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CNC Power Supply Module – OKUMA MPR10
The MPR10 is a CNC control power supply module (“CNC Power Supply Module”) manufactured by OKUMA, used in the electrical cabinets of CNC machine tools equipped with proprietary OSP (Open System Platform) control systems. The module converts and regulates the supply voltages required by the control boards, axis and spindle drives, and other electronic subsystems of the CNC. The part number is MPR10.
The power supply module is a fundamental element of the CNC system: it converts mains voltage into regulated, filtered DC voltages distributed to all control boards and electronic subsystems. Without regulated power the control system cannot start up and the machine is completely inoperative; a failure of this module typically manifests as a total loss of communication between the control and drives, or as non-clearable power alarms.
OKUMA Corporation is a Japanese manufacturer founded in 1898 in Nagoya, specialising in CNC machine tools (machining centres, lathes, grinding machines) and its own proprietary OSP (Open System Platform) control systems. The high degree of integration between machine and control makes OKUMA electronic components non-interchangeable with those of other manufacturers; products of this generation are legacy / discontinued and available only as used, surplus or through specialist repair.
Main Technical Specifications
| Type | CNC power supply module (Power Supply Module) |
| Part number | MPR10 |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machine tools with OSP control (machining centres, lathes) |
| Function | Conversion and regulation of supply voltages for CNC control boards and drives |
| Input voltage | 200–230 V AC, three-phase / single-phase (typical) |
| Output voltages | +5 V, ±15 V, +24 V DC (typical) |
| Output current | ~5–15 A per rail |
| Interfaces | Internal connectors on OKUMA CNC cabinet bus; mains terminal strip |
| Weight | ~2–5 kg |
| Dimensions | ~200–350 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |