distance from the center to the location where a magnet is installed is large, the maximum

speed is limited by centrifugal force.

The use of high-tensile screws is recommended for magnet installation.

582

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(6) Outline Drawing

1 Detection head

-L-

For standard

specification

TRC-116-12A-7M

12φ

6φ

18φ

36φ

20φ

4.5

For IP specification

TRC-116-9008P7M6.3

20φ

2 Detector

Detection head

IN receptacle

2-φ

5.4

Output receptacle

TRC-116-21A10-7F

TRC-116-21A10-7M

FANUC

MAGUNETIC SENSOR

A57L-0001-0037

40 50

MAKOME CORP.

583

12. DETECTORS FOR THE SPINDLE

B-65162E/03

3 Magnet

(1) Magnet for N

Reference

Mounting hole

hole

4-φ

4.3

1.0

7.5

4-C4

SPC:2.0t

SUS:0.5t

2.5

(2) Magnet for P

SUS:0.5t

7.5

SPC:2.0t

(3) Magnet for U

Reference hole

50-0.5

1.0

4-C1

–0.5

Mounting hole 4-φ4.5

SUS303

SPC:2.0t

φ8 counterboring depth 4

584

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(4) Magnet for Q, R, S, T, U1, and U2

Cover (SUS)

Bolt (4 pcs)

Shupan ring

Spindle

φA

φB

Detailed dimensions

φEH7

(Axis tolerance h6)

105

Case (SUS)

102

Distance to the

118

center of a

125

112

magnet

Magnetic sensor

Without a cover

With a cover

45k

Material for balancing

Arrow (stamped)

Magnet

2- 5φ through hole

Equally spaced on

φF circumference

Magnet reference line

585

12. DETECTORS FOR THE SPINDLE

B-65162E/03

(7) Notes on Use

D A Shupan ring (ring-feeder) is used in a magnet. So, tighten the four

bolts evenly.

Tighten the bolts in order from

À to Ã repeatedly, in stages.

D The reference hole and polarity of a magnet are related to each other

as shown below.

Reference hole φ1.0

D The two holes (φ5.0) on the side opposite the side on which magnetic

sensor Q, R, S, or T is installed with screws should be used for a jig

for orientation position setting.

586

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(8) Mounting a Magnetic Sensor

Fig.12.3.2 (a), (b), and (d) show how to mount a magnetic sensor.

Spindle (rotating body)

Mounting distance

H [mm]

60 to 110mm

Reference hole (upper)

7.5

Magnetic

Gap

L=6mm

(Standard)

1.0mm

φ18

Pin groove (upper)

2.0mm

Mounting plate

(not thicker than 8mm)

φ36

Magnetic sensor head

Metal socket

φ20.0

Magnetic sensor

amplifier

Fig.12.3.2 (a) Example of Mounting a Magnetic Sensor (1)

587

12. DETECTORS FOR THE SPINDLE

B-65162E/03

Distance H: 60 to 110 mm

Spindle (rotating body)

Magnet

Magnetic sensor head

Mounting plate

(not thicker than 8mm)

ΔL=10 to 20mm

L=8mm or less (Standard: 6mm)

Note) There must be a gap of 8mm

or more between the mounting plate

and magnet.

Fig.12.3.2 (b) Example of Mounting a Magnetic Sensor (2) (Mounting a Magnetic Sensor on a Cylinder)

Magnetic sensor head

Mounting plate

(not thicker than 8mm)

L=1 to 2mm

Distance H:

Center

Magnet

60 to 110mm

Inner side

Be careful not to allow iron

chips or powder to adhere

to this area.

Fig.12.3.2 (c) Example of Mounting a Magnetic Sensor (3) (Mounting a Magnetic Sensor on a Disk)

588

12. DETECTORS FOR THE SPINDLE

B-65162E/03

(9) Mounting Method

When a magnet is mounted on the spindle of a machine tool, the mounting

direction depends on the spindle configuration (belt or gear connection)

because of the polarity relationship with a magnetic sensor. When the

connection shown in the magnetic sensor interface is used, the relative

positions of the magnet reference hole and magnetic sensor pin groove

must be as shown below. Otherwise, forward and reverse rotations may

be repeated without stopping.

Magnet reference hole

Magnetic sensor

head pin groove

Rotation direction

Slit for fixing

If SFRA (forward rotation command) = 1, all spindle motors rotate

counterclockwise when viewed from the motor shaft. Align the magnet

reference hole with the magnetic sensor pin groove so that the rotation

direction shown above is achieved when the forward rotation command

is on.

