
B–65162E/03
3. HOW TO SELECT THE POWER SUPPLY MODULE
65
When selecting a power supply module (PSM–HV), calculate the rated
output capacity and maximum output capacity as explained below, then
select an appropriate PSM–HV that satisfies these calculated values.
Multiply the total continuous rated output of the spindle motors by a
coefficient (1.15), and also multiply the total continuous rated output of
the servo motors by a coefficient (0.6). Then, select a power supply
module so that the sum of the multiplication results does not exceed the
rated output capacity of the power supply module.
Rated output capacity of
power supply module
Spindle motor continuous
rated output
Servo motor continuous
rated output
yΣ ×1.15
+Σ ×0.6
When only one spindle amplifier module is connected to a power supply
module, the power supply module must be selected 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
For the rated output capacities of the power supply modules, see Table
4.2.1 (a). For the continuous rated outputs of the servo motors, see Table
3.7.1. For the continuous rated outputs of spindle motors, see Table 3.7.2.
Select a power supply module so that the sum of the total maximum
output of the spindle motors at acceleration and the total maximum output
of simultaneously accelerated/decelerated servo motors at acceleration
does not exceed the maximum output capacity of the power supply
module.
Maximum output capacity of
power supply module
maximum output of spindle
motors at acceleration
maximum output of servo motors at acceleration
(simultaneously accelerated/decelerated axes)
yΣ
+Σ
For the maximum output capacities of the power supply modules, see
Table 4.2.1 (a). For the maximum outputs of the servo motors at
acceleration, see Table 3.7.1. For the maximum outputs of the spindle
motors at acceleration, see Table 3.7.2.
3.6
SELECTING A
POWER SUPPLY
MODULE (PSM–HV)
3.6.1
Obtaining the Rated
Output Capacity of a
Power Supply Module
3.6.2
Obtaining the
Maximum Output
Capacity of a Power
Supply Module