FANUC Series 16i / 18i / 160i / 180i - Model A. Maintenance Manual (B-63005EN/01)

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

D Displayed parameters

The displayed parameters vary depending on the operation mode.

Spindle position-

Normal

Orientation

Synchronization

Rigid tapping

Cs contour

ing control

operation

control

Proportional gain

Integral gain

Loop gain

Motor voltage

Loop gain

Motor voltage

Regenerative power

Motor voltage

ZRN gain (%)

ORAR gain (%)

Acceleration/deceleration

ZRN gain

ZRN gain (%)

Shift reference position

Shift spindle stop position

constant (%)

Shift reference position

Note) For the parameter numbers corresponding to the displayed

parameter items, see Section 6.4.5.

D Displayed monitoring

The displayed monitoring items vary depending on the operation mode.

items

Spindle position-

Normal

Orientation

Synchronization

Rigid tapping

Cs contour

ing control

operation

control

Motor speed

Feedrate

Spindle speed

Position deviation S1

Position deviation S2

Position deviation Z

Synchronous deviation

Note 1)

|Spindle data|

Motor speed [rpm] +

Max. Motor speed.(* 1)

16383

(*1) Parameter 4020: Main spindleParameter 4196: Subspindle

Note 2) The spindle speed in Cs contour control mode is in degrees/min.

290

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.1.2.4

Spindle monitor screen

SPINDLE MONITOR SCREEN

ALARM

: AL-27(POSITION CODER DIS.)

OPERATION

: Cs AXIS OONTROL

SPINDLE SPEED : 100 DEG/MIN

MOTOR SPEED

: 150 RPM

100

150

200

LOAD METER (%)

JJJJJ

CONTROL INPUT : ORCM MRDY *ESP

CONTROL OUTPUT : SST SDT ORAR

D Spindle alarm

1: Motor overheated

2: Speed deviation excessive

3: Fuse blow of DC link

4: Fuse blow of AC inputline

5: Fuse blow of DC voltage

7: Excessive speed

9: Heat sink overheat

10: Low voltage of AC input

11: Excess voltage in DC link

12: Excess current in DC link

13: CPU internal data memory error

18: ROM SUM check error

19: U phase current offset excessive

20: V phase current offset excessive

24: Serial data transmission abnormal

25: Serial data transmission stop

26: Cs axis speed detecting signal failure

27: Position coder signal disconnection

28: Cs pos.detect signal disconnection

29: Short time overload

30: Input circuit excess current

31: Speed detecting signal disconnection

32: SLC LSI internal RAM abnormal

33: DC link charging insufficient

34: Parameter abnormal setting

35: Gear ratio data excessive

36: Error counter overflow

37: Speed detecting unit error setting

38: Magnetic sensor signal abnormal

39: Alarm of one revolution signal for Cs axis control is detected

40: Alarm of one revolution signal for Cs axis control is not detected

41: Erroneous detection of the position coder one revolution signal

42: Undetection of the position coder one revolution signal

46: Erroneous detection of the position coder one revolution signal on

threading

47: Abnormal position coder signal

48: Erroneous detection of position coder one revolution signal

291

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

D Operation

Following 6 modes are available:

a. Normal operation

b. Orientation

c. Synchronous operation

d. Rigid tapping

e. Cs contour cotrol

f. Spindle positioning control

D Load meter

The load meter displays spindle load in a unit of 10%.

1) Load meter[%] +^{Loadmeterdata}

Max.output value

3276

of load meter (*)

(*) PRM 4127: Main

PRM 4274: Sub.

D Control input signal

Max.10 signals those are ON are displayed from the following signals:

TLML

: Torque limit command (low)

SPSL

: Spindle selection signal

TLMH

: Torque limit command (high)

MCFN

: Power line switching

CTH1

: Gear signal 1

SOCN

: Soft start/stop cancel

CTH2

: Gear signal 2

RSL

: Output switching request

SRV

: Spindle reverse rotation

RCH

: Power line state confirm

SFR

: Spindle forward rotation

INDX

: Orientation stop pos.

ORCM

: Spindle orientation

change

MEDY

: Machine ready

ROTA

: Rotation direction of

ARST

: Alarm reset signal

ORCM

*ESP

: Emergency stop

NRRO

: Shor-cut of ORCM

INTG

: Speed integral control

signal

DEFM

: Referencial mode

command

D Control output signals

Max. 10 signals those are ON are displayed from the following signals:

ALM

: Alarm signal

TML5

: Torque limitation

SST

: Speed zero signal

ORAR : Orientation end signal

SDT

: Speed detecting signal

CHP

: Power line switched signal

SAR

: Speed arrival signal

CFIN

: Spindle switch complete

LDT1

: Load detecting signal 1

RCHP

: Output switch signal

LDT2

: Load detecting signal 2

RCFN

: Output switch complete

signal

292

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.1.2.5

Correspondence

between operation mode

and parameters on

spindle tuning screen

D Normal operation mode

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4040

4206

4040

4206

Proportional gain (LOW)

