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6.6.13.5
Setting low pressure detection (KIWA)
The minimum pressure switch that detects low pressure can be connected to any input (for electrical connections, refer to paragraph
2.2.4.2) The low pressure detection function is obtained by setting the parameter INx, associated with the input where the enable
signal is connected, to one of the values in Table 26.
Activation of the low pressure detection function generate a system block after time T1 (see T1: Tempo di spegnimento dopo il segnale
bassa pressione par. 6.6.2). This function is envisaged to connect the input to a signal from a pressure switch that indicates excessively
low pressure on pump intake.
When this function is enabled, the symbol F4 is shown on the STATUS line of the main page.
When in the F4 error condition, the input must be deactivated for at least 2 seconds before the system unblocks. The function behaviour
is summarised in Table 26.
When several low pressure detection functions are configured at the same time on different inputs, the system indicates F4 when at
least one function is activated and clears the alarm when none are activated.
Response of system enable and fault reset function according to setting of INx and input
Parameter
value
INx
Active with high signal
10
11
Active with high signal
12
13
6.6.14
Setup of outputs OUT1, OUT2
This section illustrates the functions and possible configurations of the outputs OUT1 and OUT2 via parameters O1 and O2.
For electrical connections, see section 2.2.4.
The default settings are those in Table 27.
6.6.14.1
O1: Output 1 function setting
Output 1 notifies of an active alarm (i.e. that there is a system block). The output enables use of a normally closed or normally open
voltage-free contact.
Parameter O1 is associated with the values and functions specified in Table 28.
Input
configuration
on input (NO)
Active with low signal
on input (NO)
on input (NO)
Active with low signal
on input (NO)
Table 28: Low pressure signal detection (KIWA)
Output
OUT 1
OUT 2
Table 29: Default output settings
ENGLISH
Input status
Absent
System block due to low pressure
Present
on intake; automatic + manual
System block due to low pressure
Absent
on intake; automatic + manual
Present
Absent
System block due to low pressure
Present
System block due to low pressure
Absent
Present
Default output settings
Value
2 (fault NO closes)
2 (Pump running NO closes)
116
Operation
Normal
reset
reset
Normal
Normal
on intake.
Manual reset
on intake.
Manual reset
Normal
Display
None
F4
F4
None
None
F4
F4
None
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