The electrical connection of the frequency con-
verter must correspond to the diagrams contained
in the following table:
The frequency converter could be dam-
aged if connected incorrectly.
The electric cable is never to be allowed to
come into contact with either the pipe or the
pump. Furthermore, it must be completely
shielded against moisture.
Property damage is possible!
Because of operational settings, an incor-
rectly disconnected core in the connec-
tion area could damage the frequency
converter.
• Disconnect the core at both of its end
points from electrical connection
• Pull it off
English
WILO SE 05/2008
17
Details concerning the electrical connections - loosen screws and remove upper cover of the frequency converter.
Mains connection
Connect three lines of the cable to the
3 connection terminals of the board.
(Phase + Earth).
Connecting the inputs/outputs
3 operating modes exist:
(see Chapter 6: Commissioning)
manual mode:
Mode 1
Pressure regulation:
Mode 2
Operation by external control:
Mode 3
NOTE: The configuration at the time of
delivery is either Mode 1-3 or Mode 2,
depending on the desired type of pump
control unit. A programming key is used
to switch from Mode 1-3 to Mode 2 (or vice-
versa); an after-sales service employee must
be called in.
Cores
Ø 2.5 mm
2
Connection terminal
Main fuse 20 A
Connection terminals
inputs/outputs
(see
Fig. 3,
Pos. 20)
(see
Fig. 3)
+24
V
D
C
m
ax.
30
mA
+
1
0
VD
Cm
a
x
.3
0m
A
Zer
o
V
o
lt
External
ON/OFF
Err
o
r
relays
potential-fr
ee
contact:
250
V–1
A
1 2 3 4 5 6
7 8 9 10 11 12 13 14
L
N
ATTENTION!
PE
+24
V
+24
V
0V
+10
V
ATTENTION!
Summary of Contents for MHIE 1ph
Page 2: ...Fig 1 Fig 3 Fig 2 Fig 4 Fig 5 or ou or ou...
Page 3: ...Fig 6 Fig 8 Fig 7 or ou or ou...
Page 4: ...Fig 9 Fig 10...