4041

4207

4041

4207

Integral gain(HIGH)

4048

4212

Integral gain(LOW)

4049

Motor voltage

4083

4236

4083

4236

Regenerative power

4080

4231

4080

4231

D Orientation mode

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4042

4208

4042

4208

Proportional gain (LOW)

4043

4209

4043

4209

Integral gain(HIGH)

4050

4213

Integral gain(LOW)

4051

Loop gain (HIGH)

4060

4218

Loop gain (MID, HIGH)

4061

Loop gain (MID, LOW)

4062

4219

Loop gain (LOW)

4063

Motor voltage

4084

4237

4084

4237

Gain change upon completion

4064

4220

4064

4220

of orientation

Stop position shift

4077

4228

4077

4228

PC-type orientation stop posi-

4031

4204

4031

4204

tion

293

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

D Synchronization control

Numerals are parameter numbers :

mode

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4044

4210

4044

4210

Proportional gain(LOW)

4045

4211

4045

4211

Integral gain(HIGH)

4052

4214

Integral gain(LOW)

4053

Position loop gain(HIGH)

4065

4221

4065

4221

Position loop gain(MID,HIGH)

4066

Position loop gain(MID,LOW)

4067

4222

4067

4222

Position loop gain(LOW)

4068

Motor voltage

4085

4238

4085

4238

Acc./Dec. time constant

4032

Shift amount

4034

D Rigid tapping mode

Numerals are parameter numbers :

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4044

4210

4044

4210

Proportional gain(LOW)

4045

4211

4045

4211

Integral gain(HIGH)

4052

4214

Integral gain(LOW)

4053

Position loop gain(HIGH)

4065

4221

4065

4221

Position loop gain(MID,HIGH)

4066

Position loop gain(MID,LOW)

4067

4222

4067

4222

Position loop gain(LOW)

4068

Motor voltage

4085

4238

4085

4238

ZRN gain %

4091

4239

4091

4239

Grid shift amount

4073

4223

4073

4223

294

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

D Spindle contouring

Numerals are parameter numbers :

control mode

(Cs axis control)

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4046

Proportional gain (LOW)

4047

Integral gain(HIGH)

4054

Integral gain(LOW)

4055

Position loop gain(HIGH)

4069

Position loop gain(MID,HIGH)

4070

Position loop gain(MID,LOW)

4071

Position loop gain(LOW)

4072

Motor voltage

4086

ZRN gain %

4092

Reference position shift

4135

D Spindle positioning

control mode

S11:

S12:

S21:

S22:

1st Main

1st Sub

2nd Main

2nd Sub

Proportional gain(HIGH)

4044

4210

4044

4210

Proportional gain (LOW)

4045

4211

4045

4211

Integral gain(HIGH)

4052

4214

Integral gain(LOW)

4053

Position loop gain(HIGH)

4065

4221

Position loop gain(MID,HIGH)

4066

Position loop gain(MID,LOW)

4067

4222

Position loop gain(LOW)

4068

Motor voltage

4085

4238

4085

4238

ZRN gain %

4091

4239

4091

4239

Reference position shift

4073

4223

4073

4223

295

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.1.3

The standard parameters related to each motor model can be set

automatically.

Automatic Setting of

D The specifications for controlling a motor depend on the specifications

Standard Parameters

defined by the machine tool builder. The parameters defined by the

machine tool builder are set as the standard values (initial values) by

this automatic setting function.

Therefore, when performing automatic operation, always set

parameters properly according to the parameter list (parameters

4000 and later).

1. Turn on the power in the emergency stop state.

2. Set bit 7 of parameter 4019 to 1.

4019

LDSP

Bit 7 (LDSP) The parameters for the serial interface spindle are:

0 : Not set automatically.

l 1 : Set automatically.

3. Set a motor model code.

4133

Motor model code

Code

Motor mode

Amplifier

100

a 0.5 (3000/8000min^-1)

SPM-2.2

101

a 1 (3000/8000min^-1)

SPM-2.2

102

a 1.5 (1500/8000min^-1)

SPM-5.5

103

a 2 (1500/8000min^-1)

SPM-5.5

104

a 2/1500 (3000/1500min^-1)

SPM-5.5

105

a 3 (1500/8000min^-1)

SPM-5.5

106

a 6 (1500/8000min^-1)

SPM-11

107

a 8 (1500/6000min^-1)

SPM-11

108

a 12 (1500/6000min^-1)

SPM-15

109

a 15 (1500/6000min^-1)

SPM-22

110

a 18 (1500/6000min^-1)

SPM-22

111

a 22 (1500/6000min^-1)

SPM-26

112

a P8 (750/6000min^-1)

SPM-11

113

a P12 (750/6000min^-1)

SPM-11

114

a P15 (750/6000min^-1)

SPM-15

115

a P18 (750/6000min^-1)

SPM-15

116

a P22 (750/6000min^-1)

