Liquid cooling management
Cycle duration of the PWM signal
minimum PWM On pulse, which is always output even if the heat sink temperature
is lower than the setpoint.
maximum PWM control factor
ud53[10]:
0…5.00 seconds
ud55[10]:
0…6.00 seconds
The result of the PI controller output * PWM period is the length of the set-on
pulse.
The pulse is suppressed if this set-on pulse is < ½ * PWM minimal pulse length.
If the set-on-pulse length is > ½ * PWM minimal pulse length but still below PWM
minimal pulse length, PWM minimal pulse length is already output.
Example:
The PWM period duration is set to 8 seconds.
The minimum pulse length is set to 400ms. => 400ms = 5% of the period duration.
If ud53[10] PWM actual load < 2.5%, the pulses are suppressed
If ud53[10] PWM actual load is between 2.5% and 5%, 400ms pulses are output
If ud53[10] PWM actual load is greater than 5%, the pulse length is proportional to the
controller output.
Control setting of the PWM in %
At the beginning of each new PWM period the actual control setting is calculated
from the average of all PI controller output values of the last period.
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