Beijer Electronics BFI-H2 V1.12 - Manual (Page 35)

User Guide Revision 1.12
35
The Pump Cleaning cycle is defined by setting two segment speeds, a ramp time (used for acceleration and deceleration), and a segment time
in the following parameters:
Parameter Number Description
P2-05 Clean Speed 1
P2-06 Clean Speed 2
P8-04 Pump Cleaning Function Time Interval
P8-05 Pump Cleaning Function Ramp Time
If either of the two Pump Cleaning Speeds are set to zero then that segment of the cleaning cycle is disabled. Pump cleaning speeds can be set
with positive or negative values to allow forward or reverse motion to be performed and two stage or bidirectional profiles to be created. The
Acceleration ramp for the pump clean function is determined by setting P8-05. The deceleration ramp rate is determined by the standard
deceleration ramp parameter P1-04.
Caution: Always ensure that the pump is suitable for reverse operation before applying a negative speed reference to either Clean
Speed 1 or Clean Speed 2 (P2-05 & P2-06).
An example of the Pump cleaning profile is shown below.
When the Pump Cleaning function is completed the drive returns immediately to the current set-point speed. Return to normal operating
speed is done using the standard ramp settings (P1-03 / P1-04). Segment execution time (set in P8-04) encompasses the time taken to
accelerate the motor to the cleaning speed but does not include the ramped return to normal operating speed.
Quick Setup Overview:

If the Pump Cleaning function is to be triggered by an over-torque condition then section 7.4, Load Profile Monitoring Function
must be commissioned prior to set-up of the Pump Clean function.

Set Basic parameters P1-01 to P1-10. Energy Optimiser P1-06 must remain disabled.

Set Parameter P1-14 = 101 to allow access to advanced parameters in menu 8

Set the segment speed for each cleaning segment in parameters P2-05 and P2-06

Enable the Pump Clean function by setting P8-03. Setting of P8-03 is not necessary if the Pump Clean function is activated only by a
digital input.
o 0: Disabled
o 1: Activated on enable (Pump start up)
o 2: Activated on enable (Pump start up), or operation in Over-torque region
o 3: Activated by operation in Over-torque region

Set the segment time for the cleaning cycle in parameter P8-04. This is the time to run each cleaning segment, including acceleration.
 Set a ramp time for the Pump Clean function is P8-05. This is the ramp rate to use in accelerating to Pump Clean Speed 1 and Pump
Clean Speed 2.
7.6. Pump Stir Function
The Pump Stir function is used to trigger the pump to run following a period of inactivity. When the motor has remained inoperable for a pre-
defined time a user defined motion profile is carried out on the pump. The function is active when the drive is in PID mode and the timer
activated by the drive entering into ‘standby’. The function is used to prevent pump blockage or pump degradation caused by sustained
periods of pump inactivity. The function might also be used for fan applications to prevent degradation of bearing lubricants.