SPM-22

117

a P30 (575/4500min^-1)

SPM-22

4. Turn off the power then back on. Then, the parameters are read.

296

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.2.1.1

Block diagram

S command

M command

PMC

M03 A M05, M06, M19

CW/CCW command,

Spindle speed

orientation, etc.

conversion

FIN

Miscellaneous function end

Motor speed

*SSTP

Spindle stop

Gear 1

Gear 2

GR1O, GR2O, GR3O

Gear selection (16M/18M)

GR1, GR2

Gear information (16T/18T)

Maximum spindle speed and other

parameters

PRM 3714 to 3743, 3735, 3736,

3751 and 3752 (M series)

PRM 3741 to 3744 (T series)

*ESP, MRDY

SAR, LDT

SFR, SRV

SST, ORAR

ORCM, TLM

SDT, ALM

Position coder interface

D/A converter

PRM 3730 (gain)

PRM 3731 (offset)

SVC

I/O card or I/O unit

Spindle amplifier

Operator’s panel

Spindle

motor

Load meter

Speed meter

Spindle

298

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.2.1.2

Calculation of S analog

voltage and related

parameters

[M series]

Gear change method A (bit 2 of parameter 3705 = 0)

SVC

Motor speed

Gear 1

Gear 2

Gear 3

(4095) 10V

Max

PRM 3736

PRM

3742

PRM

3743

(RPM)

PRM 3735

S code

PRM 3741

PRM 3742

PRM 3743

(RPM)

Gear change method B (bit 2 of parameter 3705 = 1)

SVC Motor speed

Gear 1

Gear 2

Gear 3

Max

(4095) 10V

PRM 3736

PRM 3752

PRM 3751

PRM 3735

S code

PRM 3741

PRM 3742

PRM 3743

(RPM)

[T series]

Constant surface speed control

SVC Motor speed

Gear 1

Gear 2

Gear 3

Gear 4

(4095) 10V

Max

S code

PRM 3741

PRM 3742

PRM 3743

PRM 3744

(RPM)

299

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

3706

TCW

CWM

TCW

CWM

Sign of output voltage

Analog voltage (+) with both M03 and M04

Analog voltage (-) with both M03 and M04

(+) with M03, (-) with M04

(-) with M03, (+) with M04

[M series]

3705

SGB

Spindle speed set when gear change is performed is:

0 : Maximum speed for each gear.

1 : Set by respective parameters. (Parameters 542, 543, 585, 586)

3741

Max. spindle speed of gear 1 (1 to 9999) [rpm]

3742

Max. spindle speed of gear 2 (1 to 9999) [rpm]

3743

Max. spindle speed of gear 3 (1 to 9999) [rpm]

3736

Upper limit of the output to the spindle motor

3735

Lower limit of the output to the spindle motor

Setting +^{Spindlespeed(upperlimitńlowerlimit)}

4095

Max. spindle speed

[T series]

3741

Max. spindle speed of gear 1 (1 to 9999) [rpm]

3742

Max. spindle speed of gear 2 (1 to 9999) [rpm]

3743

Max. spindle speed of gear 3 (1 to 9999) [rpm]

3744

Max. spindle speed of gear 4 (1 to 9999) [rpm]

300

6. AC SPINDLE (SERIAL INTERFACE)

B-63005EN/01

6.2.1.3

Tuning S analog voltage

(D/A converter)

(1) For M series, change the upper and lower limits as follows:

⋅ When gear change method A is used: Parameter 3736 = 4095,

parameter 3735 = 0

⋅ When gear change method B is used: Parameter 3751 = 4095,

parameter 3735 = 0

. For T series, these changes are not required.

(2) Tuning the D/A converter offset

Specify zero as the spindle speed. Then, by using a digital multimeter,

adjust the following parameter so that the voltage at the test pin DA2

on the spindle amplifier printed circuit board is 0 mV.

For M series

S0; (Specify the command by MDI operation, then press the cycle start button.)

For T series (in case of G-code system A)

G97 S0;

(Specify the command by MDI in the same manner as for M series.)

3731

Spindle speed (D/A converter) offset compensation value

(3) Tuning the D/A converter gain

Specify the maximum spindle speed of gear 1. Then, by using a digital

multimeter, adjust the following parameter so that the voltage at the

test pin DA2 on the spindle amplifier printed circuit board is 10.0 V.

For M series

Sxxxx ;

(xxxx is the value set in parameter 3741.)

(Specify the command by MDI operation, then press the cycle start button.)

3741

Max. spindle speed of gear 1 (1 to 9999) [rpm]

For T series (in case of G-code system A)

G97 Sxxxx ;

(xxxx is the value set in parameter 3741.)

(Specify the command by MDI operation, then press the cycle start button.)

3741

Max. spindle speed of gear 1 (1 to 9999) [rpm]

. Usually a voltage is output from the D/A converter by only

executing an S command. However, the clockwise rotation

command (M03) may be required on some machines.

