Instructions of Connection and Operation for Multiple Pump Connection
1. We can connect maximum 6 sets of variable frequency water pumps. Connection for 6 sets of VFD water pumps:
Connect the 485 socket terminal of the display board with the 2P cable. The 485+ and 485- of the first inverter terminal are connected respectively to the 485+ and 485- of the second inverter terminal, and then connect the second inverter to the third inverter, the third inverter to the fourth inverter, the fourth inverter to the fifth inverter, the fifth inverter to the sixth inverter in the same way. Please respect this connection order and connect them correctly, the positive wire is connected to the positive wire, the negative wire is connected to the negative wire.
2. When all the cables are well connected and all the variable frequency water pumps are powered on, set those 6 inverters to the stop state by pressing the "stop" button, and then operate each inverter according to the following steps 3 and 4 to set the machine number.
3. Press the "UP" and "DOWN" button of the first inverter simultaneously for 3 seconds to enter the subdirectory, then press the "UP" button to P022, then press the “RUN” button to confirm, press the"UP" button again to set the parameter to 1. This inverter is the No. 1 machine (this VFD water pump is the host, and the other 5 are the slaves). (P022 is set for the position number)
4. Set the other 5 inverters according to step 3, set the second inverter to 2 (the second is the No.2 machine), the third to 3 (No.3 machine ), the fourth to 4 (No.4 machine), the fifth to 5 (No.5 machine), and the sixth to 6 (No.6 machine).
5. Enter the subdirectory of the first inverter again and adjust it to P023, set the cycle time according to your requirements, the adjustable setting range is 1-72 hours. For example, if it is set to 24 hours, set the parameter to 24. (P023 is the cycle time setting. Please note that if you want P023 works ,the parameter of P024 should be one less than the total quantity of inverters in the multipump connection. For example, if you connect 3 inverters, P024 must be 2; If you connect 2 inverters, P024 must be 1).
6. Enter the subdirectory of the first inverter again and adjust it to P024, set the parameter to 6 (indicating 6 inverters to be connected), set to 2 if you want to connect only 2 inverters, and so on (this is the case when you don't need P023 cycle time fonction; if you need cycle time fonction, the parameter should be one less as indicated in step5). (P024 is the number of machines to be connected).
7. All the above settings done, disconnect all the inverters from the power supply. Then connect all the inverters to power after 2 minutes .
8. When you see the "GROUP" indicator light of one of the inverters is always on (this inverter is the host, the other 5 are the slaves, and the "GROUP" indicator light of the slave is flashing). If all "GROUP" indicator lights on the panel of those inverter are on, the connection signal is normal.
9. Please note that while operating the panel, only the buttons of the host panel work, you can't operate other slaves’ panel. Press the "RUN" button of the host inverter and pumps begin to run, then the debugging is completed.
