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FANUC Series 0i-MODEL F Plus. CONNECTION MANUAL (FUNCTION) - page 215

10. SPINDLE SPEED FUNCTION

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NC command

Motion of servo

axis

RTAP

S code output

M code output

FIN

*SSTP

SOR

GR1/GR2

SFR/SRV

RGTAP

ENB

Spindle output

Spindle rotation

Position loop

G84/G88 M29

Motion 1

Motion 2

M29

Gear select

SFR=1
SRV=0

SFR=0
SRV=0

Spindle stop

Gear change

250ms
or more*

To be masked to the motion 2

Fig. 10.13.15.5 (b) When gear-change is performed

NOTE

The delay(*) is not necessary, when an appropriate value is set to the parameter
No.4099 for the delay time for stable motor excitation.

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10. SPINDLE SPEED FUNCTION

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10.13.15.6

Specifying G84/G88 for rigid tapping by parameters

NC command

Motion of servo

axis

RTAP

S code output

M code output

FIN

*SSTP

SOR

GR1/GR2

SFR/SRV

RGTAP

ENB

Spindle output

Spindle rotation

Position loop

G84/G88

Motion 1

Motion 2

M29 is commanded
internally.

C axis clamp

SFR=1
SRV=0

SFR=0
SRV=0

Spindle stop

250ms
or more*

To be masked to the motion 2

Fig. 10.13.15.6 (a) When gear-change is not performed

NOTE

The delay(*) is not necessary, when an appropriate value is set to the parameter
No.4099 for the delay time for stable motor excitation.

10. SPINDLE SPEED FUNCTION

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NC command

Motion of servo

axis

RTAP

S code output

M code output

FIN

*SSTP

SOR

GR1/GR2

SFR/SRV

RGTAP

ENB

Spindle output

Spindle rotation

Position

loop

Motion 1

Motion 2

G84/G88

M29 is commanded

internally.

C axis clamp

Gear select

SFR=1
SRV=0

SFR=0
SRV=0

Spindle stop

Gear change

250ms
or more*

To be masked to the motion 2

Fig. 10.13.15.6 (b) When gear-change is performed

NOTE

The delay(*) is not necessary, when an appropriate value is set to the parameter
No.4099 for the delay time for stable motor excitation.

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10. SPINDLE SPEED FUNCTION

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10.13.15.7

Timing of the M code for unclamping

After extraction from the hole bottom to the R point level (motion 5), the M code for unclamping is
output. When FIN is returned, dwell or rapid traverse to the initial level (motion 6) starts.

Motion

M code output

FIN

Motion 5

Dwell or motion 6

C axis unclamp

10.13.15.8

Timing to cancel rigid tapping mode

When rigid tapping is completed, the mode is canceled if a G code (such as G80, canned cycle G code, or
Group 01 G code) is issued.
Spindle output has the effect of execution of S0. On the falling edge of the ENB signal (corresponding
ENBs signal in multi-spindle control), cancel the rigid tapping mode of the PMC (for example, by turning
off spindle activation) and set the rigid tapping signal to "0". After confirming that the rigid tapping
signal is set to "0", proceed to the next block.
When gear change is performed using *SSTP and SOR, the ENB signal can be either "1" or "0". Do not
cancel the PMC's rigid tapping mode at the falling edge of the ENB signal under these circumstances. The
position loop is also canceled.
When the CNC is reset, the PMC's rigid tapping mode must be canceled.
When bit 2 (CRG) of parameter No. 5200 is 1, the system goes directly to the next block without
checking that the rigid tapping signal is "0". Set CRG to 1 for systems in which the rigid tapping signal is
always "1".

NC command

Servo axis

operation

RTAP

SFR/SRV

RGTAP

ENBs

Spindle output

Position loop

G80

or G code of group 01

Operation specified by cancellation
block

SFR=0
SRV=0

10. SPINDLE SPEED FUNCTION

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CAUTION

1 If rigid tapping mode is canceled by a Group 01 G code, such as G00 or G01,

the block containing the G code is executed at the same time the ENB signal is
turned to "0". Therefore, if the block contains an M code for controlling the
spindle, an error may occur during processing in the PMC.