301

B-63005EN/01

7.TROUBLESHOOTING

TROUBLESHOOTING

This chapter describes troubleshooting procedure.

7.1

CORRECTIVE ACTION FOR FAILURES

304

7.2

NO MANUAL OPERATION NOR AUTOMATIC . . 306

OPERATION CAN BE EXECUTED

7.3

JOG OPERATION CANNOT BE DONE

310

7.4

HANDLE OPERATION (MPG)

CANNOT BE DONE

314

7.5

AUTOMATIC OPERATION CANNOT BE DONE . . 317

7.6

CYCLE START LED SIGNAL HAS

TURNED OFF

325

7.7

NO DISPLAY APPEARS AT POWER-UP

327

7.8

ALARM 85 TO 87

(READER/PUNCHER INTERFACE ALARM)

329

7.9

ALARM 90(REFERENCE POSITION

RETURN IS ABNORMAL)

336

7.10

ALARM 300 (REQUEST FOR REFERENCE

POSITION RETURN)

338

7.11

ALARM 417

(DIGITAL SERVO SYSTEM IS ABNORMAL)

339

7.12

ALARM 704 (SPINDLE SPEED FLUCTUATION

DETECTION ALARM)

340

7.13

ALARM 749 (SERIAL SPINDLE

COMMUNICATION ERROR)

341

7.14

ALARM 750 (SPINDLE SERIAL LINK

CANNOT BE STARTED)

342

7.15

ALARM 700 (OVERHEAT AT CONTROL SIDE) . . 344

7.16

ALARM 900 (ROM PARITY ERROR)

345

7.17

ALARM 910, 911 (SRAM PARITY ERROR)

347

7.18

ALARM 912 TO 919 (DRAM PARITY ERROR) . . . 349

7.19

ALARM 920, 921

(WATCHDOG OR RAM PARITY)

350

7.20

ALARM 924 (SERVO MODULE

MOUNTING ERROR)

352

7.21

ALARM 930 (CPU ERROR)

353

7.22

ALARM 950 (PMC SYSTEM ALARM)

354

7.23

ALARM 951 (PMC-RC WATCHDOG ALARM) . . . 357

7.24

ALARM 972 (NMI ALARM)

358

7.25

ALARM 973 (NMI ALARM BY

UNKNOWN CAUSE)

359

303

7. TROUBLESHOOTING

B-63005EN/01

When a failure occurs, it is important to correctly grasp what kind of

7.1

failure occured and take appropriate action, to promptly recover the

CORRECTIVE

machine.

ACTION FOR

Check for the failure according to the following procedure :

FAILURES

With what

When?

What failure?

operation?

Grasp the kind of failure

↓

Appropriate action

↓

Recovery

7.1.1

Investigating the

(1) When and how many times (frequency of occurrences)

Conditions under

(2) With what operation

(3) What failure occurred

which Failure Occurred

When did the failure occur?

Date and time?

Occurred during operation? (how long was the operation?)

Occurred when the power was turned on?

Was there any lightening surge, power failure, or other disturbances to

the power supply?

How many times has it occurred

Only once?

Occurred many times ? (How many times per hour, per day, or per

month?)

With what operation did it occur ?

What was the NC mode when the failure occurred?

Jog mode/memory operation mode /MDI mode /reference position

return mode

If during program operation,

1) Where in the program ?

2) Which program No. and sequence No. ?

3) What program ?

4) Occurred during axial movement ?

5) Occurred during the execution of an M/S/T code ?

6) Failure specific to the program ?

Does the same operation cause the same failure ?

(Check the repeatability of the failure.)

Occurred during data input/output ?

For a failure related to feed axis servo

1) Occurred at both low feedrate and high feedrate ?

2) Ocurred only for a certain axis ?

304

B-63005EN/01

7.TROUBLESHOOTING

For a failure related to spindles

When did the failure occur ? (during power-on, acceleration,

deceleration, or constant rotation)

What failure occurred ?

Which alarm was displayed on the alarm display screen on the CRT?

(Check the axis along which an alarm has occurred for alarms 300 to

599.)

For alarm 350 : Examine diagnostic 202

For alarm 351 : Examine diagnostic 203

For alarm 414 : What does diagnostic display 200,201,204

indicate ?

For alarm 751 or 761

: Which spindle alarm is indicated ?

(indicated by AL-XX (XX is a number))

Is the screen correct ?

If machining dimensions are incorrect

1) How large is the error ?

2) Is the position display on the CRT correct ?

3) Are the offsets correct ?

Other information

⋅

Is there noise origin around machine?

If the failure has not occurred frequently, the cause may be external

noise to the power supply or inductive noise on machinery cables.

Operate other machines connected to the same power line and see

if noise come from the relays or compressors.

⋅

Is it taken any countermeasure for noise in machine side?

⋅

Check the following for the input power supply voltage :

1) Is there variation in the voltage ?

2) Are the voltages different depending on the phase ?

