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10.2 COMBO function
In the “Installer parameters” menu it is possible to enable the COMBO function that allows serial communication between up
to 8 VASCO Solars, each one connected to a pump. The operating principle (switch on/off) of pumps is similar to as stated in
chapter 8.1.
To achieve the COMBO function in a system consisting of several interconnected VASCO Solars, use a pressure sensor
connected to each VASCO Solar. The value of the
set pressure
is communicated to the slaves via the serial port.
To prevent the shutdown of the system due to pressure sensor failure, connecting a 2nd pressure sensor to the VASCO
Solar; make sure that the two pressure sensors are identical.
Remember to perform the offset operation of the sensors in each VASCO Solar (Installer Parameters menu) .
As a further help, you can connect another two DOL pumps to the VASCO Solar Master to cover additional water demand;
they will be operated only when all the COMBO pumps are already in
operation.
RS485 serial connection
VASCO Solar
’s communication
is made through a private protocol using the RS485 port. Each VASCO Solar must be connected
to each other by using a tripolar cable (0,5 mm
2
) wired on S+,S-,G pins on control board.
MASTER: address 00
SLAVE 1: address 01
SLAVE 2: address 02
Master setup
1.
Supply power to the VASCO Solar master.
2.
If not yet completed, perform the initial configuration as described on chapter 6.2
3.
Initial view is shown:
