Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-12-13
Time circulation and Fixed amount control with PID
This mode combines Fixed Time circulation and fixed quantity control 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.
When all the motors are running and water pressure is enough, the fixed time circulation will not be
enabled. Suppose that the motor1 and motor2 run to reach a balance in water pressure and when
time reach the setting at Pr12-02, the motor1 will be running without using mains electricity. Then
when time reaches the setting at Pr12-03, the motor3 will be running by using mains electricity. At
this moment, the operating time of each motor will be reset, once reach the time setting at Pr12-02
again, the motor2 will be running without using mains electricity. Then when time reaches the setting
at Pr12-03, the fourth motor4 will be running by using mains electricity. The time sequence diagram
12-14 is as shown below
Diagram 12-14: Enabling Fixed Time Circulation under Fixed Amount Control Balance
Pr12-02
Relay
Motor2 on mains
RC1
RC2
Motor3 on mains
RC3
RC10
Motor1 on mains
Pr12-03
Pr12-03
Pr12-02
Motor4 on mains
Pr12-06
Freq
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