70
6
DETAILED PARAMETER DESCRIPTION
1. Set P45 (Pump control) at "On".
2. Set P14 (undercurrent) or set P15 (Undercurrent Time) at
"OFF" until the set has finished. After then, program it again.
3. Check the correct direction of rotation of the motor, as
indicated ON the pump frame.
4. Set P01 (initial voltage - % U
N
) to the level so the motor
starts to run without vibration.
5. Set P02 (Acceleration Time [s]) to the starting time required
by the load. With the manometer in the pipeline, check the
pressure increase that must be continuous until the max.
required level is reached without overshoots.
If overshoots occur, increase the acceleration time to reduce
this pressure overshoots at maximum.
6. P03 (Voltage Fall Step - %U
N
) use this function to cause an
immediate pressure drop or a more linear pressure drop
during the motor deceleration.
7. P04 (deceleration time) during the motor deceleration
check with manometer the pressure drop that must be
continuous until the minimum level is reached without the
presence of hydraulic ram when the non-return valve is
closed. If this occurs, increase the deceleration time until the
oscillations are reduced at maximum.
P02
= 15 s (acceleration time)
P03
= 80% U
N
(voltage step during deceleration)
P04
= 15 s (deceleration time)
P11
= OFF (Current Limit)
P14
= 70% I
N
(switch undercurrent)
P15
= 5s ( Undercurrent Time)
P43
= OFF (By-pass relay)
The other parameters continue with their previous values.
NOTE!
Although the values that are set automatically meet most
applications, they can be improved to meet the requirements
of your application.
Please find below a procedure to improve the performance
of the control of pumps.
End setting of the pump control function:
NOTE!
This setting must be used only to improve the performance
of the pump control and when the pump is already installed
and able to operate at full-load.