590

B-65162E/03

12. DETECTORS FOR THE SPINDLE

(10) Notes on Mounting a Magnetic Sensor

(a)

A magnetic sensor is mounted on the rotation body of the spindle.

So, ensure that a magnet is not dislodged by centrifugal force. The

surface speed of a magnet should not exceed 3770 m/min. (N and P

types)

(b)

Mount a magnetic sensor amplifier as close to the sensor as possible.

(c)

Never allow a magnetic substance to come close to the magnetic

sensor.

(Otherwise, the stop position may change.) In particular,

never place a magnetic device such as a solenoid near the magnet.

(d)

Be careful not to allow iron chips or powder to adhere to the magnet.

(e)

If the spindle contains a circuit such as a magnetic clutch for high/low

switching that forms a magnetic loop, mount a magnet on a

non-magnetic (such as aluminum) plate. The magnetic flux of the

magnet at a stop position is zero. However, if the magnetic loop of

a magnetic clutch has an influence, a magnetic flux is always applied

when the magnetic clutch is on. Note that if the magnetic clutch is

turned on and off at a stop position, the stable magnetic flux changes,

thus causing the stop position to change.

(f)

Pay careful attention to the configuration so that the cable side of the

magnetic sensor head, magnetic sensor amplifier, and connection

cables are not exposed to lubricant or coolant.

(g)

Mount the magnet of a magnetic sensor directly on the spindle. If a

magnet is mounted by means of a gear connection or spline

connection, the repeatability degrades, depending on the amount of

backlash between the spindle and magnet.

For improved

repeatability, also consider deterioration with age

(such as

mechanical wear).

591

12. DETECTORS FOR THE SPINDLE

B-65162E/03

[Mounting example 5]

Screw fastening direction

Polarity indication

Magnet

N S

AC SPINDLE

MOTOR

Magnetic sensor

head pin groove

CCW

Belt connection

CCW

[Mounting example 6]

Screw fastening direction

Polarity indication

Magnet

N S

AC SPINDLE

MOTOR

Magnetic sensor

head pin groove

CCW

Gear connection

CCW

594

A. FITTING A LIGHTNING SURGE

B-65162E/03

APPENDIX

PROTECTION DEVICE

A.1

INSTALLATION

A.1.1

200V Power Supply

Line-to-ground lightning

surge protector

(R A V-781BXZ-4)

Line-to-line lightning

surge protector

(R A V-781BYZ-2)

To other units

(a)

(b)

To SPM/SVM

Control

Circuit breaker 2

power

Grounding plate

(5A)

supply input

Main circuit power

supply input

Ground fault inter-

Circuit breaker 1

Magnetic

AC reactor

rupter for boards

contactor

597

A. FITTING A LIGHTNING SURGE

PROTECTION DEVICE

APPENDIX

B-65162E/03

A.1.2

400V Power Supply

Control power

supply input

Voltage-reducing

Circuit breaker 2

transformer

AC400V/460V

→AC200V/s30V

Main circuit

power supply

input

Ground fault

Circuit breaker 1

Magnetic

AC reactor

interrupter for

contactor

boards

To built-in fan motor

of spindle motor

Grounding

Power supply

plate

Circuit breaker 3

(a)

(Y connection neu-

(5A)

tral point grounding)

Line-to-line lightning

AC400V/460V

surge protector

(R A V-152BYZ-2A)

Line-to-ground lightning

surge protector

(b)

(R A V-801BXZ-4)

598

A. FITTING A LIGHTNING SURGE

B-65162E/03

APPENDIX

PROTECTION DEVICE

A.2

D To increase the efficiency of lightning surge absorption, the wires

NOTES

indicated by bold lines should be as short as possible.

Wire cross-sectional area:

2 mm² or more

Wire length:

The total length of the cables used for lightning surge protection

device 1 (a) and that used for lightning surge protection device 2

(b) must not exceed 2 m.

D When performing a dielectric strength test by applying an overvoltage

to the power line, lightning surge protection device 2 must be removed

to enable the applied voltage to be maintained.

D The circuit protector (5 A) works for line protection when the lightning

surge absorber is short-circuited because of a surge higher than its

rating being applied.

D Because current does not flow through the lightning surge absorber 1

nor 2 in a normal state, the circuit protector (5 A) can be used together

with the surge absorbers as well as with other equipment. It can be

connected to the power supply for power supply module control or

spindle motor fans.

