You can set acceleration and deceleration ramps for the Auto-cleaning function with
parameters P3.21.1.8 and P3.21.1.9.
Zero Frequency
Output
Frequency
Cleaning
Forward Frequency
Cleaning
Reverse Frequency
Cleaning
Forward
Time
Cleaning Activation
Cleaning
Reverse
Time
Cleaning Function
Cycle1
Cycle2
Cleaning Cycles
Fig. 91: The Auto-cleaning function
10.22.2 JOCKEY PUMP
P3.21.2.1 JOCKEY FUNCTION (ID 1674)
Use this parameter to control the Jockey pump function.
A Jockey pump is a smaller pump that keeps the pressure in the pipeline, when the main
pump is in the sleep mode. This can occur, for example, in the night.
The Jockey pump function controls a jockey pump with a digital output signal. You can use a
jockey pump if a PID controller is used to control the main pump. The function has 3
operation modes.
Selection
number
Selection name
Description
0
Not used
1
PID sleep
The jockey pump starts when the PID Sleep of the main
pump activates. The jockey pump stops when the main pump
wakes up from the sleep mode.
2
PID sleep (level)
The jockey pump starts when the PID Sleep activates, and
the PID feedback signal is less than the level set by parame-
ter P3.21.2.2.
The jockey pump stops when the PID feedback signal is more
than the level set in parameter P3.21.2.3 or the main pump
wakes up from the sleep mode.
PARAMETER DESCRIPTIONS
VACON · 327
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