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OKUMA Power Supply
Brand: OKUMA -
Cat: Power Supply
Code:DC-S1A
| Combination name | Availability | Price |
|---|---|---|
DC Power Supply Unit – OKUMA DC-S1A
The DC-S1A is a DC power supply unit (“DC Power Supply Unit”) manufactured by OKUMA, designed to supply regulated DC voltages to the electronic boards of OSP (Open System Platform) CNC control systems. The unit converts the AC mains supply into multiple stabilised DC rails required for the operation of CNC logic circuits, axis drives and interface peripherals. Documented on OKUMA machining centres and lathes fitted with OSP controllers of earlier generations; constructive variants may exist depending on the revision of the control system.
The DC power supply is the core of the CNC electrical infrastructure: without stable, filtered DC voltages no control board can operate. A failure of this unit causes the immediate shutdown of the entire control logic, halting the machine and making any machining cycle impossible. The quality of the output voltages directly affects the reliability of the whole system: even minor fluctuations or drops can corrupt parameters, damage downstream boards or generate intermittent alarms that are difficult to diagnose.
OKUMA Corporation (??????) is a Japanese CNC machine tool manufacturer founded in 1898 in Oguchi, Aichi Prefecture. It is one of the very few manufacturers in the world that designs and builds both its machine tools and its own CNC controllers (OSP – Open System Platform) entirely in-house, ensuring full hardware and software integration. Components of the DCS family belong to earlier controller generations that are now legacy / discontinued: available exclusively as used, surplus or through specialist repair.
Main Technical Specifications
| Type | DC power supply unit (DC Power Supply Unit) |
| Part number | DC-S1A (DCS1A) |
| Brand | OKUMA |
| Known application | OKUMA CNC machining centres and lathes with OSP controller (earlier generations) |
| Function | Generation and distribution of regulated DC voltages for CNC control boards, drives and peripherals |
| Input voltage | ~200–240 V AC, 50/60 Hz |
| Output voltages | ±5 V, ±12 V, ±15 V, +24 V DC |
| Protections | Overcurrent, overvoltage, short-circuit on each rail (typical) |
| Interfaces / connectors | Dedicated multi-pin connectors for OSP backplane and boards |
| Weight | ~1.5–4 kg |
| Dimensions | ~150–350 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