D Use Y connection neutral point grounding for the 400 V power

supply. It cannot be used for the Δ connection 400/460 VAC line.

599

B. SUMMARY OF AMPLIFIER

CONNECTORS

APPENDIX

B-65162E/03

SUMMARY OF AMP CONNECTORS

Power supply module

Spindle amplifier module

Servo amplifier module

CX1A

CX1B

CX1A

CX1B

(LEFT)

(RIGHT)

(LEFT)

(RIGHT)

(3)

(2)

Cable

200S

(1)

200R

350/X

CX2A

CX2B

CX2A

CX2B

CX2A

CX2B

CX2A

CX2B

(LEFT)

(RIGHT)

(LEFT)

(RIGHT)

(LEFT)

(RIGHT)

(LEFT)

(RIGHT)

(3)

ESP

(2)

Cable

(1)

+24V

250/X

CX3

CX4

(LEFT)

(RIGHT)

(3)

MCCOFF3

+24V

Cable

(2)

Cable

ESP

(1)

MCCOFF4

350/Y

350/X

PCB

NOTE

Details such as connector locations may be changed without notice.

600

B-65162E/03

APPENDIX

C. CABLES

CABLES

This appendix describes the cables used for the

20-pin interface

connectors.

The cables are basically the same as those used for the FS16/18 (except

those that have been newly developed).

The table below lists the cables we have developed for interface

connectors. Contact the manufacturers as required.

Configura-

Manufactur-

Manufacturer

Cable name

Purpose

FANUC specification

tion

specification

For motor thermostat

0.3mm

Hitachi

CO-IREV (0)-SX

2-core cable

A66L-0001-0275

of αC series

2 wires

Cable, Ltd

0.3SQ

Hitachi

UL20276-SB(0)

Cable, Ltd.

10PX28AWG(7/0.127)

0.09 mm²

10-pair cable

For general use

A66L-0001-0284#10P

10 pairs

Oki Electric

Cable Co.,

7/0.127 10P VX10-SV

Ltd.

Hitachi

F-CO-VV(0)-SB

0.5 mm

Cable, Ltd.

6X0.5SQ+3PX0.18SQ

Composite

For pulse coder

6 cables

12-core

For magnetic sensor

A66L-0001-0286

0.18 mm

Oki Electric

cable

For position coder

MIX12C(7/0.18,

3 pairs

Cable Co.,

20/0.18)HRS-SV

Ltd.

Shinko Elec-

For high-resolution

0.18 mm

10-pair cable

A66L-0001-0367

tric Industries

FNC-019

magnetic pulse coder

10 pairs

Co., Ltd.

For pulse generator,

MZ sensor,

0.5 mm

Composite

Shinko Elec-

BZ sensor

6 cables

16-core

A66L-0001-0368

tric Industries

FNC-021

For built-in sensor

0.18 mm

cable

Co., Ltd.

For high-resolution

5 pairs

position coder

601

C. CABLES

APPENDIX

B-65162E/03

2-core cable

D Specifications

Item

Unit

Specifications

Product No.

A66L-0001-0275

(CO-IREV

(0)

–SX 1P

0.3SQ

Manufacturer

Hitachi Electric Cable Co., Ltd.

Rating

80_C, 30V

Material

Conductor

Stranded wire of tinned annealed

copper

Insulator

Irradiation Crosslinking Poliethylene

Shield braid

Aluminum laminate poliestel tape is

binded on both sides

Sheath

Oilproof, heat-resistant vinyl

Number of wires (wire ons.)

Cores

Conduc-

Size

mm²

0.3

tor

Structure

Conduc-

7/0.26

tors

/mm

Outside diameter

0.78

Insulator

Standard thickness

0.3

Outside diameter

About 1.38

Twisted

Outside diameter

About 2.8

pair

Strand

Outside diameter

Lay diameter

About 3.5

Shield

Element wire diameter

Sheath

Color

Black

Thickness

About 1.0

Outside diameter

About 5.0 (Max. 5.5)

Electrical

Resistance of conductor

Ω/km

Less than 54 (20°C)

perfor-

Dielectric strength (AC)

V/min.

AC1500

mance

Insulation resistance

MΩ-km

More than 1000 (20°C)

D Specifications

Drain wire

Conductor

Lay

Wire No.

color

Insulation

Red

Shield

Black

Sheath

602

FANUC SERVO AMPLIFIER a series. DESCRIPTIONS (B-65162E/03) - page 20