9x20 Lathe Spindle Motor E-stop
Last updated on Saturday, March 25, 2023 02:17:34 PM Mountain US Time Zone

HOME

E-stop, Switch Wiring,
Upgraded Lathe Control Group

WARNING: SHOCK HAZARD
FIRST UNPLUG THE LATHE MOTOR FROM THE 110VAC OUTLET
It is good practice to activate the E-stop button while setting up the lathe.

E-stop

An emergency stop button for the BD-920N Jet lathe.
The housing was cut at 38 deg from an aluminum enclosure.

Switch Wiring

The stop button interrupts the hot,
110VAC line-in (L1).  BD-920N manual
The two red switch wires pass through
an insulating rubber grommet.

Though over-rated, the two switches (STDP) were wired
in parallel for redundancy & less current per contact.

The back panel bracket extends down
to allow attachment to the lathe's
steel switch cover using two,
10-32 bolts screwed into tapped holes.

Upgraded Lathe Control Group

Red E-stop, ON/OFF (Inhibit), variable speed
potentiometer, & CCW/CW spindle rotation direction.
The E-stop cuts the 110VAC to the entire lathe but
the spindle ON/OFF circuit utilizes dynamic braking.
This is a good E-stop location for me as this is
where I rest my left hand to manipulate the controls.
I also feel that when one is working close to the
lathe & the red button is located at the front of the
machine, it will be harder to hit stop due to the crowding
of one's arms & torso in that area. It is easier
to extend an arm & swat a button down than to
retract & push inward. These are personal preferences.
Also see the E-stop for the Taig CNC mill &
the variable speed DC spindle motor modifications.

 

 
Click on linked thumbnails #ad

E-stop, Switch Wiring,
Upgraded Lathe Control Group

HOME