 When auto height control is proceeding it can ensure (Page 8 / 49) THC System Manufacture Manual F1620 Arcbro

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 When auto height control is proceeding, it can ensure that practical arc voltage follow

setting arc voltage is closely, it hardly has error.

 When auto height control is proceeding, it also can change the arc voltage setting value,

it is easy to change torch height slightly when torch is working.

 When auto height control is proceeding, collision signal can feedback for numerical

control system, it can avoid that numerical control system is marching after collision.

 When auto height control is proceeding, it can use function which arc voltage can be

adjusted by machine auto control

 After torch has accomplished, THC can automatic promote torch height, and height

which we promote can setting casually.

1.3 Function of equipment

1. Auto initial height sensing(IHS)

The way of IHS has the detection way of proximity switch and the detection way of torch

retaining cap collision.

 Proximity switch location detection

Our equipment uses NPN model proximity switch (or PNP model proximity switch), proximity

switch is contacting when it do not work. When down testing or arc down initially, if torch collide

workpiece(or if collide workpiece make torch tilt), proximity switch will break away from, then

detection voltage can check this signal, it can promote the touch height which down

initially(height can change by the panel spin button named “down height”). When proximity

switch is breaking away from for long time, torch can keep straight rise until it collide upper limit

of motor.

 Torch retaining cap collision detection

When we test collision by torch retaining cap, if torch retaining cap connect with work piece,

detection voltage can be start and promote the touch height which down initially(height can

change by the panel spin button named “down height”). After torch rise, torch retaining cap

depart from work piece and collision signal reset at once. If torch retaining cap signal is keeping

for long time, torch can keep straight rise until it collide upper limit of motor.

 Dual speed of IHS

Unique Solution