ABB ACQ580 Firmware Manual page 59

1. The pump system meets the triggering conditions defined by parameter
Pump cleaning
uses the target time defined in parameter
speed.
2. Acceleration for cleaning is defined by parameter
3. The pump runs at cleaning speed for the time defined by parameter
Cleaning on time.
4. The pump decelerates to zero-speed. Target time is defined by parameter
Time to zero-speed.
5. The pump is stopped until parameter
6. The pump accelerates the pump speed to positive direction. See parameter
Time to cleaning
7. The pump runs at the positive cleaning speed. See parameter
time.
8. The pump decreases the pump speed back to zero defined by parameter
Time to zero-speed.
9. The drive waits until the parameter
cleaning sequence starts or normal operation starts.
10. The pump starts following speed/frequency reference of the active control
location. During acceleration to speed/frequency, the drive follows pump cleaning
acceleration time
The drive automatically determines the fastest ramp during the pump cleaning and
used to protect the pump. It is possible that the quick ramps are faster than the pump
cleaning ramps.
The cleaning sequence starts based on the selected triggering conditions. The
cleaning sequence follows the diagram on page 54. You can start the sequence in
these conditions:
• on every start and stop
• based on the monitoring pump condition (for example, supervision 1...3;
underload and overload curve, see group
• based on time interval (for example, at every 10 hours)
• manually (for example, DI4 to DI6, defined by parameter
cleaning)
• through fieldbus, using parameter
parameter to a value of 1 (a 2 s pulse) from the fieldbus to start a cleaning cycle
from an overriding controller.
action. At this conditions, normal operation stops and the drive
speed.
83.25 Time to cleaning
83.26 Time to zero-speed
83.25 Time to cleaning
83.28 Cleaning off time
83.28 Cleaning off time
speed.
37 User load curve
83.12 Manually force
Program features 55
83.10
to reach zero
speed.
83.27
83.26
is elapsed.
83.27 Cleaning on
83.26
is elapsed. A new
on 210)
83.12 Manually force
cleaning. Set the
83.25