BUG-O Systems BUG-9870 - Manual (Page 5)

5
INTRODUCTION
The BUG-O Stepper Module is an adjustable, timed output, power control, that is typically used to
overlay the surface of a shaft mounted in a lathe or on turning rolls where a weld bead is continuously
laid down, side by side, with each revolution.
Advance of the weld bead is a function of how long the BUG-O, or other tractor, is powered by the
Stepper Module when limit switch is activated and the speed of the BUG-O.
TECHNICAL DATA
Voltages: BUG-9870 120/VAC/50-60Hz/1Ph
BUG-9872 240/VAC/50-60Hz/1Ph
BUG-9874 42/VAC/50-60Hz/1Ph
Output Current
Capacity: 3.25 AMPs
Net Weight: 3.5 lbs. (1.5 kg)
L W H
Dimensions: 5.75" x 5.75" x 3.5"
(147 mm x 147 mm x 89.3 mm)
Timer range: 0.1 to 9.9 seconds
ITEMS SUPPLIED
Complete Stepper Module Assembly including one (1) BUG-9875 Stepper Module Switch Assembly
with 8' (2.4 m) long cable.
SPECIFICATIONS
Set time is displayed digitally as #.# and ranged from a minimum setting of 0.1 to a maximum setting of
9.9 seconds.
The Limit Stitch must be securely mounted in-line with a trip mechanism (such as a weld bead, screw
head or flag) that will actuate the limit switch once per revolution of the part. This trip mechanism
actuates the limit stitch and powers the BUG-O to move. Based on the Stepper Module’s set time and
the speed setting on the BUG-O tractor, the BUG-O will move and stop, advancing the weld. Welding
does not stop when the BUG-O moves.
This sequence continues until the operator manually stops the BUG-O and/or the welding process.
NOTE: Limit Switch must be “released” to reset for the next sequence. If the limit switch is not
“released”, the BUG-O will not advance. Check setup and confirm the limit switch resets.