DAB Esybox Serie Instructions Pour L'installation Et L'entretien page 67

IC: Configuration of the reserve
Configures the device as automatic or reserve. If set on auto (default) the device participates in normal pumping, if configured as reserve,
minimum starting priority is associated with it, this means that the device with this setting will always start last. If a number of active
devices is set that is one lower than the number of devices present and if one element is set as reserve, the effect obtained is that, if
there are no problems, the reserve device does not participate in regular pumping; instead, if one of the devices that participates in
pumping develops a fault (maybe loss of power supply, tripping of a protection, etc.), the reserve device will start.
The state of configuration as a reserve can be seen as follows: on the Multi-pump System page, the top of the icon is coloured; on the
main page, the communication icon representing the address of the device appears with the number on a coloured background. There
may be more than one device configured as reserve in a pumping system. Even though the devices configured as reserve do not
participate in normal pumping, they are nevertheless kept efficient by the anti-stagnation algorithm. The anti-stagnation algorithm
changes the starting priority once every 23 hours and allows the accumulation of at least one continuous minute of supply of flow from
each device. The aim of this algorithm is to avoid the deterioration of the water inside the impeller and to keep the moving parts efficient;
it is useful for all devices and especially for those configured as reserve, which do not work in normal conditions.
ET: Max. switching time
Sets the maximum continuous working time of a device in a set. It is significant only on pump sets with interconnected devices. The time can
be set between 0 min and 9 hours; the factory setting is 2 hours. When the ET of a device has elapsed, the system starting order is reassigned
so as to give minimum priority to the device on which the time has elapsed. The aim of this strategy is to use less the device that has already
worked and to balance the working time between the various machines that make up the set. If the hydraulic load still requires the intervention
of the device, even though it has been put last in starting order, it will start to guarantee pressure boosting of the system.
The starting priority is reassigned in two conditions based on the ET time:
Exchange during pumping: when the pump remains on without interruption until the absolute maximum pumping time has been exceeded.
•
Exchange to standby: when the pump is on standby but 50% of the ET time has been exceeded.
•
If ET has been set at 0 there will be exchange to standby. Whenever a pump in the set stops, a different pump will start first next time it is restarted.
If the parameter ET (Max. switching time) is set at 0, there will be exchange at each restart, irrespective of the pump's actual
work time.
Examples of configuration for multipump systems
Example 1:
A pump set consisting of 2 devices (N=2 automatically detected), 2 of which are set automatically (factory settings: IC = automatic) and
a contemporaneity index of N (factory settings: NC=number of devices). The effect is as follows: the highest-priority device always starts
first, and if the pressure achieved is too low, the second back-up device also starts. The operation of the 2 will take place on a rotating
basis so as to respect the maximum exchange time (ET) of each in order to evenly balance the wear and tear on the devices.
Example 2:
A pump set consisting of 2 devices (N=2 automatically detected) of which 1 is set as automatic (IC = automatic on one device), 1 as
reserve (IC = reserve on the other device) a simultaneity index of 1 (NC=1). The effect is as follows: the device not configured as a
reserve will start and work by itself (even though it does not manage to bear the hydraulic load and the pressure achieved is too low). If
it has a fault, the reserve device steps in.
Example 3:
A pump set consisting of 2 devices (N=2 automatically detected) of which 1 is set as automatic (IC = automatic on one device), 1 as
reserve (IC = reserve on the other device) a simultaneity index of N (factory settings: NC=number of devices).
The effect is as follows: the device that is not configured as reserve always starts first, if the pressure detected is too low the second
device, configured as reserve, also starts. In this way we always try to preserve the use of one device in particular (the one configured
as reserve), but this may be useful in case of necessity when a greater hydraulic load occurs.
AY: Anti Cycling
As described in paragraph 13.3.2 this function is for avoiding frequent switching on and off in the case of leaks in the system. The
function can be enabled in 2 different modes, normal and smart. In normal mode the electronic control blocks the motor after N identical
start/stop cycles. In smart mode it acts on the parameter RP to reduce the negative effects due to leaks. If set on "Disable", the function
does not intervene.
AE: Enabling the anti-block function
This function is for avoiding mechanical blocks in the case of long inactivity; it acts by periodically rotating the pump. When the function
is enabled, every 23 hours the pump performs an unblocking cycle lasting 1 min.
AF: Enabling the anti-freeze function
If this function is enabled the pump is automatically rotated when the temperature reaches values close to freezing point, in order to
avoid breakages of the pump.
ENGLISH
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