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Elmark Automatyka S.A.
ul. Niemcewicza 76, 05-075 Warszawa, tel. (+48) 22 773 79 37; [email protected]; www.elmark.com.pl
NIP: 5252072585; KRS: 0000803828, Sąd Rejonowy dla M-St. Warszawy, XIV Wydział Gosp. KRS; Kapitał Zakładowy 525.000 zł, w pełni opłacony
Figure 4-22 AC drive action diagram upon instantaneous power failure
Figure 4-22 AC drive action diagram upon instantaneous power failure
P9.63
Protection upon load becoming 0
Default
0
Setting Range
0
Disabled
1
Enabled
P9.64
Detection level of load becoming 0
Default
10.0%
Setting Range
0.0% ~ 100.0% (rated motor current)
P9.65
Detection time of load becoming O
Default
1.0s
Setting Range
0.0s-60.0s
If protection upon load becoming O is enabled, when the output current of the AC drive is lower than the detection level (P9.64)
and the continuous time exceeds the detection time (P9.65), the output frequency of the AC drive automatically declines to 7% of
the rated frequency. During the protection, the AC drive automatically accelerates to the set frequency if the load resumes to be
normal.
P9.67~P9.70 Reserved
Group PA: Process Control PID Function
PID control is a general process control method. By performing proportional, integral and differential operations on the difference
between the feedback signal and the target signal.it adjusts the output frequency and constitutes a feedback system to stabilize
the controlled counter around the target value.
It is applied to process control such as flow control, pressure control and temperature control. The following figure shows the
principle block diagram of PID control.
Содержание elmatic ED2000
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