en
– Original instructions
36
P15. Inverter Voltage
This parameter shows the actual estimated input voltage of the frequency converter, expressed
in [Volts].
P16. Motor Speed
This parameter shows the actual motor rotational speed, expressed in [RPM x 10].
P17. Software version
This parameter shows the Control Board software version.
7.5.2 Settings Parameters
P20. Password [0÷999]
The user can enter here the system password, which gives access to all system parameters: this
value is compared with the one stored in P22.
When a correct password is entered, the system remains unlocked for 10 minutes, so that all the
parameters are made accessible.
In case the password entered is not matching the value stored in P22, only the parameters up to
P20 remain accessible.
P21. Jog mode [MIN÷MAX
*
]
When the user accesses to this parameter, it deactivates the internal controller of the drive and
forces the actual Control Mode to ACt for all the time this parameter is in use: motor starts and
the value of P21 becomes the set-point of ACt.
It can be changed just selecting a new value on P21 (in the interval between P27 and P26), not
confirming it (otherwise the user exits from this temporary control).
P22. Set password [1÷999]
Set the system password (default value 66), to which the password entered in P20 PASSWORD
has to correspond.
P23. Lock Function [OFF, ON]
By using this parameter (default value ON), the user can lock or unlock parameter settings in the
main menu; default setting is OFF, so that all parameters are accessible.
In case the user sets P23 = ON, no parameter can be changed without inputting the system
password in P20.
7.5.3 Drive Configuration Parameters
P25. Control mode [ACt, HCS, MSE, MSY]
This parameter sets the Control Mode (default value HCS).
(ACt) Actuator mode
It is the control mode with which a single pump maintains a fixed speed at any flow demand.
ACT will always try to minimize the error between the speed set-point and the actual rotational
speed of the motor.
(HCS) Hydrovar
®
Controller mode for Single pump.
It is the default control mode, provided for open hydraulic circuits, with which a single pump
maintains a constant pressure at any flow demand: Hydrovar
®
algorithm, based on the set of
parameters from P26 to P37 (see par. 7.5.3), is adopted.
For the characteristics of HCS, it is necessary the adoption (on the hydraulic plant) of an
absolute pressure sensor, which gives to the drive the feedback pressure signal (by mean of
External Pressure Sensor input [9,10] par. 5.5, configured by P40): HCS will always try to
minimize the error between the pressure set-point and the feedback pressure signal.
(MSE) Hydrovar
®
Controller mode for Multiple pumps in Serial Cascade.
It is the control mode, provided for open hydraulic circuits, with which a set of pumps,
connected by mean of the Multi-pump Protocol, maintains a constant pressure at any flow
*
It depends on the hydraulic
Summary of Contents for LOWARA e-SVE
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