
3. HOW TO SELECT THE POWER SUPPLY MODULE
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Table 4.1.1 (a) lists the maximum output capacities of the power supply
modules. Table 3.7.1 lists the accelerating maximum outputs of the servo
motors. Table 3.7.2 lists the accelerating maximum outputs of the spindle
motors.
Multiple servo amplifier modules and spindle amplifier modules can be
connected to a single power supply module, provided the above output
capacity conditions are satisfied.
The table below lists the maximum number of modules which can be
connected.
2
6
4
3
Maximum number of modules that can be connected
SVM
SVM1
SVM2
SVM3
SPM
SPMC
NOTE
1 When different types of servo amplifier modules are
connected, the following condition must be satisfied:
6 y Number of SVM1s×1+
Number of SVM2s×1.5+Number of SVM3s×2
The maximum number of servo amplifier modules that
can be connected is the same when a spindle amplifier
module is not used.
2 When SPM–30 is used, PSM–26 and power supply
modules with a capacity less than or equal to the
capacity of PSM–26 cannot be used.
When using SPM–45, use PSM–45.
When a machine, such as a press, with which a machining cycle is
performed frequently is used, select a PSM so that the total maximum
output of those axes that are accelerated/decelerated simultaneously does
not exceed the value 1.5 times greater than the rated continuous output.
Therefore, the PSM is selected as follows:
Motor PSM+SVM
α300/1200 PSM–37+SVM1–240 2
α400/1200 (PSM–30+SVM1–240) 2
3.3.3
Number of Connected
Servo Amplifier
Modules and Spindle
Amplifier Modules
3.3.4
Selecting a Power
Supply Module When
the Machining Cycle
Frequency is High
Examples