Siemens 300875 fault code meaning
Siemens / 300875
Series: SIMODRIVE 611D
Fixed DC bus voltages differ between axes
servo drive
Meaning: An unequal fixed voltage MD1161: $MD_FIXED_LINK_VOLTAGE (DC link fixed voltage) has been found for axes of a drive module. Since a fixed voltage <> 0 replaces the measured DC link voltage value, but the DC link voltage value is measured only once for all axes of a drive module, the fixed voltage must be identical on all module axes before it is accepted.
Possible causes
Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS