Time
Wakeup signal
“PID-STP”
PID Control
Sleep Timer
for Process
Control (J16)
The MV rises again
when the pressure
(PV) drops.
RUN command
Feedback (PV)
Piping route
internal pressure
PID output (MV)
Output frequency
Acceleration time
setting
Deceleration time
setting
Starting
frequency
PID Control Sleep Frequency for Process Control (J15)
The pressure rises
when inverter
operation is resumed.
ON
ON
Command (SV)
The pressure starts dropping
by opening the faucet.
PID Control Restart Frequency after
Stopping for Process Control (J17)
• PID Control Restart Feedback Deviation after Stopping for Process Control (J23)
• PID Control Restart Delay Time after Stopping for Process Control (J24)
The inverter restarts when both of the following conditions are satisfied.
1.
The discharge pressure falls, the frequency reference value of the PID controller output rises, the
Restart Frequency (J17) is exceeded, and the PID Control Restart Delay Time after Stopping for
Process Control (J24) elapses.
2. The difference between SV (command value) and PV (feedback value) becomes more than PID
Control Restart Feedback Deviation after Stopping for Process Control (J23), and the PID Control
Restart Delay Time after Stopping for Process Control (J24) elapses.
7 Other Functions
7-136
M1 Series Standard Type User's Manual (I669)
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