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FANUC Series 0i-MODEL F Plus. CONNECTION MANUAL (FUNCTION) - page 50

1. AXIS CONTROL

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[Example of connection of FSSB]

CNC

Servo card

(Main)

Spindle amplifier

Servo amplifier

Servo motor : X

Servo motor : Y

Servo motor : C

(EGB slave axis)

Spindle motor : S1

First FSSB line

Second FSSB line

*EGB dummy axis : A

[Example of parameter setting]

The following settings are necessary in addition to setting of existing parameters related to the EGB.

When bit 0 (FHR) of parameter No. 24203 is set to 1, position data transmission by FSSB is
enabled.
And, the index number of the spindle axis that synchronizes with the EGB dummy axis used by
EGB (FSSB type) is set to the parameter No. 24204 as follows.

24204

SP INDEX OF SV FSSB SYNC

In addition, set 1 to bit 2 (FSBSYNx) of parameter No. 2429 of EGB dummy axis and bit 2
(FHESPs) of parameter No. 4549 of S1 spindle axis.

Ex.2) Two groups of EGB (FSSB type) with C1 – S1 (EGB dummy axis is A1 axis) and C2 – S2 (EGB

dummy axis is A2 axis) in two paths system

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[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 : Y2

*EGB dummy axis : A2

*EGB dummy axis : A1

Servo motor : C1

(EGB slave axis)

Servo motor : C2

(EGB slave axis)

[Example of parameter setting]

The following settings are necessary in addition to setting of an existing parameters related to the
EGB.

Path 1

24204

SP INDEX OF SV FSSB SYNC

Path 2

24204

SP INDEX OF SV FSSB SYNC

In addition, set 1 to bit 2 (FSBSYNx) of parameter No. 2429 of A1 and A2 axes and bit 2 (FHESPs)
of parameter No. 4549 of S1 and S2 spindle axes.

Ex.3) EGB (FSSB type) by EGB 2 pair with using common master axis to C1 – S1 (EGB dummy axis is

A axis) and V1 – S1 (EGB dummy axis is V2 axis) in the one path system

1. AXIS CONTROL

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[Example of connection of FSSB]

CNC

Servo card

(Main)

Spindle amplifier

Servo amplifier

Servo motor : X

Servo motor : Y

Servo motor : V1

Spindle motor : S1

First FSSB line

Servo amplifier

*EGB dummy axis : V2

*EGB dummy axis : A

Servo motor : C

(EGB slave axis)

[Example of parameter setting]

The following settings are necessary in addition to setting of an existing parameters related to the
EGB.

24204

SP INDEX OF SV FSSB SYNC

In addition, set 1 to bit 2 (FSBSYNx) of parameter No. 2429 of A and V2 axes and , bit 2 (FHESPs)
of parameter No. 4549 of S1 spindle axis.

The servo axes that can receive the feedback data from the spindle axis through FSSB are eight axes
or less in all system. If nine axes or more of the servo axis or illegal index number of the spindle axis
is set, the alarm (PW0037) “SV/SP COMBINATION ERROR” is issued.

NOTE

1 This function can be used by the following EGB functions.

- Electronic gear box

- U-axis control

- Signal-based servo EGB synchronous control

2 As following EGB functions are realized by 2 spindles, it is impossible to apply

this FSSB type.

- Spindle electronic gear box

- Simple spindle electronic gear box

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NOTE

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

operation is continued.

4 EGB (FSSB type) cannot be used with the analog spindle or the spindle control

with servo motor. If the above EGB (FSSB type) is set, the alarm (PW0037)
“SV/SP COMBINATION ERROR” is issued.

5 When you don’t use spindle sensor and drive the axis only by motor a sensor,

arbitrary gear ratio between motor and spindle (parameter No.4171-No.4174) is
used. In the case, please set 1 in bit 1 (EGBAGR) of parameter No.4004.

6 When you use automatic phase synchronization of EGB (FSSB type) from the

stop state or slow moving, you have to rotate the spindle axis at least one
rotation with higher speed than 10min

-1

before the phase synchronization

operation.

7 With EGB dummy axis used by EGB (FSSB type), the following functions cannot

be used.

- FSSB high-speed rigid tapping

- Servo/spindle synchronous control

- Fully closed control

If EGB (FSSB type) is used with either of the above functions, the alarm

(SV0417) “ILL DGTL SERVO PARAMETER” is issued.

8 When you use U-axis Control or Signal-based Servo EGB Synchronous Control

by Electronic Gear Box(FSSB type), set “1” to EGB synchronization mode
selection signal EGBS<Gn067.4> or EGB synchronization start signals
EGBS1-EGBS8<Gn530> according to following procedure (a) to (c).