3) Is the standard voltage supplied ?

⋅

How high is the ambient temperature of the control unit?

(0_C to 45_C during operation)

Refer to manual about noise.

⋅

Has excessive vibration been applied to the control unit?

(0.5 G or less during operation)

When you contact our service center, specify the following items :

1) Name of the NC unit

2) Name of the machine tool builder and type of machine

3) Software series/version of the NC

4) Specifications of the servo amplifier and motor

(for a failure related to the servo)

5) Specifications of the spindle amplifier and spindle motor

(for a failure related to a spindle)

See the drawing issued by the machine tool builder for the locations

of the NC unit and servo/spindle amplifiers.

We use the following specification codes :

Servo /spindle amplifier : A06B-VVVV-HVVV

Servo/spindle amplifier

: A06B-VVVV-BVVV

(V represents a number)

305

7. TROUBLESHOOTING

B-63005EN/01

7.2

NO MANUAL OPERA-

TION NOR AUTOMAT-

IC OPERATION CAN

BE EXECUTED

Points

(1) Execute the following procedure when no manual nor automatic

operation is done

(2) Check whether position display shows correct position

(3) Check CNC status display

(4) Check CNC internal status using diagnostic function

Causes and

Countermeasures

1. Position display

(1) Check CNC status display (Refer to Section

1.9 NC STATUS

(relative, absolute,

DISPLAY for detail.)

machine coordinate)

(a) Emergency stop status (Emergency stop signal is turned on)

does not change

If status display shows

EMG

the emergency stop signal is input.

Check the following signal using the PMC’s diagnostic function

(PMCDGN).

1) When built-in I/O card is used.

X1008

*ESP

G0008

*ESP

ESP=0 indicates that emergency stop signal is input.

2) When built-in I/O card is not used.

X1008

*ESP

G0008

*ESP

ESP=0 indicates that emergency stop signal is input.

(b) It is a reset status

When RESET is displayed, any of a reset is functioned. Check the

following signal using the PMC’s diagnostic funciton

(PMCDGN).

1) An input signal from the PMC functions

G0008

ERS

RRW

When ERS is 1, external reset signal is input.

When RRW is 1, reset & rewing signal is input.

2) RESET key on the MDI keyboard functions

When the signals in 1) are 0,

RESET

key may be functioning.

Check the contact of

RESET

key using a tester.

When it is abnormal, change the keyboard.

306

B-63005EN/01

7.TROUBLESHOOTING

Operation mode status is displayed on the lower part of CRT as

follows :

If nothing is displayed, mode select signal is not input. Check mode

select signal using PMC’s diagnostic function (PMCDGN).

For details, refer to section 1.7 STATUS DISPLAY.

(Example of display)

JOG : Manual operation (JOG) mode

HND : Manual handle (MPG) mode

MDI : Manual data input (MDI) mode

MEM : Automatic operation (Memory) mode

EDIT: EDIT (Memory edit) mode

G0043

MD4

MD2

MD1

↓

Manual operation (JOG) mode

Manual handle (MPG) mode

Manual data input (MDI) mode

Automatic operation (Memory) mode

EDIT (Memory edit) mode

(2) Check diagnostic data 000 to 025 of the CNC Check an item for which

1 is displayed

No. Message

Display

000

WAITING FOR FIN SIGNAL

: 0

001

MOTION

: 0

002

DWELL

: 0

a.003

IN-POSITION CHECK

: 0

004

FEEDRATE OVERRIDE 0%

: 0

b.005

INTERLOCK / START LOCK

: 1 (Example)

006

SPINDLE SPEED ARRIVAL CHECK

: 0

010

PUNCHING

: 0

011

READING

: 0

012

WAITING FOR (UN) CLAMP

: 0

c.013

JOG FEEDRATE OVERRIDE 0%

: 0

d.014

WAITING FOR RESET, ESP, RRW OFF

: 0

015

EXTERNAL PROGRAM NUMBER SEARCH

: 0

Items with a to d relate with manual and automatic operation and its

detail is shown below.

307

7. TROUBLESHOOTING

B-63005EN/01

a. In-position check is

It shows that positioning is not yet completed. Check the contents of the

being done

following diagnostic number. (It is 1 in the following condition)

DGN 0300

Position Error

>PARAM 1826

In-positio width

1) Check the parameters according to the parameter list.

1825

Servo loop gain per axis

(Normal : 3000)

2) Servo system may be abnormal. Refer to servo alarm 400, 410, and

411.

b. Interlock or start lock

There are a plural interlock signals. Check at first which interlock signal

signal is input

is used by the machine tool builder at the parameters shown below.

3003

DIT

ITX

ITL

#0 ITL=0 shows interlock signal *IT is effective. To 1)

#2 ITX=0 shows interlock signal *ITn is effective. To 2)

#3 DIT=0 shows interlock signal "MITn is effective. To 3)

Check state of effective interlock signals using the diagnostic function

(PMCDGN) of the PMC.

