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IS810N-INT Series Servo System User Manual (Brief) Chapter 4 Wiring
4.3.3 24 V Control Power Supply
The power supply of the drive unit is divided into the control part and the power part. The
control part is preferentially powered by the DC busbar that is connected to the power supply
unit. It is recommended to synchronously connect the 24 V switch-mode power supply of the
drive unit to an external power supply. This ensures that power supply to the control part of
the drive unit is not affected after stop due to any fault of the power supply unit.
Note that the 24 V terminal in the drive unit must be correctly connected as shown in the
following gure:
Figure 4-3 Cascade of multiple 24 V control power supplies
24 V power
interface for the
previous device
24 V power
interface for the
next device