devices, a message appears on the display of each device asking whether you want to propagate the configuration of that particular device to the whole

system. If you accept, the sensitive parameters of the device on which you answered the question will be distributed to all the devices in the chain.

If there are configurations that are not compatible with the system, these devices are not allowed to propagate their configuration.

During normal operation, changing a sensitive parameter of a device results in the automatic alignment of the parameter on all the other devices without

asking for confirmation.

NOTE: The automatic alignment of the sensitive parameters has no effect on all the other types of parameters.

In the particular case of inserting a device with factory settings in the chain (a device replacing an existing one or a device on which the factory

configuration has been restored), if the present configurations with the exception of the factory configurations are compatible, the device with

factory configuration automatically assumes the sensitive parameters of the chain.

Parameters with optional alignment

These are parameters for which it is tolerated that they may not be

aligned among the various devices. At each change of these

parameters, when you come to press SET or MODE, you are asked

if you want to propagate the change to the entire communication

chain. In this way, if all elements of the chain are the same, it avoids

setting the same data on all the devices

11.4.6 First start of the multipump system

Make the electric and hydraulic connections of the whole system as described in par 4.1.1, 4.2.1 and par 5.1.

Switch on the devices and create the associations as described in paragraph 9.5 – AS: Association of devices.

11.4.7 Multipump adjustment

When a multipump system is switched on, the addresses are automatically assigned and an algorithm selects one device as the adjustment

leader. The leader decides the speed and starting order of each device in the chain.

The adjustment mode is sequential (the devices start one at a time). When starting conditions occur, the first device starts, when it has reached

maximum speed the next one starts, and then the others in sequence. The starting order is not necessarily in ascending order according to the

machine address, but it depends on the working hours done see 9.6. - ET: Max. switching time.

11.4.8 Assigning the starting order

Each time the system is switched on a starting order is associated with each device. Depending on this, the sequential starts of the devices are

decided. The starting order is modified during use as necessary by the following two algorithms:

– Reaching the Max. switching time.

– Reaching the maximum inactivity time.

11.4.9 Max. switching time

Depending on the parameter ET (Max. switching time), each device has a working time counter, and depending on this the starting order is

updated with the following algorithm:

– if at least half of the ET value has been exceeded, the priority is exchanged the first time the inverter switches off (exchange to standby);

– if the ET value is reached without ever stopping, the inverter is switched off unconditionally and is taken to minimum restarting priority (exchange

during running).

If the parameter ET (Max. switching time) is set at 0, there is an exchange at each restart.

See 9.6 - ET: Max. switching time.

11.4.10 Reaching the maximum inactivity time

The multipump system has an anti-stagnation algorithm, the aim of which is to keep the pumps in perfect working order and to maintain the

integrity of the pumped fluid. It works by allowing a rotation in the pumping order so as to make all the pumps supply at least one minute of flow

every 23 hours. This happens whatever the device configuration (enabled or reserve). The exchange of priority requires that the device that has

been stopped for 23 hours be given maximum priority in the starting order. This means that as soon as it is necessary to supply flow, it will be

the first to start. The devices configured as reserve have precedence over the others. The algorithm ends its action when the device has

supplied at least one minute of flow. When the intervention of the anti-stagnation algorithm is over, if the device is configured as reserve, it is

returned to minimum priority to preserve it from wear.

ENGLISH