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BBV28581 05/2010 85
Configuration Mode - Complete menu (FULL)
When the frequency is lower than the stopping threshold (FOF), a time delay is launched (tOF) to avoid the effects of transient flow
fluctuations. If after this time delay, the frequency remains lower than the stopping threshold, the auxiliary pump is stopped. When the stop
command is sent, the variable pump will go from its current speed reference to the auxiliary pump starting frequency (FOn) following a ramp
(rOF) that equals the auxiliary pump stopping time. Parameter rOF is used to minimize the booster effect on stopping the auxiliary pump.
HSP
FOn
FOF
tOF
LSP
rOF
t
Frequency of the
variable pump
Auxiliary pump
stopping