Speed reference
75.52
75.15
75.46
Time
Time
Regular current
0
0
Acceleration
assistance
Kick-start routine
75.51
75.56
Motor current
75.42
Settings and diagnostics
Parameter group 75 ESP reference setup (page 525).
￭
Starting speed
Starting speed defines the frequency at which the drive begins modulating upon
receiving start-command. In the ESP systems, where AC transformer is used to
step-up voltage from low voltage drive to medium voltage motor. This function
assists efficient power transmission and prevents undesirable transformer
saturation at start.
￭
Current pulse-start
Current pulse-start function enables when regular starting routines are not enough
to accelerate the motor. The most common reason can be pump waxing or
sedimentation. The function produces a series of thrusts to the pump impeller by
sending short high-current impulses.
You can adjust speed, magnitude and frequency of thrusts applied. After the
Current pulse-start routine is competed, the control is given to Kick-start function
(if enabled) and then proceed to production speed with additional help of the
acceleration assistance (if enabled).
50 ESP program features
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