Pg 3.12 H22
CONSISTENT INACCURACY
(make sure blade kerf value is correct)
- change "Actual Pos." parameter to 1.
This will make the PLC show actual shuttle travel in AUTO
With no material in the machine:
- program JOB 1 for 2 pieces of 5" length, JOB 2 for 2 pieces of 10" length, and JOB 3 for 2 pieces
of a length as one shuttle will allow.
- enter JOBS 1, 2 and 3 into QUEUE.
- record measurement on the display each time the shuttle vise reaches the target length and
closes. It should equal the required length plus the programmed kerf value. Check that this
measurement is +/-.002" for each length.
If the overshoot /undershoot is very inconsistent, it could be related to an incorrect shuttle cushion
period. This may be caused by "Decel. Dist." parameter being set too low, defective fast or reverse
output relays on the PLC, or the hydraulic cushion valve (located at the hydraulic manifold) may be
faulty.
LINEAR INACCURACY
(not valid for machines with linear encoder)
v) - load machine with a piece of stock for test cutting
- open parameters screen
- initiate length calibration (see 3.17)
- re-enter new ACT LTH (Actual Length) value
- recut test lengths and check if accuracy is satisfactory.
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