Nastec SUND 50, Installation And Use Manual

Page: 17 / 24

17
Parameter Default Description
M
PP
T
Co
n
stan
t
val
u
e
Fi
x sp
e
e
d
Co
n
st.v
al
u
e
2
set
Fi
x sp
e
e
d
2
val
.
Exte
rn
al
sp
e
e
d
XX
MPPT frequency gap.

Kp and Ki parameters allow the
dynamic control of system; set values
are usually enough to get a valid
dynamic control.
  
OFF
Enabling or disabling COMBO
operation as described in COMBO
chapter.
 
00
Inverter address:

00 master

01 to 07 slaves
 
OFF
Function to allow alternating
between the inverters connected in
COMBO in order to allow equal use of
each pump in the group; master will
reorganize the starting priority of the
pumps by checking the life of each of
them.
 
0
Maximum difference in terms of
hours between the pumps in the
group.
0 stays for 5 minutes.
 
OFF
With this parameter it is possible to
activate the synchronous operation
(same speed) of the pumps in
COMBO.
It is however necessary to
appropriately lower the parameter
"f. min. control".
 
0
Delay time with which the slaves start
after the variable speed pump has
reached the maximum frequency and
the pressure value has fallen below
set value – delta control
 
D
irec
t
Direct: increasing motor speed also
misured value increases
Reverse: increasing motor speed,
misured value decreases.
 
0
Pump periodic autorun after XX hours
of inactivity. Value 0 makes function
disabled.
Warning, review the advice in chapter
1.
    
MPPT: freq. gap
df = XX.X [Hz]
Kp
Ki
COMBO
ON/OFF
Address
XX
Alternance
ON/OFF
Alternance period
XX [h]
COMBO synchrony
ON/OFF
Start delay AUX
t = XX [s]
PI control
Direct/Reverse
Periodic autorun
t = XX [h]