Response of system enable and fault reset function according to setting of INx and input
Parameter value
INx
5
6
7
8
9
14*
15*
* Function available for firmware V 2.0.0 and later versions
6.6.15.5 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 2.3.3).
The low pressure detecting function is obtained by setting the parameter Ix, for the input to which the enabling signal
has been connected, on one of the values in Table 27.
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 27.
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
10
11
12
13
Input
configuration
Active with high
signal on input
(NO)
Active with low
signal on input
(NO)
Active with high
signal on input
(NO)
Active with low
signal on input
(NO)
Active with high
signal on input
(NO)
Active with high
signal on input
(NO)
Active with low
signal on input
(NC)
Table 26: System enable and fault reset
Input
Input status
configuration
Active with high
signal on input
(NO)
Active with low
signal on input
(NC)
Active with high
signal on input
(NO)
Active with low
signal on input
(NC)
Table 27: Low pressure signal detection (KIWA)
ENGLISH
Input status
Operation
Absent
Inverter Enabled
Present
Inverter Disabled
Absent
Inverter Disabled
Present
Inverter Enabled
Absent
Inverter Enabled
Inverter disabled
Present
+ block reset
Inverter disabled
Absent
+ block reset
Present
Inverter Enabled
Absent
Inverter Enabled
Present
Block reset
Absent
Inverter Enabled
Inverter Disabled no
Present
error message
Absent
Inverter Disabled no
error message
Present
Inverter Enabled
Operation
Absent
System block due to low
Present
pressure on intake;
automatic + manual reset
System block due to low
Absent
pressure on intake;
automatic + manual reset
Present
Absent
System block due to low
Present
pressure on intake.
Manual reset
System block due to low
Absent
pressure on intake.
Manual reset
Present
90
Display
Normal
Normal
Normal
Normal
None
F3
F3
None
None
F3
F3
None
None
None
F3
F3
None
Display
None
F4
F4
None
None
F4
F4
None