Tormach 1300PL, Operator'S Manual

Page: 69 / 100

9: TROUBLESHOOTING
©Tormach® 2020
Specifications subject to change without notice. Page 69 UM10720: 1300PL Operator's Manual (Version 0820B)
For the most recent version, see tormach.com/support
Cause: THCT not communicating with Machine Control Board
Probability How-To Steps Need More?
Low
1. Verify that the THCT board power LED is on
2. Using a multimeter that can measure frequency, measure the signal
between wires 444 and 445 . You should read a value between 80 kHz and
120 kHz.
l
If you don't read any frequency, you may have a faulty THCT board.
Contact Tormach Technical Support.
3. Have a helper press the TEST TORCH button in PathPilot and check the
frequency. You should read a frequency above 200 kHz (usually about 450
kHz).
4. If you read a frequency in both tests, check the connections for wires 444
and 445 at the Machine Control Board. Reference the machine wiring
diagram to make sure they are in the correct terminal blocks and firmly
seated.
The THCT communicates measured
voltage from the plasma source back
to the Machine Control Board using a
differential frequency signal. This is
much more immune to noise than a
analog voltage.
9.4 TORCH HEIGHT CONTROL
9.4.1 Torch Cuts Too High
Cause: M210 Torch Height Control Voltage Set Too High
Probability How-To Steps Need More?
High
If using
M200
AutoFS, ensure that you have selected the correct material
and consumables on the Main tab of PathPilot.
If you are manually specifying voltage using the
M210
M-Code, verify that
the P value in your G-Code is appropriate for the feed rate, cut current and
consumables you are using according to the manufacturer's cut charts.
THC target voltage is set automatically
when you select a material on the
main PathPilot screen and use the
M200
AutoFS function in your G-Code.