
B–65162E/03
3. HOW TO SELECT THE POWER SUPPLY MODULE
55
Select a power supply module that satisfies the rated output capacity and
maximum output capacity, calculated as follows:
Select a power supply module with a rated output not less than the sum
of the total continuous rated output of the spindle motors times 1.15, plus
the total continuous rated output of the servo motors times 0.6.
Rated output capacity of
power supply module
Continuous rated output
of spindle motor
Continuous rated output
of servo motor
yΣ ×1.15
+Σ ×0.6
When only one spindle amplifier module is to be connected to a power
supply module, select the power supply module so that the 30–minute
rated output of the spindle motor does not exceed the rated output capacity
of the power supply module.
Rated output capacity of a power supply module y 30– minute rated out-
put of a spindle motor
Table 4.1.1 (1) lists the rated output capacities of the power supply
modules. Table 3.7.1 lists the continuous rated outputs of the servo
motors. Table 3.7.2 list the continuous rated outputs of the spindle
motors.
Select a power supply module with a maximum output not less than the
sum of the total accelerating maximum output of the spindle motors and
the total accelerating maximum output of those servo motors that
accelerate/decelerate at the same time.
When the rated output capacity is 11 kW or less, calculate the maximum
output capacity according to 3.3.2 (a), below. When the rated output
capacity is 12 kW or more, calculate according to 3.3.2 (b).
(1) For a rated output capacity of 11 kW or less
Maximum output
of power supply module
Accelerating maximum
output of spindle motor
Accelerating maximum output of servo motor
(for simultaneous acceleration/deceleration axis)
yΣ ×1.15
+Σ
×0.6
When the obtained value at the right–hand side is 20 kW or more,
calculate the maximum output capacity according to 3.3.2 (b).
(2) For a rated output capacity of 12 kW or more
Maximum output
of power supply module
Accelerating maximum
output of spindle motor
Accelerating maximum output of servo motor
(for simultaneous acceleration/deceleration axis)
yΣ
+Σ
3.3
HOW TO SELECT THE
POWER SUPPLY
MODULE (PSM)
3.3.1
Rated Output Capacity
3.3.2
Maximum Output
Capacity of Power
Supply Module