Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-12-12
Fixed Time circulation and Fixed quantity circulation with PID
This mode combines Fixed Time circulation and fixed quantity circulation with PID. It is to prevent
motors to become rusty if they are not in use for a long period of time. If some motors are not
activated, set the fixed time circulation to run motors one by one to make sure each of them has the
chance to run.
While all the motors are running and water pressure is enough, the time circulation will not be
enabled. Suppose that motor1 and motor2 run to reach a balance in water pressure and when the
time reaches the setting at Pr12-02, the motor1 will be running without using mains electricity and
the motor2 will decelerate to stop.
When the motor2 reaches the frequency setting at Pr12-06 and the time setting at Pr12-05, it will be
separating from the motor drive. Then when time reaches the setting at Pr12-03, the motor2 will run
by using the mains electricity. Then when the time passes the setting at Pr12-03 , the motor3 will be
enabled by the motor drive. The time sequence diagram is as shown below.
Fixed Time Circulation and Fixed Quantity Control with PID
P12-02
Rela
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