(a) Turn on CNC and confirm the ready of all spindle (All-spindle operation ready

signal SRSRDY<Fn034.7>=”1”).

(b) Wait about 40msec after (a).

If EGBS<Gn067.4> or EGBS1-EGBS8<Gn530> has been “1” since turning on
CNC, a shock might occur at the point where the spindle passes the first one
rotation signal.

All-spindle operation ready signal
SRSRDY<Fn034.7>

EGB synchronization mode selection
signal EGBS<Gn067.4>,
EGB synchronization start signals
EGBS1-EGBS8<Gn530>

40msec

Fig.1.9.8 (a) EGBS or EGBS1-EGBS8 ON

1. AXIS CONTROL

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Signal

EGB synchronization mode selection signal
EGBS<Gn067.4>

[Classification] Input signal

[Function] Selects the EGB synchronization mode for U-axis control.

[Operation] When this signal becomes “1”, the control unit operates as follows:

Starts EGB synchronization.

EGB synchronization start signals
EGBS1<Gn530.0>, EGBS2<Gn530.1>, …

[Classification] Input signal

[Function] Performs servo EGB synchronous control with the axis of interest used as a slave axis.

[Operation] When this signal becomes “1”, the control unit operates as follows:

Starts servo EGB synchronous control with the axis of interest used as a slave axis.

When this signal becomes “0”, the control unit operates as follows:
-

Cancels servo EGB synchronous control for the axis of interest used as a slave axis.

NOTE

If the master axis (spindle) or slave axis (servo axis) is not at halt,
turning the EGB mode on/off causes the slave axis to
accelerate/decelerate abruptly. Before turning the EGB mode
on/off, be sure to keep both the master and slave axes at halt.

All-spindle operation ready signal
SRSRDY <Fn034.7>

[Classification] Output signal

[Function] This signal posts that all spindles used are ready for operation.

[Operation] This signal becomes “1” when:

All used spindles become ready for operation.

It becomes “0” when:

Some of the used spindles are not ready for operation.

Signal Address

Gn067

EGBS

Gn530

EGBS8

EGBS7

EGBS6

EGBS5

EGBS4

EGBS3

EGBS2

EGBS1

Fn034

SRSRDY

Parameter

2429

FSBSYNx

[Input type] Parameter input

[Data type] Bit axis

#2 FSBSYN

x Servo control by EGB (FSSB type) is:

Disabled.

Enabled.

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NOTE

1 When using EGB (FSSB type), set this parameter to 1.
2 In the EGB dummy axis, in which bit 2 (FSBSYNx) of parameter

No.2429 is 1, the following functions cannot be used. If EGB
(FSSB type) is used with either of the following functions, the alarm
(SV0417) “ILL DGTL SERVO PARAMETER” is issued. (Detail
number of diagnosis data No.0352 :4292 or 4291)
- FSSB high-speed rigid tapping (Bit 1 (FHRSVx) of parameter
No.2429)
- Servo/spindle synchronous control (Bit 4 (SPSx) of parameter
No.2016)

3 When this parameter is set, the power must be turned off before

operation is continued.

4004

EGBAGR

[Input type] Parameter input

[Data type] Bit spindle

#1 EGBAGR

Arbitrary gear ratio between the motor and spindle (parameter No.4171-No.4174) by

EGB (FSSB type) is:
0:

Disabled.

Enabled.

NOTE

1 To use arbitrary gear ratio between the motor and spindle in case

of using a motor sensor only without a spindle sensor, set the
parameter EGBAGR to 1.
For details of parameter of arbitrary gear ratio (No.4171-No.4174),
refer to spindle parameter manual (B-65280).

2 To use this function bit, it’s necessary to prepare the applicable

CNC software and spindle software.

3 When bit 1 (EGBAGR) of parameter No.4004 is 0, the feedback

pulsed from EGB master axis doesn’t take the arbitrary gear ratio
into account.

4 Do not change parameter of arbitrary gear ratio and clutch/gear

signals (CTH) during EGB mode. If parameters or signals are
changed, the alarm (SP9167) "Spindle control sequence fault" and
the alarm (SV0385) "Serial data error (EXT)" will occur.

4549

FHESPs

[Input type] Parameter input

[Data type] Bit spindle

#2 FHESP

s Spindle control by EGB (FSSB type) is:

Disabled.

Enabled.