2 When bit 2 (CRG) of parameter No. 5200 is 1, if the next block contains an M

code for controlling the spindle, an error may occur during processing in the
PMC, when:

- Rigid tapping mode is canceled by issuing G80
- Rigid tapping mode is canceled by issuing a Group 01 G code , such as G00

or G01

NOTE

Rigid tapping mode is canceled as described above regardless of the gear
selection method of M-type or T-type.

10.13.16

FSSB High-speed Rigid Tapping

Outline

By the FSSB communication between a CNC and a spindle amplifier, rotational position information of a
spindle can be transmitted from a spindle amplifier to a servo control on CNC. The FSSB high-speed
rigid tapping is a new function that a servo axis follows a spindle axis by utilizing this FSSB
communication. And it is a characteristic of this function that the synchronization error becomes better
than the ordinary function. And a synchronous error does not become worse even if a spindle error
becomes worse by setting a shorter time constant for acceleration/deceleration than that of the former
rigid tapping function. Therefore the machining cycle time can be shortened with keeping the
synchronous accuracy.

In the following rigid tapping, this function cannot be used.
-

The rigid tapping by the analog spindle or the spindle control with servo motor.

The rigid tapping with one servo motor and multiple spindle motors by spindle command
synchronous control.

Explanation

The spindle amplifier and the servo amplifier used for FSSB high-speed rigid tapping need to be
connected to the main servo card. The spindle amplifier and the servo amplifier used for this function can
be connected to both the first FSSB line and the second FSSB line.

Ex.1) FSSB high-speed rigid tapping with Z axis and S1 spindle axis in the one path system

[Example of connection of FSSB]

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10. SPINDLE SPEED FUNCTION

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CNC

Servo card

(Main)

Spindle amplifier

Servo amplifier

Servo motor: X

Servo motor: Y

Servo motor: Z

Spindle motor: S1

First FSSB line

Second FSSB line

Servo amplifier

Servo motor: A

[Example of parameter setting]

When the bit 0 (FHR) of parameter No.24203 is set to 1, FSSB high-speed rigid tapping is
enabled.

And, the index number of the spindle axis that synchronizes with the servo axis used by FSSB
high-speed rigid tapping is set to the parameter (No.24204) as follows.

24204

SP INDEX OF SV FSSB SYNC

In addition, set 1 to the bit 1 (FHRSV) of parameter No.2429 and bit 1 (FEED) of parameter
No.2005 of Z axis and the bit 1 (FHRSP) of parameter No.4549 of S1 spindle axis.

Ex.2) Two groups of FSSB high-speed rigid tapping with Z1 - S1 and Z2 - S2 in two paths system

[Example of connection of FSSB]

CNC

Servo card

(Main)

Spindle amplifier

Servo amplifier

Servo motor: X1

Servo motor: Y1

Servo motor: X2

Spindle motor: S1

Spindle amplifier

Spindle motor: S2

First FSSB line

Servo amplifier

Servo motor: Z1

Servo amplifier

Servo motor: Y2

Servo motor: Z2

10. SPINDLE SPEED FUNCTION

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[Example of parameter setting]

When the bit 0 (FHR) of parameter No.24203 is set to 1, FSSB high-speed rigid tapping is
enabled.

And, the index number of the spindle axis that synchronizes with the servo axis used by FSSB
high-speed rigid tapping is set to the parameter (No.24204) as follows.

Path 1

24204

SP INDEX OF SV FSSB SYNC

Path 2

24204

SP INDEX OF SV FSSB SYNC

In addition, set 1 to the bit 1 (FHRSV) of parameter No.2429 and bit 1 (FEED) of parameter
No.2005) of Z1 and Z2 axes and the bit 1(FHRSP) of parameter No.4549 of S1 and S2 spindle
axes.

Eight or less index numbers of the spindle axis can be set in all system. If nine or more index
numbers of the spindle axis or illegal index number of the spindle axis is set , the alarm
PW0037, "SV/SP COMBINATION ERROR" is issued.

