DAB ACTIVE DRIVER M/M 1.5 DUAL Instructions Pour L'installation Et La Maintenance page 29

FS: pump's maximum rotation
down to Fn (the rated frequency) as the windings' temperature increases. On the other hand, if necessary, A c tiv e D r iv e r
frequency of operation lower than Fn. I n this case, in any c ondition of regulation, the pump will ne v e r be dri v e n at a frequency higher than F S .
5 . 1 . 3 . 7 FL : minimum frequency setting
FL sets the minimum operating frequency of the pump. FL v a lues may range between 0 H z and 6 0 % of Fn;
for ex a mple, if Fn = 5 0 H z , FL can be chosen between 0 and 3 0 H z .
FL is resets to the default v a lue each time a new Fn v a lue is set.
5 . 1 . 3 . 8 Ft: low flow rate threshold setting
Ft sets a minimum flow rate under which the A c tiv e D r iv e r
regulation range limit according to the flow v a lue, before the pump is turned off.
5 . 1 . 3 . 9 A E : anti - frost/ a nti - block function enabling
T h is function mak e s the pump run and it helps to av o id mechanical block s in case of long inactiv i ty or in case
of low temperature.
W h en the anti - frost function is enabled and the A c tiv e D r iv e r
automatically mak e s the pump run at low speed. K e eping water in mov e ment reduces frost risk s in the
pump. T h ank s to power dissipation, break i ng risk s due to
other hand, if the temperature is in a safe range, a long inactiv i ty may cause mechanical parts block i ng or
residual formation inside the pump; therefore an anti - block cycle is performed ev e ry 2 3 hours
risk s .
W A R N I N G : T h ere could be some pressure increasing in the system, thus the starting frequency must be
close to the rated one for a while, in a single- phase pump, to enable its turn on (see sections 5 . 1 . 3 . 1 4 . 1
5 . 1 . 3 . 1 4 . 2 ).
P l ease check your pump can face the system
anti - frost function.
5 . 1 . 3 . 1 0 C M : R o le ex c hange method in booster sets
W h en two A c tiv e D r iv e r units form a booster set, the two pumps roles (leader or booster, as defined in the
note below) may be ex c hanged according to two different policies.
N o te: I r respectiv e of the A d " v a lue " (primary or secondary A c tiv e D r iv e r
will be called "A c tiv e D r iv e r leader" (it modulates frequency) while the A c tiv e D r iv e r
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the highest frequency will be called "A c tiv e D r iv e r
P o ssible v a lues for the role ex c hange method (C M ) : 0 0 and 0 1
can be set at a ma x i mum
turns off the pump. I n this way there is a
measures a low temperature, with risk of frost, it
ice are reduced in the A c tiv e D r iv e r , too. On the
to av o id these
and
prev a lence . I f not, its better not to enable the
), the A c tiv e D r iv e r that regulates
that work s only at
booster".
I n struction manual V 1 .
- C M = 0 0 : T h e p r i m a r y A c t i v e D r i v e r i s a l w a y s t h e r e g u l a t i o n l e a d e r a n d t h e s e c o n d a r y
w i l l b e a c t i v e a s a b o o s t e r ( i f E b = 2 ) o r a s s p a r e d e v i c e ( i f E b = 1 ) . I f t h e s e c o n d a r y m a c h i n e r e m a i n s
u n u s e d f o r 2 3 h o u r s , i t b e c o m e s t h e l e a d e r u n t i l i t a c c u m u l a t e s o n e m i n u t e o f r e g u l a t i o n ( a w a s h i n
t h e i m p e l l e r i s p e r f o r m e d ) .
I f d u r i n g o p e r a t i o n t h e l e a d e r p u m p i s u n a b l e t o s a t i s f y t h e u s e r r e q u e s t a n d t h e s e c o n d a r y
p u m p i s s e t a s a b o o s t e r ( E b = 2 ) , t h e l a t t e r w i l l w o r k a t m a x i m u m f r e q u e n c y , w h i l e t h e l e a d e r
A c t i v e D r i v e r w i l l c o n t i n u e m o d u l a t i n g r o t a t i o n f r e q u e n c y a c c o r d i n g t o t h e u s e r d e m a n d . T h i s
f u n c t i o n w i l l m a k e t h e s e c o n d d e v i c e w o r k , w h i c h i s n o r m a l l y t u r n e d o f f .
I f t h e u s e r d e m a n d d e c r e a s e s , t h e b o o s t e r m a c h i n e i s t u r n e d o f f , w h i l e t h e l e a d e r m a c h i n e
g o e s o n r e g u l a t i n g .
- C M = 0 1 : T h e p r i m a r y a n d s e c o n d a r y A c t i v e D r i v e r
a r e e x c h a n g e d e a c h t i m e t h e l e a d e r A c t i v e D r i v e r s t a n d s
I f d u r i n g o p e r a t i o n t h e l e a d e r p u m p i s u n a b l e t o s a t i s f y t h e u s
p u m p i s s e t a s a b o o s t e r ( E b = 2 ) , t h e l a t t e r w i l l w o r k a t m a x i m u m f r e q u e n c y , w h i l e t h e l e a d e r
A c t i v e D r i v e r w i l l c o n t i n u e m o d u l a t i n g r o t a t i o n f r e q u e n c y a c c o r d i n g t o t h e u s e r d e m a n d . T h i s
f u n c t i o n w i l l m a k e t h e s e c o n d d e v i c e w o r k , w h i c h i s n o r m a l l y t u r n e d o f f .
I f t h e u s e r d e m a n d d e c r e a s e s , t h e l e a d e r m a c h i n e s t a n d s
b o o s t e r m a c h i n e b e c o m e s l e a d e r ( r e g u l a t i n g a t a v a r i a b l e s p e e d ) .
S e e s e c t i o n 5 . 1 . 2 . 7 t o s e t p a r a m e t er "Eb" booster pump enabling
I n both ex c h a nge mod e s, if one of th e mac h i nes f a ils, th e oth e r one bec o mes lead e r and c a rries on th e
regulation at a c o nstant pressure up to its max i mum av a ilable pow e r.
5 . 1 . 3 . 1 1 S e tup of th e I N 1 , I N 2 and I N 3 aux i liary d i gital inpu
w i th ex p ansion c a rd in)
T h e f u nc t ion giv e n to eac h of th e d i gital inputs I N 1 ; I N 2 ; I N 3 may be ac t iv a ted or mod i f i ed by means of th e
i1 ; i2 ; i3 parameters.
P o ssible v a lues of i1 , i2 and i3 are:
0 → disabled func
1 → the function is active when input is high
2 → the function is active when input is low
Consequently, "F1" will never appear on the display.
"F1" alarm on display and system block (lack
In order to make the system lock and display "F1" error, the input must be
I n struction manual V 1 . 2
2
A c t i v e D r i v e r
g o f
a c t a s l e a d e r o r a s b o o s t e r a l t e r n a t i v e l y . T h e r o l e s
-b y o r a f t e r 2 h o u r s o f c o n t i n u o u s a c t i v i t y .
e r r e q u e s t a n d t h e s e c o n d a r y
-b y o r b e c o m e s b o o s t e r , w h i l e t h e
ts th r ough i1 , i2 and i3 parameters ( o nly
2 5
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