Portable Plasma Torch Height Controller Manual (F1620)
¾ It can suit external working conditions by changing parameter, so we need not
change hardware within equipment.
¾ It can change the electrical level of input signal which is useful. The input
signal acquiesce in low electrical level is useful. The high electrical level is
useful when we change it.
¾ Input and output is insulated by optocoupler, it is useful to protect equipment
from damage when voltage is bigger and electromagnetism pulse is disturbed.
¾ The arc start relay and the arc start prosperity relay is omron power relay, so it
is reliable when it work.
¾ It can observe the electrical level in work process.
¾ The different work process is mutual seal, it can avoid operate fault.
¾ When THC have a delay of boring a hole, it can use function which it can
dynamic bore a hole after arc start is start.
¾ It can monitor whether arc start have been start in torch process, if it detect that
arc is breaking off, the THC can inform CNC in time and turn off the arc start
relay, it can avoid to cite arc for empty when arc is breaking off.
¾ When auto height control is proceeding, it can ensure that practical arc voltage
follow setting arc voltage is closely, it hardly have error.
¾ 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.
¾ 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.
¾ When auto height control is proceeding, it can use function which arc voltage
can be adjusted by machine auto control
¾ After torch have 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 have the detection way of proximity switch and the detection
way of torch retaining cap collision.
¾ Proximity switch location detection
Our equipment use 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
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