Burkert Type 8793 - Manual (Page 171)

171
Auxiliary functions
26.3.1.3. 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 M.TUNE.PWM while a process is running!
• Secure system against unintentional activation!
Optimization.of.the.PWM.signals
Key Action Description
/ Select M.TUNE.PWM
ENTER Press 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.
ENTER Press
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 pos-
sible from left to right.
Caution! Do not minimize speed to such an extent that the progress
bar remains in one position.
OK Press
Transfer and simultaneous return to the M.TUNE.PWM menu.
/ Select yE.min Submenu for setting the PWM signal for the bleed valve.
ENTER Press
The input screen for setting the PWM signal is opened.
The progress bar indicates the speed of deaeration.
/ Increase speed
Reduce speed
Minimize speed so that the progress bar moves as slowly as pos-
sible from right to left.
Caution! Do not minimize speed to such an extent that the progress
bar remains in one position.
OK Press
Transfer and simultaneous return to the M.TUNE.PWM menu.
EXIT Press Return to the Manual.TUNE menu.
Table 97: M.TUNE.PWM; optimization of the PWM signals
english
Type 8792, 8793