ABB ACS880 Series, Firmware Manual

Page: 53 / 764

ESP production mode
The ESP control program can be used to control motor speed using Manual mode
and Automatic process control mode.
￭ Manual mode
In manual mode, the drive controls motor speed with user defined
acceleration/deceleration ramp rates. Typically, it is necessary to accelerate to
the desired production speed range immediately and then switch to a smoother
speed transition style. For this purpose, the ESP control program includes two
sets of acceleration/deceleration ramp time settings.
You can set the speed reference directly through a desired control interface.
• Analog input
• Fieldbus
• Control panel, and
• Drive parameter value.
75.11
75.23
Time
Used ramp
time
75.15
Used ramp
time
Used ramp
time
Used ramp
time
75.21 75.24
75.25
75.22
Speed reference
￭ Automatic process control mode
The pump can be started immediately in Automatic process control mode. However,
due to a relatively slow nature of the artificial lift process, it usually takes some
time before process variable feedback is ready for the closed loop control. To
handle this, you can specify time delay before automatic control is engaged.
ESP program features 53