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ENGLISH
119
7.
PROTECTION SYSTEMS
The inverter is equipped with protection systems designed to preserve the pump, motor, power line and the inverter itself. When one
or more protections trip, the one with the highest priority is shown on display. Depending on the type of error, the electric pump may
shut down, but when normal conditions are restored, the error state may clear automatically, immediately or after a set time interval
following automatic reset.
In the case of a block due to water supply failure (BL), block due to pump motor current overload (OC), block due to final output stage
current overload (OF), block due to direct short circuit between the phases on the output terminal (SC), the user can attempt to manually
reset the error condition by pressing and releasing b and - simultaneously. If the error condition persists, the cause of the fault
must be located and eliminated.
Alarm in fault log
Display message
Description
PD
Irregular shutdown
FA
Problems with cooling system
Table 31: Alarms
Block conditions
Display message
Description
BL
Block due to water failure
BPx
Block due to reading error of the pressure sensor named
LP
Block due to low power supply voltage
HP
Block due to high internal power supply voltage
OT
Block due to overheating of final power stages
OB
Block due to overheating of printed circuit
OC
Block due to current overload on electric pump motor
OF
Block due to current overload on final stages of output
SC
Block due to direct short circuit between the phases on the output terminal
EC
Block due to lack of rated current setting (RC)
Ei
Block due to “i” internal error
Vi
Block due to “I” internal voltage outside tolerance
Table 32: Block information
7.1
Description of blocks
7.1.1
“BL” Block due to water failure
In flow conditions below minimum value, with pressure lower than the set regulation value, a water failure signal is emitted and the
system shuts down the pump. The delay interval without pressure and flow can be set in the parameter TB of the TECHNICAL
ASSISTANCE menu.
If the user inadvertently enters a pressure setpoint higher than the pressure that the electric pump can supply on closure, the system
indicates “block due to water failure” (BL) even if this is not precisely the problem. In this case, lower the regulation pressure to a
reasonable value, which does not normally exceed 2/3 of the head of the electrical pump installed.
The parameters SO: Dry running factor 6.5.14 and Minimum pressure pump stop due to water failure 6.5.15 enable the user to enter
the dry running protection activation thresholds.
If the parameters: SP, RC, SO and MP are not set correctly, the water failure protection will not function correctly.
7.1.2
“BPx” Block due to fault on pressure sensor
If the inverter detects a fault on the pressure sensor, the pump remains blocked and the error signal “BPx” is displayed. This status
starts as soon as the problem is detected and is reset automatically when the correct conditions are restored.
Содержание AD 1.0 AC
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Страница 74: ...ENGLISH 72 Figure 2 Fixture and minimum clearance for air circulation...
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Страница 820: ...818 3 2 1 2 3 2 1 10 2 2 5 5 5 2 2 12...
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Страница 942: ...940 17 14 15 3 4 PW 6 6 16 GO SB FAULT...
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