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Testing Limit
Switches
If the Model G0931 is no longer homing properly,
or one or more axes is unresponsive, test each
limit switch for proper operation.
Item Needed
Scrap Iron or Steel ............................................ 1
Multimeter .......................................................... 1
To test limit switch:
1.
Turn machine ON and press OK at
"HomeTypeAtStart" to home all axes.
— If machine does home properly, all limit
switches are working correctly.
— If machine does not home properly, pro-
ceed to Step 2.
2.
Press STOP, then press MENU twice to
access voltage parameter screen shown in
Figure 44.
Voltage Parameters
1
2
3
4
1
2
3
4
Figure 44. Voltage parameter screen.
Model G0931 (Mfd. Since 02/21)
Qty
5
6
7
8
5
6
7
8
3.
Touch each limit switch target with a scrap
piece of iron or steel (see Figure 45).
Touch Here
Figure 45. Limit switch target.
4.
Verify direction of arrow below each of the
top row axes 1–3 (1=X-axis, 2=Y-axis, and
3=Z-axis) in Figure 44, ensuring each points
up when corresponding limit switch target is
touched.
— If arrow does point up, and test light on limit
switch does illuminate, limit switch is work-
ing properly. Proceed to Troubleshooting
on Page 42 and test additional control
systems.
— If arrow does not point up, and test light on
limit switch does not illuminate, proceed to
Step 5.
Note: Limit switches have a red light that will
illuminate when the limit switch is activated.
5.
DISCONNECT MACHINE FROM POWER!
-45-
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