HV100 Series High Performance Current Vector Inverter
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3. Differences between DI1 and DI6
DI1 and DI6 cannot be switched on at the same time. DI1 is manually controlled to start and stop, and only one pump
can be started at a time. The frequency is given by AI1, and PID adjustment is not performed. DI6 controls the start and
stop under the multi-pump water supply mode, and carries out PID adjustment.
4. Manually control the working process of starting and stopping the pump
After DI1 and COM are short-circuited, the order of pump starting is Start first, start trumpet together. For example,
only after DI5 is connected, only the No.3 pump is turned on; If DI4 and DI5 are connected at the same time, only the No.2
pump will be turned on; If DI3, DI4 and DI5 are connected at the same time, only the No.1 pump will be started.
5. Working process of multi-pump water supply mode
After DI6 and COM are short-circuited, the order of pump startup is Start first, start smaller power ones together, and
carry out PID control.
(1)
When
00.01=2 (one change
and two work is valid), if all three pumps are put into operation, after the system is
powered on, first turn on the No.1 pump and start the No.1 variable frequency pump to work. When the working frequency
of No.1 variable frequency pump reaches 50Hz, the pump adding time will be delayed (15.05). If the measured pressure
does not reach the system set pressure, the No.2 power frequency pump will be switched on. When the working frequency
of No.1 variable frequency pump reaches 50Hz again, the No.3 power frequency pump will be switched on if the measured
pressure still does not reach the system set pressure. If the measured pressure is greater than or equal to the set pressure
of the system, the working frequency of No.1 variable frequency pump drops to the lower limit frequency of pump reduction
(15.02 ), and the No.3 power frequency pump will be disconnected after the pump reduction delay (15.06 ). If the measured
pressure is still greater than or equal to the set pressure of the system, and the working frequency of No.1 variable
frequency pump is less than or equal to the lower limit frequency of pump reduction (15.02
(2) When 00.01=3 (three pump circulation is valid), if all three pumps are put into operation, after the system is
powered on, connect pump No. 1 first and start the frequency conversion work of pump No. 1. When the No.1 pump works
at 50Hz, after adding pump delay (15.05), if the measured pressure does not reach the set pressure of the system,
disconnect the No.1 pump, and turn on the No.2 pump and the No.1 power frequency pump. At this time, the No.1 pump
changes from frequency conversion state to power frequency state, and the No.2 pump works in frequency conversion
state. When the No.2 pump works at 50Hz, after adding pump delay (15.05), if the measured pressure still fails to reach the
set pressure of the system, disconnect the No.2 pump, and turn on the No.3 pump and the No.2 power frequency pump. At
this time, the No.2 pump is switched from the variable frequency pump to the power frequency state, while the No.3 pump
is still in the power frequency state. When the working frequency of No.3 pump drops to the lower limit frequency of pump
reduction (15.02 ), after pump reduction delay (15.06 ), if the measured pressure is greater than or equal to the set
pressure of the system, disconnect the No.1 power frequency pump; When the working frequency of No.3 pump is less
than or equal to the lower limit frequency of pump reduction (15.02 ), after the pump reduction delay (15.06 ), if the
measured pressure is still greater than or equal to the set pressure of the system, disconnect the No.2 power frequency
pump; Finally, only the No.3 variable frequency pump works.
Note: All three pumps shall be put into operation if one with three are required. If you need one with two,
choose two pumps at will; If you need to one with one, choose one pump to put it into operation at will; They are
all in accordance with the rules of putting in first, starting first, and putting in the smaller power ones first.
6. Terminal access disconnection delay
The signal is out of sync due to the delay of the contactor terminal connection and disconnection, which requires the
terminal input disconnection delay (15.00 ) to adjust.
7. Description of DI2 terminal
DI2 is the operation permission terminal, which is connected to the normally closed point of external fault relay, and is
generally controlled by external water shortage or high voltage signal. If there is no external fault detection, it needs to be
short-circuited with COM.
III. The application of STOP/RST key
1.
14.01 The factory default is 3, that is, the STOP/RST key is valid when the terminal controls the operation mode. If the
keyboard is used to stop the machine, it is necessary to re-access the DI2 and DI6 terminals or re-power them on before
they can work normally.
2.
When 14.01=0, the STOP/RST key is invalid during terminal control, and only resets the inverter fault. In general,
14.01 is set to 0 to prevent misoperation of keyboard shutdown, and it is necessary to re-access DI2 and DI6 terminals or
re-power them on before they can work normally.
III.
Working process in case of failure during water supply
1.
In case of external failure of the variable frequency pump, stop the failed pump first, and then switch the No.1 power
frequency pump to the variable frequency pump. For example, No.1, No.2 and No.3 pumps are all turned on, while No.1
and No.3 are all power frequencies. In case of inverter failure, stop No.2 pump first, then switch No.3 power frequency to
the variable frequency pump, and continue power frequency on No.1; If the external fault of No.3 pump is relieved, it can be
put into use normally.
2.
In case of internal failure of variable frequency pump, all pumps are stopped. After the failure of inverter is reset by
keyboard, the normal working state is restored.
IV. Function setting