Vonsch Quatrofrem Series, Конфигурация и диагностика

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UNIFREM v.3.41x
10 May 2017 Page 149 from 180
Optimization – principle of the operation by maximizing the power using frequency
Example: Optimization operation on the drive
(thick line - OPT. Output, thin line - Power drain). In this case, the Start Direction (ID = 426) is set
to "From maximum".
A
– Optimization starting point found by
scanning. It will be configured accurately later
during fine tuning.
B
– Technological conditions change –
optimization output settling and finding the new
optimum point.
8.11 External thermal protection (ETP)
If there is a temperature sensor or system of multiple sensors of the same type on the device, of
which the frequency converter is a part, it is possible to connect these sensors into the converter
and evaluate the device temperature and if needed, generate warning or fault. ETP block
parameters can be found in:
Parameter ID: 860
SETTINGS
– > FUNCTIONS -> EXTERNAL THERMAL PROTECTION (ETP)
One free analog input and output are used to connect the temperature sensors.
Mathematical model calculates the optimal
"ETP Current" , which will be selected as a
signal of the corresponding AOUTx. Voltage drop occurs on AINx, AINx writes it into the
t [s]
Motor
power [W]
F
MIN
Frequency
[Hz]
START command
I. scanning
after start
F
MAX
II.
Fine tuning of
the maximal
power
III.
Technological
conditions change
– optimization
point shift
█ - optimization output (ID= 423) – connected to the frequency setpoint
█ - optimized signal (ID=80) – connected to the motor power
(OPT Output)
PAR.ID = 423