Engli
s
h
In
s
t
a
ll
a
tion
a
nd oper
a
ting in
s
truction
s
Wilo-VeroLine IP-E, Wilo-VeroTwin DP-E
63
7.2
Electrical connection
Safety
DANGER! Risk of fatal injury!
Improper electrical connections can lead to fatal electrical shocks.
• Have the electrical connection established by an electrician
approved by the local electricity supplier only, in accordance with
local regulations.
• Observe the installation and operating instructions for the acces-
sories!
DANGER! Risk of fatal injury!
Contact voltage can be life-threatening
Work on the module may only be started once 5 minutes have
passed, due to the dangerous residual contact voltage (capacitors).
• Before working on the pump, disconnect the power supply and
wait for 5 minutes.
• Check to ensure all connections (including potential-free contacts)
are voltage-free.
• Never use an object to poke around the openings on the module
and never insert anything into the module!
WARNING! Risk of mains overload!
An inadequate mains design can lead to system failures and even to
cable fires due to mains overload.
• When designing the mains, with regard to the cable cross-sections
and fuses, give special consideration to the fact that short-term
simultaneous operation of all pumps is possible in multi-pump
operation.
Preparation/notes
• The electric
a
l connection mu
s
t be e
s
t
a
bli
s
hed vi
a
a
fixed power c
a
ble
(cro
ss
-
s
ection to be m
a
int
a
ined: 4 x 1.5 mm
2
, min.; 4 x 4 mm
2
, m
a
x.),
which h
as
a
plug
a
tt
a
chment or
a
n
a
ll-pole
s
witch with
a
cont
a
ct
opening of
a
t le
as
t 3 mm. The power c
a
ble i
s
to be fed through the
M
2
5 thre
a
ded c
a
ble connection (Fig. 18, Item 1).
• In order to comply with electrom
a
gnetic comp
a
tibility
s
t
a
nd
a
rd
s
, the
following c
a
ble
s
mu
s
t
a
lw
a
y
s
be
s
hielded:
• DDG (if in
s
t
a
lled on-
s
ite)
• IN
2
(
s
etpoint)
• DP communic
a
tion (for c
a
ble length
s
> 1 m); (“MP” termin
a
l)
P
a
y
a
ttention to pol
a
rity:
MA = L
=> SL = L
MA = H => SL = H
• Ext. Off
• AUX
The
s
hield mu
s
t be
a
pplied to both
s
ide
s
: on the EMC c
a
ble clip
s
in the
module
a
nd on the other end. The line
s
for SBM
a
nd SSM do not h
a
ve
to be
s
hielded.
• In order to en
s
ure drip protection
a
nd
s
tr
a
in relief on the thre
a
ded
c
a
ble connection, c
a
ble
s
with
a
s
ufficient outer di
a
meter mu
s
t be
u
s
ed
a
nd mu
s
t be
s
crewed
s
ufficiently tightly. Al
s
o, the c
a
ble
s
ne
a
r
the thre
a
ded c
a
ble connection
a
re to be bent to form
a
dr
a
in
a
ge loop,
to dr
a
in
a
ny
a
ccumul
a
ted drip
s
. Po
s
ition the thre
a
ded c
a
ble connec-
tion or l
a
y the c
a
ble
s
a
ccordingly to en
s
ure th
a
t no drip
s
c
a
n run into
the module. Non-
ass
igned thre
a
ded c
a
ble connection
s
mu
s
t rem
a
in
s
e
a
led with the plug
s
provided by the m
a
nuf
a
cturer.
Fig. 18: M25 threaded cable connection
1