NOTE

1 Adjust precision and machining time by setting of the time constant for

acceleration/deceleration in rigid tapping. In the ordinal rigid tapping, if the time
constant for acceleration/deceleration is extremely short, the spindle motor
cannot follow to the move command and the synchronization error of rigid
tapping increases because the torque command of the spindle motor is
saturated in the high speed rotation area. In the FSSB high-speed rigid tapping,
even if the setting of the time constant for acceleration/deceleration is short up
to the extent with which the torque command of the spindle motor is somewhat
saturated, the synchronization precision can be maintained because the servo
motor can follow to the rotation of the spindle motor. However, please set within
the range where the overshoot is not occurs in the hole bottom.
Refer to the following manual for the details of the tuning way.
FANUC AC SPINDLE PARAMETER MANUAL (B-65280EN)
"Tuning way for FSSB High-speed Rigid Tapping"

2 When the parameter is changed, the power must be turned off before an

operation is continued.

3 FSSB high-speed rigid tapping cannot be used with the rigid tapping by the

analog spindle or the spindle control with servo motor. If the above rigid tapping
is set, the alarm PW0037, "SV/SP COMBINATION ERROR" is issued.

4 FSSB high-speed rigid tapping cannot be used with the rigid tapping with a

servo motor and multiple spindle motors by spindle command synchronous
control. If the rigid tapping is commanded on the above condition, the alarm
PS0203, "PROGRAM MISS AT RIGID TAPPING" is issued.

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10. SPINDLE SPEED FUNCTION

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NOTE

5 When FSSB high-speed rigid tapping is used with 3-dimensional rigid tapping,

three axes of 3-dimensional rigid tapping need to set the same motor number of
the spindle to the parameter (No.24204). If there is an axis whose index number
of the spindle axis is different, the alarm PS0203, "PROGRAM MISS AT RIGID
TAPPING" is issued on the command of rigid tapping. In addition, three axes of
3-dimensional rigid tapping need to set the bit 1 (FHRSV) of parameter No.2429
and bit 1 (FEED) of parameter No.2005.

6 When Peck rigid tapping cycle is used (bit 5 (PCP) of parameter No.5200 is 1),

set 1 to the bit 7 (PRA) of parameter No.5209. If the illegal program that the
depth of cut is smaller than the cutting start distance is commanded, the alarm
PS5560, "ILLEGAL DEPTH OF CUT" can be issued.

7 The setting of the optional gear ratio cannot be used.
8 If the exchanged axes by flexible path axis assignment or composite control are

used by FSSB high-speed rigid tapping, the motor number of the spindle axis
that synchronizes with each servo axis (the parameter (No.24204)) need to set.
In addition, set 1 to bit1 (FHRSV) of parameter No.2429 and Bit 1 (FEED) of
parameter No.2005.

9 If the tapping axis of FSSB high-speed rigid tapping is the master axis of axis

synchronous control, the same motor number of the spindle (the parameter
(No.24204)) need to be set to the slave axes. In FSSB high-speed rigid tapping,
synchronization establishment and synchronization error compensation cannot
be used.

10 If the tapping axis of FSSB high-speed rigid tapping is the master axis of tandem

control, it is not necessary to set the same motor number of the spindle (the
parameter (No.24204)) to the slave axes.

11 With FSSB high-speed rigid tapping, the following servo software functions

cannot be used:

- Dual position feedback function

If FSSB high-speed rigid tapping is used with either of the above functions, the
alarm SV0417, "ILL DGTL SERVO PARAMETER" (Diagnosis data No.4291) is
issued.

12 With this function, spindle differential speed control cannot be used.
13 All of CNC, servo, and spindle software need to support this function. If even

one of the software doesn't support it, the ordinal rigid tapping is executed or the
excess error alarm is issued.

Limitation

Synchronous control (Synchronous/Composite control)

An axis of synchronous control cannot be used as a tapping axis for FSSB high-speed rigid tapping.

Angular axis control

An angular axis cannot be used as a tapping axis for rigid tapping.

Diagnosis Data

1612

The index number of the spindle axis that synchronizes with each servo axis

[Data Type] Byte axis

The index number of the spindle axis that can use direct communication between a
spindle amplifier and a servo amplifier on FSSB connection is displayed.

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