
FANUC AC SPINDLE MOTOR a series
1. ADJUSTMENT
B–65160E/02
10
Theaseries (Serial) spindle allows the BMI interface only. Basically,
the PMC calculates and sends the contents of the spindle motor speed
command to the CNC. In general, spindle control SPCNT (machine
instruction) of the PMC is used.
(a) Sxxxxx (in min
-1
) is specified by the program or with the MDI.
(b) Sxxxxx (in min
-1
) is output to output signal: F20 to F23 (32 bits)
without modification.
(c) The PMC sets data, which is calculated with the maximum motor
speed assumed to be "8192, in RI (input signal): G24 and G25
by using a machine instruction.
Parameters such as maximum spindle speed for the set gear stage
(one of four stages) and spindle override must be set in the
machine instruction.
(d) Based on the RI data ("8192), the CNC performs processing
related to the following two parameters, converts the maximum
motor speed into 16384, then transfers it to the aseries (Serial)
spindle.
Spindle speed command offset compensation parameter
No. 5613 = 0
Spindle speed command gain parameter No. 5614 = 1000