Interlock signal (*IT) is input.

G0008

*IT

*IT=0 shows that interlock signal is input.

Axis interlock signal (*ITn) is input.

G0130

*IT8

*IT7

*IT6

*IT5

*IT4

*IT3

*IT2

+IT1

*ITn=0 shows interlock signal is input.

Interlock signal per axis and direction (+/- MITn) is input.

G0132

+MIT4

+MIT3

+MIT2

+MIT1

G0134

-MIT4

-MIT3

-MIT2

-MIT1

"MITn=1 shows interlock signal per axis and direction is input.

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c. Jog feedrate override is

Check the signals using PMC’s diagnostic function (PMCDGN)

G0010

*JV7

*JV6

*JV5

*JV4

*JV3

*JV2

*JV1

*JV0

G0011

*JV15

*JV14

*JV13

*JV12

*JV11

*JV10

*JV9

*JV8

When the override is 0% all bits of the above address becomes

1111

1111 or 0000

0000.

*JV15

JV0

Override

1111 1111 1111 1111

0.00%

1111 1111 1111 1110

0.01%

1101 1000 1110 1111

100.00%

0000 0000 0000 0001

655.34%

0000 0000 0000 0000

0.00%

d. NC is in a reset state

In this case, RESET is also displayed on the status display. Check it using

the procedure of 1 above.

2. When machine

(1) Machine lock signal (MLK) is input.

coordinate value does

not update on position

display

G0044

MLK

G0108

MLK8

MLK7

MLK6

MLK5

MLK4

MLK3

MLK2

MLK1

MLK : All axes machine lock

MLKn : Each axis machine lock

When the signal is 1, the corresponding machine lock signal is input.

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7.3

JOG OPERATION

CANNOT BE DONE

Points

(1) Check whether position display is operating.

(2) Check CNC status display.

(3) Check internal status using Diagnostic funciton.

Causes and Remedies

1. Position display

(1) Check mode selection status (JOG mode is not selected).

(relative, absolute,

When status display shows JOG, it is normal.

machine cooordinate)

When status display does not show JOG, mode select signal is not

does not change

selected correctly. Confirm the mode select signal using PMC’s

diagnostic function (PMCDGN).

G0043

MD4

MD2

MD1

↓

Manual operation (JOG) mode

(2) Feed axis and direction select signal is not input Check the signal using

PMC’s diagnostic function (PMCDGN).

G0100

+J8

+J7

+J6

+J5

+J4

+J3

+J2

+J1

G0102

-J8

-J7

-J6

-J5

-J4

-J3

-J2

-J1

Example)

When +X button is pressed on the operator’s panel, signal+J1 turns to

This signal is effected at its rise. If axis selection signal is input before

JOG mode is selected, axis movement does not occur. Turn the signal

to off, then on.

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7.TROUBLESHOOTING

(3) Check CNC’s diagnostic function 000 to 015. Check the items for

which 1 is displayed at right side.

No. Message

Display

000

WAITING FOR FIN SIGNAL

: 0

001

MOTION

: 0

002

DWELL

: 0

003

IN-POSITION CHECK

: 0

004

FEEDRATE OVERRIDE 0%

: 0

005

INTERLOCK / START LOCK

: 1(Example)

006

SPINDLE SPEED ARRIVAL CHECK

: 0

010

PUNCHING

: 0

011

READING

: 0

012

WAITING FOR (UN) CLAMP

: 0

013

JOG FEEDRATE OVERRIDE 0%

: 0

014

WAITING FOR RESET, ESP, RRW OFF

: 0

015

EXTERNAL PROGRAM NUMBER SEARCH

: 0

Items with a to d relate with manual and automatic operation and its

detail is shown below.

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7. TROUBLESHOOTING

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a. In-position check is

It shows that positioning is not yet completed. Check the contents of the

being done

following diagnostic number. (It is 1 in the following condition)

DGN 0300

Position Error

>PARAM 1826

In-positio width

1) Check the parameters according to the parameter list.

1825

Servo loop gain per axis

(Normal : 3000)

2) Servo system may be abnormal. Refer to servo alarm 400, 410, and

411.

b. Interlock or start lock

There are a plural interlock signals. Check at first which interlock signal

signal is input

is used by the machine tool builder at the parameters shown below.

PARAM

3003

DIT

ITX

ITL

#0 ITL=0 shows interlock signal *IT is effective. To 1)

#2 ITX=0 shows interlock signal *ITn is effective. To 2)

#3 DIT=0 shows interlock signal "MITn is effective. To 3)

Check state of effective interlock signals using the diagnostic function

(PMCDGN) of the PMC.

1) Interlock signal (*IT) is input.

G0008

*IT

*IT=0 shows that interlock signal is input.

2) Axis interlock signal (*ITn) is input.

G0130

*IT8

*IT7

*IT6

*IT5

*IT4

*IT3

*IT2

+IT1

*ITn=0 shows interlock signal is input.

