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4 System Design
CJ2 CPU Unit Hardware User’s Manual
4-5 Using DC Power Input
4
4-5 Using DC Power Input
The following Servo Drive models allow you to use DC power input for the main circuit and control
power supplies, in addition to AC power input.
• R88D-KN75H-ECT
• R88D-KN150H-ECT
No Servo Drive parameter change is necessary to switch from AC to DC power input, or vice versa.
Precautions for Correct UsePrecautions for Correct Use
• To use DC power input for the main circuit and control power supplies, connect the positive
wires to L1 and L1C and the negative wires to L3 and L3C of the terminal block (TB1).
• Shutting off the main circuit power takes some time to discharge electricity. Beware of
electrical shock because high voltage may remain in the Servo Drive after power shut OFF.
Before carrying out wiring or inspection, turn OFF the main circuit power, and wait for at least
15 minutes.
• Do not connect any power supply to B1 and N. Doing so may cause damage to internal
elements.
• Do not insert/remove the terminal block with the main circuit power supply ON. Doing so may
cause an arc flash, resulting in burning.
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