SF-PW, Mitsubishi SF-PW TROUBLESHOOTING, How to fix, How to
Contents
1. components or tracks in upper right corner If SF CA is damaged you need a complete drive Call CNCrepair com for further troubleshooting suggestions 3 Check FR SF 2 spindle drive power transistors see FR SF 2 drive troubleshooting If transistors are damaged you need a complete FR SF 2 Spindle Drive 4 Are the white connectors along the top of the SF CA black or charred If so this indicates you need a complete drive Call CNCrepair com for further troubleshooting suggestions HOW TO REMOVE SF PW from FR SF 2 xx frame 1 Turn of AC power to machine and verify that no stored charge exist in drive 2 Remove SF CA card 2 2 Phillips screws to SF PW and plastic tabs Lift SF CA card carefully off the SF PW s pins Do not bend or stress the pin connectors 3 Open FR SF 2 hinged frame cover 2 screws on left Remove 3 SF PW power supply wires with 2 Phillips driver Note 2 white wires and one green wire White wires are interchangeable Screw terminals are special metric thread do not lose them 4 Remove 4 more 2 Phillips screws that hold the SF PW to the hinged frame CNC Repair amp Sales Inc copyright 2014 by cncrepair com 1770 Front Street 142 Lynden WA Phone 408 331 1970 USA Fax 855 272 3765 sales cncrepair com2. SF PW Mitsubishi SF PW troubleshooting guide OVERVIEW The SF PW is the most unreliable sub assembly of Mitsubishi FR SF 2 Spindle Drives Mitsubishi used lower shelf components in OEM version SF PW Replacing the SF PW with a rebuilt unit from cncrepair com is good preventative maintenance CNCrepair com only uses top shelf components insuring a long life for your CNCrepair com rebuilt SF PW RELATED PART NUMBERS SF PW SF CA FR SF 2 11K FR SF 2 15K FR SF 2 18 5K FR SF 2 22K FR SF 2 26K AND FR SF 2 7 5KW WHAT TO LOOK FOR 1 Is the Amber LED lit with 200 VAC on R amp S If LED is lit SF PW power supply is probably OK Amber LED lockout takes 1 minute of power off to reset after winking out 2 Does the spindle drive fan s run Running fan s indicates 3 phase power is probably OK 3 ALWAYS replace worn out cooling fans CNCrepair com stocks all common fans COMMON PROBLEMS SF PW amber LED Winks out on Monday morning machine startup AND drive worked fine on Friday AND no visible damage on SF CA board OR SF PW winks out intermittently AND FR SF 2 will start OK after cooling off 1 Try replacing the SF PW power supply replace SF PW before drive problems get worse SF PW LED Winks out while running and will not restart after 1 minute power off rest 1 Was there smoke or loud pop noise Probably need complete drive Call CNCrepair com for further troubleshooting suggestions 2 Check SF CA board for physical damage burnt
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