3) Interlock signal per axis and direction (+/- MITn) is input

⋅ M series

G0132

+MIT4

+MIT3

+MIT2

+MIT1

G0134

-MIT4

-MIT3

-MIT2

-MIT1

⋅ T series

X0004

-MIT2

+MIT2

-MIT1

+MIT1

"MITn=1 shows interlock signal per axis and direction is input.

* For the T series, "MITn is valid only for manual operation.

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c. Jog feedrate override is

Check the signals using PMC’s diagnostic function (PMCDGN)

G0010

*JV7

*JV6

*JV5

*JV4

*JV3

*JV2

*JV1

*JV0

G0011

*JV15

*JV14

*JV13

*JV12

*JV11

*JV10

*JV9

*JV8

When the override is 0% all bits of the above address becomes

1111

1111 or 0000

0000.

*JV15

JV0

Override

1111 1111 1111 1111

0.00%

1111 1111 1111 1110

0.01%

1101 1000 1110 1111

100.00%

0000 0000 0000 0001

655.34%

0000 0000 0000 0000

0.00%

d. NC is in a reset state

In this case, RESET is also displayed on the status display. Check it using

the procedure of 1 above.

(4) Jog feed rate setting (Parameter) is not correct.

1423

Jog feedrate per axis

(5) Manual feed per revolution is selected ( T series)

This funciton feeds an axis synchronized with spindle rotation and

whether this function is used or not is selected by the following

parameter:

1402

JRV

#4 (JRV)

0 : Jog feed is of feed per minute

1 : Jog feed is of feed per revolution

(a) When parameter JRV is set to 1, feed rate of the axis is calculated

by synchronizing with rotation of the spindle. Therefore, rotate the

spindle.

(b) If the axis does not move even when the spindle is rotated, check

the detector of the spindle (position coder) and the cable between

the position coder and the CNC if it is short-circuited or

ungrounded.Refer to 2.4 for connection diagram.

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7.4

HANDLE OPERATION

CANNOT BE DONE

Points

(1) Check another manual operation (JOG) is accepted.

(2) Check CNC status display.

Causes and

Countermeasure

JOG operation is not

Consult with item 8.3 and 8.4.

acceptable, either

When only handle

(1) Check CNC status display at lower left corner of the CRT.

operation (MPG) cannot

(Refer to 1.7 STATUS DISPLAY for details)

be done

When the status display shows HND, mode selection is correct.

If it is not HND, mode select signal is not input correctly. Check the

mode select signal using the PMC’s diagnostic function(PMCDGN).

G0043

MD4

MD2

MD1

↓

Manuale handle mode

(2) Manual handle feed axis select signal is not input.

Check the signals using PMC’s diagnostic function (PMCDGN).

G0018

HS2D

HS2C

HS2B

HS2A

HS1D

HS1C

HS1B

HS1A

G0019

HS3D

HS3C

HS3B

HS3A

When axis select switch for manual handle feed is selected on the

machine operator’s panel, if the signals are input as follows, it is

normal.

Selected axis

HSnD

HSnC

HSnB

HSnA

no selection

1st axis

2nd axis

3rd axis

4th axis

5th axis

6th axis

7th axis

8th axis

In the above table, n is the number of the manual pulse generator

(MPG) and up to 3 MPGs can be used.

A feed axis is selected by 4-bit code of A to D.

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(3) Manual handle feed multiplication is not correct

Check the following signals using PMC’s PCDGN. Also confirm the

following parameters based on the parameter list.

G0019

MP2

MP1

↓

MP2

MP1

Multiplication

7113

Magnification of handle feed m(1 to 127)

7114

Magnification of handle feed n(1 to 1000)

7102

HNGx

#0(HNGx) Direction of MPG and travel of machine

0 : same direction

1 : reverse direction

7110

No. of MPGs used

(1 to 3)

(4) Checking manual pulse generator

(a) Incorrect of cable

Check disconnection of cable or short circuit.

Main CPU board

MPG (JA3)

1st MPG

2nd MPG

3rd MPG

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Manual pulse

CNC side MPG (JA3)

generator

HA1

(03)

(05)

HA1

1st

HB1

(02)

(06)

HB1

+5V

(09)

(03)

+5V

(12)

(04)

HA2

(03)

(05)

HA2

2nd

HB2

(04)

(06)

HB2

+5V

(18)

(03)

+5V

(14)

(04)

HA3

(05)

HA3

3rd

HB3

(06)

HB3

+5V

(20)

(03)

+5V

(16)

(04)

shield

Connector:half pitch

20pins (HIROSE)

(b) Manual pulse generator is faulty

When you rotate the MPG, the following signal is output.

Measure the signal with synchroscope at screw terminal on back of

MPG. If no signal is output, measure +5V voltage.

Back of MPG

Screw terminal

HA: A phase signal

HB: B phase signal

+5V 0V HA HB

Rotation in plus

Rotation in minus

1:1

+5V

off

+5V

off

1:1

1/4 phase difference

Check on and off ratio and phase difference of HA and HB.

