DAB Esybox Serie Instructions Pour L'installation Et L'entretien page 63

Disabling the functions associated with the input
Setting 0 as the configuration value of an input, each function associated with the input will be disabled irrespective of the signal present on the input
terminals.
Setting external float function
The external float can be connected to any input, for the electrical connections refer to the control unit manual. The float function is obtained, setting
one of the values in Table 17 on the parameter Ix, for the input to which the float has been connected.
The activation of the external float function generates the block of the system. The function is conceived for connecting the input to a signal arriving
from a float which indicates lack of water. When this function is active the float switch symbol is shown on the STATUS line of the main page. For the
system to block and give the error signal F1, the input must be activated for at least 1 sec. When it is in error condition F1, the input must have been
deactivated for at least 30 sec before the system can be unblocked. The behaviour of the function is summed up in Table 16. When several float
functions are configured at the same time on different inputs, the system will indicate F1 when at least one function is activated and will remove the
alarm when none is activated.
Behaviour of the external float function depending on INx and on the input
Value of
Parameter Input configuration
Ix
Active with high signal on
1
input (NO)
2 Active with low signal on
input (NC)
Setting auxiliary setpoint input function
The signal that enables an auxiliary setpoint can be supplied on any of the 4 inputs (for the electrical connections, refer to the control unit manual). The
auxiliary setpoint is obtained by setting the Ix parameter relating to the input on which the connection has been made, in accordance with Table 18.
Example:. to use Paux 2, set I2 on 3 or 4 and use input 2 on the control unit; in this condition, if input 2 is energized, pressure Paux 2 will be produced
and the display will show P2.
The auxiliary setpoint function modifies the system setpoint from pressure SP (see par. 9.3 – Setpoint Menu ) to pressure Pi, where is represents the
input used. In this way, as well as SP, four other pressures are available, P1, P2, P3, P4.
When this function is active the symbol Pi is shown on the main page.
For the system to work with the auxiliary setpoint, the input must be active for at least 1 sec.
When you are working with the auxiliary setpoint, to return to working with setpoint SP, the input must not be active for at least 1 sec. The behaviour of
the function is summed up in Table 17. When several auxiliary setpoint functions are configured at the same time on different inputs, the system will
show Pi when at least one function is activated. For simultaneous activations, the pressure achieved will be the lowest of those with the active input.
The alarm is removed when no input is activated.
Behaviour of the auxiliary setpoint function depending on Ix and on the input
Value of
Input
Parameter
configuration
Ix
Active with high
signal on input
3 (NO)
Active with low
4 signal on input
(NC)
Input status Operation
Absent
System block for water
Present
lack by external float
System block for water
Absent
lack by external float
Present
Table 16: External float function
Input status
Assente i-th auxiliary setpoint not active
Presente i-th auxiliary setpoint active
Assente i-th auxiliary setpoint active
Presente i-th auxiliary setpoint not active
ENGLISH
Shown on
display
Normal None
F1
F1
Normal None
Shown on
Operation
61
display
Nessuna
Px
Px
Nessuna
Table 17: Auxiliary setpoint