The (often listed as VAT23-D-...) is an older series of AC inverters manufactured by GE Power Controls (General Electric).
: A common reference for GE Fanuc VAT series options and fault codes is available at Efes Otomasyon . vat23d inverter manual pdf better
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: Today, these drives are mostly found in older HVAC systems or manufacturing lines. Because GE Industrial Systems evolved, many users now "cross-reference" these manuals with newer GE Fuji or Teco drives to keep the old machinery running. The (often listed as VAT23-D-