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Micromill Spindle Motor Stopped
Posted: Thu 15 Nov , 2007 17:45 pm
by boots
Micromill Std.
Turned spindle switch to "ON" position and spindle motor "stuttered" on-off. Turning spindle switch on & off several times seemed to help.
Now the spindle will not turn on at all.
Any suggestions would be appreciated.
Posted: Thu 15 Nov , 2007 17:46 pm
by boots
The switch, the spindle motor, the fuse or the spindle speed knob control may have gone bad.
Check/replace the spindle fuse first, also check for any loose or cracked wires in the spindle circuit.
Check voltage at the spindle speed control card with a volt/ohm meter.
I checked the voltage on a machine here at the shop.
118vAC Wall Outlet
118vAC L1 L2 (Blue & Brown wires) on Spindle Speed Card
129vDC A+ A- (Red & Black wires) on Spindle Speed Card, with the speed set at 100% on the Control Panel and the Spindle Speed Override Knob turn all the way to the right. I also checked AC across these wires and read 13vAC.
I’m sure your voltages may not be the same, but it should give you an idea of what to look for.