The Okuma OSP Control
Okuma developed its own numerical controller in 1963 and calls its control line OSP. On an Okuma machine the drive, motors, encoders, spindle, and CNC control all come from Okuma. Independent board repair shops list Okuma OSP controls next to Fanuc and Mazak controls.
Okuma Control Repair Shops
Flexa Systems
Lewisville, TX
Brands: Fanuc, Haas, Mazak, Okuma
Machine Tool Science
Gaffney, SC
Brands: DMG Mori, Fanuc, Haas, Mazak, Okuma
Batteries That Hold OSP Data
A coin battery on the back of the panel PC holds the BIOS settings and the time and date on the OSP-P300A, P300, P200A, P200, and P100. The UPS battery on the same controls gives the control power to shut down Windows properly when power is lost. On the OSP-P500 alarm 0945 MEMORY BOARD/BATTERY LIFE means that UPS battery is near the end of its life at about six years. All parameters in the control could be lost if the battery runs past that alarm.
Older controls hold more in battery-backed memory. On the OSP-E100 a battery pack holds the CMOS memory where the parameters live. The system software on that control sits on a flash drive. On the OSP-U100, 7000, and 5020 the battery pack holds CMOS memory with all the software as well as the parameters.
Backups and Alarms Before a Board Repair
Okuma ships each machine with its NC software media stored inside the control cabinet. A machine that loses its memory without that media could sit down for roughly 1 to 5 days while Okuma schedules production of Duplicate Software. Part programs, tool data, parameters, and ATC locations stored in the machine need their own timely backups.
Alarm 4085 FAN MOTOR ERROR ON PANEL COMPUTER UNIT means the CPU or power supply fan is running below its threshold speed. Okuma inspects the fans first and the panel computer only if the fans spin correctly. Alarm 758 SAFETY I/O ERROR often traces to a shorted solenoid or a switch damaged by coolant.