Shibaura CA20-M10, Operating Manual, Page: 367 / 384

20
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20.4 Selecting the power supply
The each power supply of CA01-S05 is the list shown below.
If capacity of the drive power supply is insufficient, low power output, low torque, and other
problems can occur that prevent full performance during operation.
Power supply capacity
Power supply Voltage Capacity Notes
Control power supply 24 V DC±10% 0.25 A
Drive power supply 24 V DC±10% 3 A Rating (Max. 9 A)
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When connecting multiple controllers
If multiple controllers are connected to a single power supply, a power capacity
equivalent to the sum of the power capacities of the power supplies of each
controller is required.
However, in cases where axes do not operate simultaneously, the power capacity
can be reduced for the drive power supply based on the operation pattern.
For example) When two units are connected
Control power supply : 0.25A x 2 = more than 0.50A
Drive power supply :
9A x 2 = more than 18A (In case two axes accelerate or decelerate at same time)
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Regenerative operation
If the motor decelerates suddenly or rotary torque is applied externally, the
regenerative operation can generate a back electromotive force, which can cause an
increase in drive voltage.(Refer to section 20.10)