Piranha IRONWORKER P90, Operation Manual

Page: 16 / 53

Operating Instructions 16
Footswitch Limit Switches
The footswitch is used in conjunction with the upstroke and downstroke limit switches
located on the machine side off the front control box only, see figure C.
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The front limit switch (closest to the punch end and the lower switch of the two
switches) controls the downstroke limit.
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The back switch (furthest from the punch end and the higher of the two switches)
controls the upstroke limit.
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The limit switches are activated by the limit switch arms: Item number 60, shown on
page number 31.
To set the stroke using the limit switch arms, use the following procedure:
1. Plug in footswitch.
2. Turn toggle switch to "ON" position.
3. Loosen thumbscrew on down stroke limit-switch arm.
4. Fully depress footswitch lever allowing beam to move downward.
5. Slide limit switch arm until contact with the down stroke switch stops beam movement
at the desired lower limit.
6. Tighten thumbscrew to hold limit switch arm firmly in place.
7. Loosen thumbscrew on upstroke limit-switch arm.
8. Allow footswitch lever to elevate allowing beam to rise.
9. Slide limit switch arm until contact with the upstroke switch stops beam movement at
the desired upper limit.
10. Tighten thumbscrew to hold limit switch arm firmly in place.
NOTE : When punching or using the bending attachment, set upper and lower limits to
allow for 1/4" maximum clearance between the bottom of the punch and the top of the
work material. The setting will change when the work material thickness changes.
NOTE : The downstroke limit switch on the punch end controls the upstroke limit on the
coper end. The upstroke limit is the only switch controlled from the rear control box
footswitch control. The operator controls the downstroke limit by allowing the footswitch
lever to fully elevate after the upper coper knife passes through the material.