Engli
s
h
56
WILO SE 05/
2
010
6.3
Dual pump function
NOTE
The ch
a
r
a
cteri
s
tic
s
de
s
cribed below
a
re only
a
v
a
il
a
ble when the inter-
n
a
l MP interf
a
ce (MP = multi-pump) i
s
u
s
ed.
• Both pump
s
a
re controlled by the m
as
ter.
If one of the pump
s
m
a
lfunction
s
, the other will run
a
ccording to the
m
as
ter'
s
control
s
etting
s
. If there i
s
a
tot
a
l f
a
ilure of the m
as
ter, the
s
l
a
ve will run
a
t the emergency oper
a
tion
s
peed.
The emergency oper
a
tion
s
peed c
a
n be
s
et in menu <5.6.
2
.0> (
s
ee
Section 6.3.3 on p
a
ge 58).
• The m
as
ter'
s
di
s
pl
a
y will
s
how the
s
t
a
tu
s
of the double pump. On the
s
l
a
ve di
s
pl
a
y, “SL” will
a
ppe
a
r.
• The m
as
ter pump i
s
the left pump in the direction of flow.
Connect the differenti
a
l pre
ss
ure
s
en
s
or to thi
s
pump.
The me
as
uring point
s
of the differenti
a
l pre
ss
ure
s
en
s
or of the m
as
ter
pump mu
s
t be on the
s
uction
a
nd pre
ss
ure
s
ide of the double-pump
s
y
s
tem in the re
s
pective collector pipe.
InterFace-Module (IF-Module)
For communic
a
tion between pump
s
a
nd the m
a
in computer for the
pump
s
, one IF-Module (
a
cce
ss
ory) i
s
required per pump. Thi
s
i
s
plugged into the termin
a
l
s
p
a
ce (Fig. 1).
• The m
as
ter-
s
l
a
ve communic
a
tion u
s
e
s
a
n intern
a
l interf
a
ce (termin
a
l:
MP, Fig. 19).
• For u
s
e of
a
m
a
in computer for the pump
s
(PLR)/interf
a
ce converter
or the LON interf
a
ce, the m
as
ter pump mu
s
t be connected to the PLR
or the LON. Only the m
as
ter pump need
s
to be equipped in thi
s
c
as
e
with
a
PLR or LON module.
• Norm
a
lly for double pump
s
, only the m
as
ter pump mu
s
t be equipped
with
a
n IF-Module.
Communication
Master
Slave
PLR/Interf
a
ce converter
PLR IF-Module
not nece
ssa
ry
LONWORKS network
LON IF-Module
not nece
ssa
ry
BACnet
BACnet IF-Module not nece
ssa
ry
Modbu
s
Modbu
s
IF-Module not nece
ssa
ry
CAN bu
s
CAN IF-Module
not nece
ssa
ry
