
10. INTERFACE SIGNALS
B–65162E/03
386
Maximum torque
of motor
(]30min. rated
torque_120%)
30min. rated torque
Continuous rated
torque
T
0
Spindle
motor
torque
[kg·m]
Motor
speed
Fig.10.3.2 (b) Spindle Motor Torque
10V
Maximum output
power of motor
(]30min. rated output
power 120%)
30min. rated output
power
Continuous rated
output power
8.3V
Motor speed
Lowered output
power region
Constant
torque region
Constant output
power region
Fig.10.3.2 (c) Voltage Used for Operating a Load Meter
D The relation between each spindle motor output and the indicating
voltage of the load meter is as shown in Table 10.3.2 (a), assuming
that the continuous rated output of the spindle motor is 100%.
D Four types of indications of the load meter may be considered
approximately from Table 10.3.2 (a). For the indication of the load
meter in this case, refer to examples shown in Table 10.3.2 (b).
D Machine tool builders are requested to prepare a load meter (DC
voltmeter) which complies with the following specification.
- One-side deflecting DC voltmeter
- DC voltage 10V, full scale
- Internal resistance 10 kΩ
Example)
DC voltmeter LM-80 made by KUWANO DENKI
D Use a 2-core shielded cable.