Setup & Operation
Control Setup
Setup & Operation
AS00doc032519
2-14
2
Rev. A.00 - A.03 Only:
The PID settings allow you to calibrate the Accuset control. Cali-
bration may be necessary if Accuset does not accurately position the saw head to the
desired cutting position.
IMPORTANT!
Before adjusting the Accuset calibration set-
tings, make sure the up/down chain is clean, lubricated and
adjusted properly. Also check the saw head slide pads are
adjusted properly and the mast rails are clean and lubri-
cated.
See Figure 2-12.
To adjust the Calibration Settings, push the PID Values button. Select the PID set-
ting you would like to adjust:
Kd
(Derivative Gain) - This value controls how Accuset stops the saw head when it
nears the desired setting increment. Increasing this value may improve Accuset
accuracy but will also slow down the speed at which the saw head moves to the
desired increment setting. The factory Kd setting is 35.
To adjust the Kd setting, press the Kd button then use the Up or Down buttons to
raise or lower the value. Adjust the Kd setting in intervals of 5 and check the perfor-
mance of the Accuset control. If you reach the upper or lower Kd limit without
achieving desired results, reset Kd to 35 and adjust Ki as described below.
Ki
(Integral Gain) - This setting affects the descent and stopping rate of the saw
head. The factory default setting of Ki is “3” and will work for most sawmills. Small
adjustments (no more than ±1) of the Ki setting may improve performance on a spe-
cific sawmill depending on the mechanical condition of the sawmill up/down system.
To adjust the Ki setting, press the Ki button then use the Up or Down buttons to
raise or lower the value. Desired values are in the range of 1-5.
FIG. 2-12
Kp
> 1<
Exit
Now
Ki
3
PID UKP 0
3H0821-5
1872 0