1. AXIS CONTROL

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NOTE

1 When using EGB (FSSB type), set this parameter to 1.
2 In the spindle axis, in which bit 2 (FHESPs) of parameter No.4549

is 1, FSSB high-speed rigid tapping (bit 1 (FHRSPs) of parameter
No.4549) cannot be used. If EGB (FSSB type) is used with the
FSSB high-speed rigid tapping, the alarm (SP9068) “ILLEGAL
SPINDLE PARAMETER” is issued.

24203

FHR

NOTE

When the parameter is set, the power must be turned off before
operation is continued.

[Input type] Parameter input

[Data type] Bit

#0 FHR

Position data transmission by FSSB is:

Disabled.

Enabled.

NOTE

1 In addition, it is necessary to set parameter No.24204.
2 When the following function is used, set 1 to this parameter.

- FSSB high-speed rigid tapping

- Electronic gear box (FSSB type)

- Servo/Spindle synchronous control (FSSB type)

24204

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

NOTE

When the parameter is set, the power must be turned off before
operation is continued.

[Input type] Parameter input

[Data type] Byte axis

[Valid data range] 0 to the maximum number of spindles

Set the index number of the spindle axis that synchronizes with EGB dummy axis used
by EGB (FSSB type).

NOTE

1 When bit 0 (FHR) of parameter No.24203 is 1, this parameter is

enabled.

2 Eight or less index numbers of the spindle axis can be set in the

system. If nine or more index numbers of the spindle axis are set,
the alarm (PW0037) "SV/SP COMBINATION ERROR" is issued.

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Reference) Existing parameters related to the EGB.

Parameter

number

Description

1006#0
1006#1

To specify the distance for the slave axis by L in the synchronization command, an EGB slave
axis and an EGB dummy axis require that the setting of a rotary axis (type A) (bit 0 (ROT) of
parameter No. 1006 be 1 and bit 1 (ROS) of parameter No. 1006 be 0.

1023

Set from the FSSB setting screen. For FSSB manual setting, be sure to set the EGB axis as
described below:
The slave axis must be set with an odd number, and the dummy axis with an even number.
They must be consecutive.
Example:

If the servo axis number of the slave axis is 1, the servo axis number of the dummy axis
must be set to 2. If the servo axis number of the slave axis is 3, the servo axis number of
the dummy axis must be set to 4.

2011#0

Specify an axis to be synchronized. Specify 1 for both an EGB slave axis and EGB dummy axis.

2084/2085

Flexible feed gear. The feed back data from spindle position sensor is regarded as 2

pulses/rev for input to dummy axis. If you want to thin it out, please use Flexible feed gear in
dummy axis. (See following figure)

3115#0

The current position is not indicated for an axis for which this parameter is set to 1.Since the
current position for an EGB dummy axis has no meaning, set this parameter to 1 to delete the
current position indication for the axis from the screen.

7700#0

The synchronization mode is canceled (0)/not canceled (1) by a reset.

7700#2

Compensation direction for helical gear compensation

7701#3

At the start of synchronization (G81), synchronization is started (0)/not started (1) if the number
of hob threads L is specified as 0.

7702#0

The specifiable number of teeth, T, at the start of synchronization (G81) is not reduced to a 1/10
of a specified value (0)/reduced (1).

7702#3

The retract function with an alarm is disabled (0)/enabled (1).

7703#0

During synchronization (G81), feed per revolution is performed for feedback pulses (0)/pulses
converted to the speed for the workpiece axis(1).

7703#1,#2

Specify when to perform a retract operation with the retract function with an alarm; during
synchronization; during synchronization and automatic operation; or during synchronization or
automatic operation.

7709

Number of the axial feed axis in helical gear compensation

7731#0

The EGB command is G80 and G81(0)/G80.4 and G81.4(1).

7731#3

When the automatic phase synchronization function for the electronic gear box is disabled, the
G81 command cannot be issued again (an alarm is issued) (0)/can be issued again (1) during
EGB synchronization.

7731#5

In EGB synchronization start command G81.4, the number of teeth is specified in T
(0)/specified in R (1).

7740

Feedrate during retraction

7741

Retract amount

7772

Number of position detector pulses per rotation about tool axis. Please set the value which
takes the Flexible feed gear and EGB exponent setting into consideration. (See following
figure.)

7773

Number of position detector pulses per rotation about workpiece axis

7782

Pulse count of position detector per rotation about EGB master axis

7783

Pulse count of position detector per rotation about EGB slave axis

7784

Numerator of a signal-based servo EGB synchronization ratio

7785

Denominator of a signal-based servo EGB synchronization ratio

7786#0

The signal-based servo EGB synchronization function is invalid (0) / valid (1).

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