Siemens A07408 fault code meaning
Siemens / A07408
Series: G200, G210, G210X, G220, S220
Drive: Minimum DC bus voltage controller disabled
converter
Meaning: The Vdc_max controller cannot keep the DC bus voltage (r0070) below the limits (r1242, r1282) and therefore disables itself. - The mains voltage remains above the voltage specified for the power unit. - During regenerative operation, the motor is continuously driven by the load. See also: p1259 (Vdc controller configuration)
Possible causes
Source: SINAMICS G200 Converter P711; SINAMICS G210 Converter P1108; SINAMICS G210X Converter P970; SINAMICS G220 Converter P1325; SINAMICS S220 Converter P2283