152
[1.7 APPLICATION FUNCT.]
(FUn-)
Test at overpressure: (LSP + LFd) > FFd
• If the request is still present, the PID regulator error increases (at overpressure), causing the drive to decelerate. If flow is detected,
the speed will stabilize at its previous level, above the sleep threshold.
.
• If the request is no longer present (zero flow), the PID regulator error increases (at overpressure), causing the drive to decelerate.
The absence of flow maintains the overpressure and the speed falls below the sleep threshold, causing the drive to stop.
.
PI feedback
Frequency
FFd
LSP + LFd
nFd
LSP
t
t
nFd
PID error
LSP + SLE
PID feedback
Frequency
LSP
LSP + LFd
nFd
tLS
FFd
Sleep threshold LSP + SLE
t
t
Содержание ER40-G
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