Tweco iCNC XT - Manual (Page 98)

iCNC XT
5-40 OPERATION Manual 0-5299
1. START: Select the start delay at which the timing is to begin execution, eg. SD4.
2. PIERCING UP: Enter the desired time to raise the torch for piercing.
3. STAY UP: Enter the desired time to stay up before the pierce lowering time begins.
4. PIERCING DOWN: Enter the desired time to lower the torch to the cutting height.
Note:
The piercing up and piercing down timer values are usually set to equal amounts as not to create a ramping or stepping effect.
This is also true with the primary raise and lowering of the torch when no automatic capacitive height sensor is installed.
Examples: SD4 starts the event timing sequence for piercing up/down routine. The initial values for piercing up time - stay up time and piercing
down time are set to 1 second for this example.
1. Cutting oxygen turned on as torch raises to piercing height. Set SD4 value from .1-.9 seconds.
2. Cutting oxygen turned on during stay up time. Set SD4 value from 1.1-1.9 seconds.
3. Cutting oxygen turned on while torch lowering to cutting height. Set SD4 value from 2.1-2.9 seconds.
Start Move Delay is the time allocated for the initial piercing through the material. After this time has expired, motion automatically begins.
ED1 is the fi rst delay executed after the program is fi nished or the cut manually interrupted by the operator. This delay is usually used for the
primary raising of the torch after completion of the current cut. This allows the torch to clear any parts, which may have tipped up preventing
damage or misalignment of the torch. Set the value to zero to prevent the torch from raising after completion of a cut.
ED2 is typically not used.
End Move Delay is typically used to allow excess cutting oxygen to bleed off through the cutting tip before rapid traverse to the next piercing
location occurs. This prevents the cutting stream from nicking prior cut parts when the traverse path is directed over a part. Typically set to
1-2 seconds when the cutting oxygen valve is located on the inlet of torch. If the cutting oxygen valve is located on the gas manifold, allow
additional time.
5.13.6. Info
The info fi eld is used for writing down notes about the current parameter set (material, thickness, tool).