40
D : When the water usage become less, through Water Usage Detection, and the output
frequency will decrease again, when the water usage reduce to only 1 drive can
afford (means still can keep constant pressure), then the output frequency of Slave
will decrease again and get into sleeping mode.(More detail about Slave sleeping
conditions please refer 19-6 and 19-7). Now, only the Master is operating.
19-3 Auto Shift Time
Mater and Slave unit will exchange the status after the setting time of 19-3, thereby
Master will operate as Slave and Slave operate as Master. The S1 can be a switch to
start or stop operation.
19-4 Launch Delay Time (Slave Unit)
When the feedback signal is lower than 18-8, Master will start immediately. If the
feedback signal is still lower than 18-8 and over 19-4, the Slave will operate.
1.When using dual pump 19-0≠0, the two drives parameter 19-0 cannot be set as 1 or
2 for both, and modifying 19-5=200 and 17-4 is needed which helps to make sure the
feedback signal of the two drive is the same
(25):19-1 Max. Pressure of Pressure Transmitter 0.10 – 25.50 Bar
According to the specification of pressure transmitter to set pump system pressure
base.
(26):19-5 AI2 (S6)Gain(%) adjustment 0 – 200 %
The dual pump operation AI2 (S6) Gain is 200% and 17- 4 Feedback Signal Offset
should be the same for both Master and Slave drives.
(27):19-6 Start Frequency for Slave Pump Running 0 – 100 % (100% = 16-0)
19-7 Start Frequency for Slave Pump Stopping 0 – 100 % (100% = 16-0)
19-6 = 0% : Disable.
19-7 = 0% : Disable.
When dual pump is operation and Master is running, as the pressure is lower than
(18-0 – 18-8), the Slave will restart by follow condition:
1.19-6 = 0%: Disable restart frequency condition
After the setting time of 19-4, Master request Slave to start.
2.19-6 = 1 ~ 100%: Enable restart frequency condition
When the output frequency of Master is over than 19-6(%) × 16-0, and after the
setting time of 19-4, then Master request Slave to start.
When Master and Slave are running, the Slave will stop by follow condition:
1.19-7 = 0%: Disable stop frequency condition
When output frequency of Slave is less then 16-5 Sleep Frequency, and persist
time is bigger than 18-7 Sleep delay time, then Slave will get into sleep mode.
2.19-7 = 1 ~ 100%: Enable stop frequency condition
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