CHAPTER 10 PERIPHERAL EQUIPMENT

10.5 Surge Absorber

10

 For protection from lightning surge

Install a surge absorber to protect servo system from the surge approaching from the power

line (induced lightning surge).

Serge absorber absorbs lightning surge, preventing malfunction or damage of a servo

system.

Recommendation [Soshin Electric product］

Single phase: LT-C12G801WS *

Three-phase: LT-C32G801WS

* The product for single phase has no L2 terminals.

<External dimensions>

Operation

display windows

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L3 L2 L1

L3 L2

Vinyl electric cables

Grounding terminal

L1

Temperature

fuse

ZnO element

Discharge gap

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 For protection from open/close surge of peripheral equipment

To install a surge absorber to peripheral equipment (electromagnetic contactor, solenoid,

electromagnetic brake, etc.) of the servo amplifier, use the following one.

When an inductive load such as the clutch and solenoid is turned off, a counter electromotive

force of several hundreds or several thousands of volts [V] is generated. The surge absorber

suppresses the surge voltage.

For DC devices, install a diode to suppress the surge voltage.

10-12 Surge Absorber