TECO-Westinghouse F510 Series, Instruction Manual, Page: 344 / 444

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That is, the parameter 23-01 of one inverter is set to 1 and that of the other inverter should be set to 2
and vice versa.
Bar
Hz
time
time
Hz
time
Master
Slave
Pressure
Feedback Signal
23-02
Operation
Pressure Setting
23-09
Tolerance Range of
Constant Pressure
Output
Frequency
Output
Frequency
A
B C D
60Hz
E
F
23-30
Detection
Time
23-30
Detection
Time
60Hz
23-10
Sleep Frequency
of Constant
Pressure
23-22
Slave Trip
Frequency
Diagram of sleep stop alternative selection action
Note:
A
：
Dual pumps are enabled during this time. Higher operation pressure occurs, Master keeps operation
and Slave output frequency decreases.
B
：
Master operation frequency maintains 60Hz. If water pressure doesn’t decrease to the target constant
pressure and Slave continuously decreases to the set trip frequency (23-22), Slave detection time
(23-30) starts and Slave decelerates to stop.
C
：
If milder water consumption and higher water pressure occur and Slave operation command is in sleep
status, Master output frequency decreases to let the water pressure be in constant status when the
detection time (23-30) is over.
D
：
When Master operation frequency decreases to the sleep frequency of constant pressure (23-10),
Master will decrease to stop, water consumption is continuously mild and water pressure will reduce