
B–65162E/03
10. INTERFACE SIGNALS
409
D The output frequency of the AC spindle motor can be indicated by
externally connecting a speedmeter.
A voltage (DC) proportional to the rotation speed is output,
irrespective of the forward or reverse rotation of the motor. A +10V
is output at the maximum frequency.
+10V
0V
0min
–1
Output
voltage
(DC)
Motor rotation speed
Max. output frequency
D Use the following speedmeter
(DC voltmeter)
- One-sided deflection DC voltmeter
- DC voltage 10V full scale
- Internal resistance higher than 10 kΩ
Example)
DC voltmeter LM-80: Kuwano Electrical Manufacturing Co., Ltd.
D For deteils of connection cable and connectors, refer to
9.3.6(3).
D Due to the construction of internal circuit, there exists about
10mV (0.1%) ripple at the output of SM terminal
D This signal can be used for load meter by setting the
parameter (PRM4007#4=1 : series 16). The load meter
outputs +10V when the spindle motor exhibits its maximum
output.
Parameter
FS0 FS15 FS16
6507#4
6607#4
3007#4
3147#4
4007#4 Selects type of data output from SM ter-
minal
0 : Frequency data
1 : Load meter data
10.5
SPINDLE AMPLIFIER
OUTPUT SIGNALS
(αC SERIES SPINDLE)
10.5.1
Output Frequency
Display Signal (SM)
(Usable as Load Meter
Voltage Signal
According to
Parameter Setting)