Mitsubishi SF-PWH Power Supply Unit for FREQROL FR-SF Spindle Drives

The Mitsubishi SF-PWH is a power supply unit for Mitsubishi FREQROL FR-SF spindle drive systems. It is used in FR-SF spindle controllers, including FR-SF-2 and FR-SF-4 series units, to supply voltage to the spindle drive section. The module accepts a single-phase 200-230 VAC, 50/60 Hz input and has a nominal 230 VAC rating. Its net weight is approximately 1.23 kg. Typical applications include CNC machine tools and production equipment that use Mitsubishi FREQROL spindle controllers, particularly repair cases where a faulty SF-PW or SF-PWH supply is linked to a dark seven-segment display. The SF-PWH is listed as obsolete, with SF-PWH30 (U710-1) given as the transfer reference, so the replacement route should be verified before ordering. Service documentation also identifies the SF-PWH as a Yamabishi power unit used with Mitsubishi FREQROL spindle controllers. The unit is also referenced as SFPWH. It is intended for maintenance, repair and replacement of Mitsubishi spindle drive power supply assemblies.