
FANUC AC SPINDLE MOTOR a series
1. ADJUSTMENT
B–65160E/02
8
0 0 Parameter No. 540
0 1 Parameter No. 541
1 0 Parameter No. 542
1 1 Parameter No. 543
(iii)The data calculated in (ii) is output to output signal: F172
(R08O to R01O) and F173 (R12O to R09O).
(iv) The spindle speed data is transferred to the aseries (Serial)
spindle according to the SIND (input signal) state.
0: The maximum spindle speed is converted to "16384
according to the data calculated in (ii), then the result is
transferred to the aseries (Serial) spindle.
1: The maximum spindle speed is converted to "16384
according to the data ("4095) in input signal:
G124 (R08I to R01I) and G125 (R12I to R09I), then the
result is transferred to the aseries (Serial) spindle.
(v) The polarity of the speed command can be specified
according to the SSIN (input signal) signal as follows:
0: The polarity is determined by parameter Nos. 13#7 and
13#6, and M03 and M04.
1: The polarity is determined by SGN (input signal) .
(vi) For constant surface-speed control, the spindle speed (in
min
-1
) is calculated from G96, Sxxxxx (m/min.) and the
position on the X axis, then steps (ii) to (iv) are performed.
(vii)
*
SSTP (input signal): Spindle stop signal
0: S0 is output to F172 and F173 regardless of the
command.
1: Normal steps (ii) and (iii) are performed.
*
SSTP works on the value S on the command. It exists
between (i) and (ii), and functions in a portion where the S
code value specified by program or with the MDI is
recognized in the CNC.
If
*
SSTP is 0, the resulting output to F172 and F173 is set to
0. If SIND is 1 and values are set in G124 and G125, however,
the spindle is rotated.
(b) M series (machining center)
(i) In the T series, the gear selection signals are input signals. In
the M series, they are output signals. With the T series, one
of four gear stages is selected by two bits. With the M series,
one of three gear signals GR1O, GR2O, and GR3O, and the
SF signal (to indicate the change of the gear signal) are
output.
Set spindle speed command offset compensation parameter
No. 577 to 0, and spindle speed command gain parameter No.
516 to 1000.
Gear Maximum spindle speed (spindle speed when the
maximum motor speed is specified)
GR1O Parameter No. 541 : Low
GR2O Parameter No. 539 : Middle
GR3O Parameter No. 555 : High
To clamp the maximum spindle speed command, set
parameter No. 542.
In normal operation, set 4095 (to output up to 10 V).
To clamp the minimum spindle speed command, set
parameter No. 543.
In normal operation, set 0.
For type B gear change, the motor speed at gear change must
be set in the following parameters: