DAB MCE-55/P, Instruction For Installation And Maintenance

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When in the F1 error condition, the input must be deactivated for at least 30 seconds before the system
unblocks. The function behaviour is summarised in Table 21.
When several float functions are configured at the same time on different inputs, the system indicates F1
when at least one function is activated and clears the alarm when none are activated.
Behaviour of external float function
Signal on terminal
Input
configuration
Operation Item on display
Input not energised 1 (NO) Normal None
Input energised 1 (NC)
System block due to water failure
from external float
F1
Input not energised 2 (NO)
System block due to water failure
from external float
F1
Input energised 2 (NC) Normal None
Table 21: External float function
6.6.13.3 Setting the auxiliary pressure input function
The auxiliary pressure function modifies the system setpoint from pressure SP (see section 6.3) to pressure
Pi (see Impostazione funzione ingresso pressione ausiliaria section 6.6.13.3) where "i” represents the input
used. In this way, as well as SP, there are further four pressure values available (P1, P2, P3, P4).
When this function is enabled, the symbol Pi is shown on the STATUS line of the main page.
The input must be active for at least 1 second for the system to operate with the auxiliary setpoint.
When operating with the auxiliary setpoint, the input must not be active for at least 1 second to return to
operation with setpoint SP. The function behaviour is summarised in Table 22.
If several auxiliary pressure values are configured at the same time on different inputs, the system indicates
Pi when at least one function is activated. For simultaneous activations, the pressure reached will be the
lowest from those with the input active. The alarm is cleared when no input is activated.
Behaviour of auxiliary pressure function
Signal on terminal
Input
configuration
Operation Item on display
Input not energised 3 (NO) Auxiliary setpoint not active None
Input energised 3 (NC) Auxiliary setpoint active Pi
Input not energised 4 (NO) Auxiliary setpoint active Pi
Input energised 4 (NC) Auxiliary setpoint not active None
Table 22: Auxiliary setpoints
6.6.13.4 Setting the system enable and fault reset
When this function is active, the system is totally disabled, and F3 is displayed n the STATUS line of the
main page.
When several system disable functions are configured at the same time on different inputs, the system
indicates F3 when at least one function is activated and clears the alarm when none are activated.
The input must be active for at least 1 second for the system to implement the disable function.
When the system is disabled, the input must not be active for at least 1 second for the function to be
deactivated (system re-enable). The function behaviour is summarised in Table 23.
If several disable functions are configured at the same time on different inputs, the system indicates F3 when
at least one function is activated. The alarm is cleared when no input is activated.