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7.5

AUTOMATIC

OPERATION

CANNOT BE DONE

Points

(1) Check manual operation is possible.

(2) Check the status of cycle start LED on machine operator’s manual.

(3) Check status of CNC.

Causes and Remedies

When manual operation is either impossible, perform countermeasure,

based on the previous item ”Jog operation cannot be done”.

Confirm that a correct mode is selected according to the mode select status

of CNC status display. Also, by confirming the automatic operation

status it is possible to identify cycle operation, feed hold and cycle stop

state.

1. When cycle operation is

“****” is displayed at status display on CRT.

not started (Cycle start

(1) Mode select signal is not correct.

LED does not light)

When the mode select signal is input correctly, following status

display is done.

MDI

:Manual data input mode (MDI)

MEM :Memory operation mode

RMT

:Remote operation mode

If status display does not show a correct status, check the mode signal

with following diagnosis function of PMC side (PMCDGN).

G0043

DNCI

MD4

MD2

MD1

DNCI

MD4

MD2

MD1

Mode select

–

Manual data input mode

Memory operation mode

Remote operation mode

(2) Cycle start signal is not input

This signal turns 1 when cycle start button is pressed and turns 0 when

it is released. The cycle start actuates when it changes from 1 to 0.

Check the state of the signal using PMC’s diagnostic

function(PMCDGN).

G0007

#2 (ST)

: Cycle start signal

(3) Feed hold signal is input

Under normal state, the feed hold signal is 1 when the feed hold button

is not pressed.

Check the state of this signal using the PMC’s diagnostic function

(PMCDGN) .

G0008

*SP

#5 (*SP)

: Feed hold signal

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7. TROUBLESHOOTING

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2. When an automatic

CNC’s status display shows “STRT” on the CRT.

operation is in progress

(1) Check the contents of diagnostic nos. 000 to 015.

(Cycle start LED is lit)

No. Message

Display

000

WAITING FOR FIN SIGNAL

: 1(Example)

001

MOTION

: 0

002

DWELL

: 0

003

IN-POSITION CHECK

: 0

004

FEEDRATE OVERRIDE 0%

: 0

005

INTERLOCK / START LOCK

: 0

006

SPINDLE SPEED ARRIVAL CHECK

: 0

010

PUNCHING

: 0

011

READING

: 0

012

WAITING FOR (UN) CLAMP

: 0

013

JOG FEEDRATE OVERRIDE 0%

: 0

014

WAITING FOR RESET, ESP, RRW OFF

: 0

015

EXTERNAL PROGRAM NUMBER SEARCH

: 0

Items with a to i relate with an automatic operation and their details

are as follows :

a. An auxiliary function is

An auxiliary function (M/S/T/B) specified in a program is not ended.

being executed (waiting

Check according to the following procedure.

for FIN signal)

At first, confirm the kind of interface of an auxiliary function.

3001

HSIF

#7(HSIF)

0 : M/S/T/B is of normal interface.

1 : M/S/T/B is of high-speed interface.

1) Normal interface

When the auxiliary function finish signal turns from 1 to 0, the

auxiliary function is supposed to be ended and the next block is read

for operation. Confirm the status of this signal using PMC’s

diagnostic function(PMCDGN).

G0004

FIN

#3 (FIN)

: Auxiliary function finish signal

2) High-speed interface

The auxiliary function is supposed to be ended when the signals are

in the following state. Confirm it using PMC’s diagnostic function

(PMCDGN).

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G0005

BFIN

TFIN

SFIN

MFIN

#0(MFIN)

: M function finish signal

#2(SFIN)

: S function finish signal

#3(TFIN)

: T function finish signal

#4(BFIN)

: 2nd auxiliary function finish signal

F0007

#0(MF)

: M function strobe signal

#2(SF)

: S function strobe signal

#3(TF)

: T function strobe signal

#7(BF)

: 2nd auxiliary function strobe signal

G0005

BFIN

TFIN

SFIN

MFIN

#0(MFIN)

: M function completion signal

#2(SFIN)

: S function completion signal

#3(TFIN)

: T function completion signal

#4(BFIN)

: Second auxiliary function completion signal

F0007

#0(MF)

: M function strobe signal

#2(SF)

: S function strobe signal

#3(TF)

: T function strobe signal

#4(BF)

: Second auxiliary function strobe signal

G0004

MFIN3

MFIN2

#4(MFIN2)

: Second M function completion signal

#5(MFIN3)

: Third M function completion signal

G0008

MF3

MF2

#4(MF2)

: Second M function strobe signal

#5(MF3)

: Third M function strobe signal

* The second and third M functions are enabled only when bit 7 (M3B)

of parameter No. 3404 is set to 1.

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FANUC Series 16i / 18i / 160i / 180i - Model A. Maintenance Manual (B-63005EN/01) - page 11