MK Products Advanced Color Logic Rev.C - Manual (Page 44)

Advanced Color Logic Owner’s Manual - Page 39
FEEDBACK VOLTS (to the right of the Voltage Bar Graph on the bottom of
the monitor screen) by pressing the PAGE UP or PAGE DOWN buttons on
the HHC, until the values equals that which is shown on the DMM. Each
button press is equal to 1/100 V scale adjustment.
Record each of the final display values on the data sheet.
Press [START/STOP] on the HHC when complete. Repeat if necessary.
Verify that each of the recorded values equal = Input Voltage ± 0.2VDC.
Rotor Speed Calibration
The weldhead control connector on the weldhead cable should be plugged
into the ACL. Be certain the there is no obstruction in the weldhead - the
rotor must turn for this test to work.
Once connected, with the ACL in TEST Mode, press [START/STOP] on
the HHC. The ANA_CAL procedure will enter Level 1 and the rotor will
start rotating.
Press [NEXT LEVEL/GAS] on the HHC to jump to the next level, thus
changing the rotor speed to the next RPM value. This will occur whenever the
[NEXT LEVEL/GAS] button is pressed.
At each DEMAND RPM (which is that RPM value in the ANA_CAL
procedure), adjust the ACTUAL RPM of the weldhead rotor (displayed to
the right and below of the RPM Bar Graph at the bottom of the monitor
screen) by pressing the RIGHT ARROW or LEFT ARROW on the HHC,
until the ACTUAL RPM equals that of the DEMAND RPM. Each button
press is equal to 1/200 RPM output adjustment.
Once an adjustment is made to the ACTUAL RPM, wait until the rotor
makes two complete revolutions before making secondary adjustments to
the ACTUAL RPM. The ACTUAL RPM is updated after the second rotor
revolution and every subsequent revolution past the “Home” position.
Once the ACTUAL RPM value is set equal to the DEMAND RPM value,
the FEEDBACK RPM (displayed just to the right of the RPM Bar Graph at
the bottom of the monitor screen) must be adjusted to equal that of the
ACTUAL RPM value. Pressing the % MOTOR SCALE UP or % MOTOR
SCALE DOWN on the HHC accomplishes this. Each button press is equal
to 1/200 RPM feedback adjustment.
Record each of the final display values on the data sheet.
Verify that each of the recorded values = (DEMAND RPM ± 0.5 RPM) or
(DEMAND RPM ± 1%), whichever is greater.
Press [START/STOP] on the HHC when complete. Repeat if necessary.
Current Calibration
From the Calibration Kit to the ACL; connect the torch lead to the BLACK
connector, the ground lead to the GREEN connector and the torch purge gas
connector to the ARC GAS port on the rear panel of the ACL. The weldhead
control connector on the weldhead cable should be plugged into the ACL.
Be certain the there is no obstruction in the weldhead - the rotor must turn
for this test to work.
Connect the DMM to the CURRENT SHUNT side of the shunt box, positive-
to-positive and negative-to-negative. Set the DMM to read up to 50 mVDC.
If the leads between the DMM and the shunt are reversed, the readout
on the DMM will show negative mV values. To correct this; simply
reverse the leads either at the DMM or at the shunt.
Section D
(Cont.)