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搜尋常見問題
Can you use an external 24vdc supply for the STO circuit on an ATV340?

Issue:

Customer wants to use an external 24VDC supply on just the STO terminals.

Product Line:

ATV340

Environment:

All

Cause:

Separate external 24VDC for STO

Resolution:

Yes an external 24VDC supply may be used for the STO circuit. See example diagram below.

The external supply must follow recommendation below:

The cable must be a shielded cable and connected to the earth like shown on STOA/STOB wiring ( on picture above)

All these recommendation are described in both:

ATV340 installation manual. See link below :

https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=ATV340_Installation_manual_EN_NVE61069_03.pdf&p_Doc_Ref=NVE61069

and ATV340 Embedded safety function manual. See link below:

https://download.schneider-electric.com/files?p_

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