143
Auxiliary functions
Type 8792, 8793 REV.2
→
Select
INPUT
. The input screen for the value of the upper end position is opened.
→
/
OPN
Increase value
CLS
Changing the decimal place
Approach upper end position of the valve.
→
Select
OK
. Transfer and simultaneous return to the
CAL.POS
menu.
→
Select
EXIT
. Return to the
M.TUNE.POS.
menu.
→
Select
EXIT
. Return to the
Manual.TUNE
menu.
You have set the end position.
16.2.1.3.
M.TUNE.PWM
– Optimization of the PWM signals
In this menu the PWM signals for control of the aeration valves and bleed valves are manually optimized.
For optimization the actuator is aerated and bled. A progress bar on the display indicates the position of the
actuator and the speed of aeration and deaeration.
The setting is optimum when the progress bar moves as slowly as possible.
WARNING
Danger due to uncontrolled valve movement when the
M.TUNE.PWM
function is running.
When the
M.TUNE.PWM
function is running under operating pressure, there is an acute risk of injury.
▶
Never run
X.TUNE.PWM
while a process is running.
▶
Secure the device against accidental activation.
Optimize the PWM signals as follows:
→
/ Select
M.TUNE.PWM
.
→
Select
ENTER
.
The submenu is displayed.
yB.min
= aeration valve
y
E.min
= bleed valve
→
/ Select
yB.min
. Submenu for setting the PWM signal for the aeration valve.
→
Select
ENTER
. The input screen for setting the PWM signal is opened.
The progress bar indicates the speed of aeration.
→
/
+
Increase speed
-
Reduce speed
Minimize speed so that the progress bar moves as slowly as possible from left to right.
Note:
Do not minimize speed to such an extent that the progress bar remains in one position.
→
Select
OK
. Transfer and simultaneous return to the
M.TUNE.PWM
menu.
→
/ Select
yE.min
. Submenu for setting the PWM signal for the bleed valve.
→
Select
ENTER
. The input screen for setting the PWM signal is opened.
The progress bar indicates the speed of deaeration.
english
Summary of Contents for 8792
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