ElmoMC ExtrIQ Digital Servo Drives-Hawk - Manual (Page 29)

Hawk Installation Guide Installation
MAN-HAWIG (Ver. 1.401)
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3.8.3. Shared Supply
A “Main” DC Power Supply can be designed to supply power to the drive's logic as well as to
the Main Power (see Figure 7 and the upper portion of Figure 9). If backup functionality is
required for continuous operation of the drive’s logic in the event of a main power-out, a
backup supply can be connected by implementing “diode coupling” (see the Aux. Backup
Supply in Figure 9).
Note: Elmo’s Evaluation Board (Catalog number: EVA-WHI/GUI/BEL) implements diode
coupling on the board. When you create your own PCB, you need to implement diode coupling.
Figure 9: Shared Supply Connection Diagram