VARISCO PSDrive 11, Инструкция по установке, эксплуатации и обслуживанию

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Alert Description Possible solutions
W02 ACTIVE
DIG.IN. 2 Digital input 2 has been activated. • Check the configuration and connections to digital input 2.
W03 ACTIVE
DIG.IN. 3 Digital input 3 has been activated. • Check the configuration and connections to digital input 3.
W04 ACTIVE
DIG.IN. 4 Digital input 4 has been activated. • Check the configuration and connections to digital input 4.
W20 TEMP. DERATE The inverter is limiting the maxi-
mum motor frequency to keep the
inverter temperature below the
maximum limit. • Check possible solutions for the alarm A03 OVER TEMP.
INV..
W21 OVERLOAD
15V Power supply overload 15V. • Check the absorption of the loads and any short circuits con-
nected to the 15V power supply
W22 EEPROM
COM. Lack of communication with EE-
PROM • Contact technical support.
W23 EEPROM
FAULT Failure of EEPROM • Contact technical support
W25 ALARM SLAVE
X In control mode COMBO, the mas-
ter has detected an alarm in the X
slave. • Check the status of the XX slave unit indicated by the mas-
ter.
W26 NO WATER The power factor (cosphi) of the
motor read by the device is stably
below the value set in the parame-
ter Dry run cosphi. • Check that the pump is properly primed.
• Check that the direction of rotation of the pump is correct.
• Check that the parameter Dry run cosphi is set correctly.
W27 BLOCK START/
STOP The START/STOP buttons have
been locked. • Press the START or STOP button for at least 5 seconds to
remove the lock.
NOTE
With threephase asynchronous motors, the correct value to set for the parameter Dry run
cosphi depends on:
• Type of motor (construction and winding data). Generally, three-phase surface motors
have a higher rated cosphi than submersible motors of the same power rating.
• Pump type (hydraulic performance and power consumption curve).
• Power supply characteristics (voltage and frequency).
In general, the parameter Dry run cosphi may be set to 60% of the nominal cosphi shown
on the pump's plate data.
The parameter Dry run cosphi must also be determined empirically at the end of the in-
stallation. In the presence of centrifugal pumps with three-phase asynchronous motor, a
simple method consists in starting the pump at the rated frequency and, paying attention
to the sustainability of the system, completely closing the delivery and then reading the
measured cosphi value on the display (or on the App). The parameter Dry run cosphi
must therefore be set to 10% less than the cosphi value read in the closed flow condition.
PSDrive
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