Pfeiffer
The Pfeiffer DCU 400 is a digital control unit for turbomolecular pumps with an integrated mains power unit. The DCU 400 provides a 48 V DC output at 8.4 A (approximately 400 W). The DCU 400 features a front LCD and keypad, and uses convection cooling.[1][2][3]

The DCU 400 is used with turbomolecular pumping hardware in vacuum systems. The unit is suited to pump control and monitoring in setups that require electronic drive control and pressure-gauge connection.[2]
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The following facts about the DCU 400 Digital Control Unit Turbomolecular Pump Controller are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the DCU 400 Digital Control Unit Turbomolecular Pump Controller are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the DCU 400 Digital Control Unit Turbomolecular Pump Controller are on record.
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The control-system platform and OS era of the DCU 400 Digital Control Unit Turbomolecular Pump Controller are not on record.
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No publicly documented failure modes or field errata for the DCU 400 Digital Control Unit Turbomolecular Pump Controller are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the DCU 400 Digital Control Unit Turbomolecular Pump Controller is not on record.
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Last updated Oct 11, 2026.
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