Grundfos IO 111, Installation And Operating Instructions Manual

Page: 10 / 148

E
ngli
sh (
G
B)
10
5.3.1 Connecting the WIO sensor
Fig. 5 Connecting the WIO sensor
5.3.2 EMC-correct installation
It is especially important to ensure an EMC-correct
installation of pumps with frequency converter.
The following rules must be observed:
• Connect the cable screen to earth.
• Do not twist screen ends, as this will destroy the
screen effect at high frequencies. Use cable
clamps as shown in fig. 6.
• It is important to ensure a good electric contact
from the mounting plate through the mounting
screws to the metal cabinet of the frequency
converter.
• Use toothed washers and a galvanically
conducting mounting plate.
Fig. 6 Screen fixed with cable clamp
6. Settings
6.1 Potentiometer
The warning limit for stator insulation resistance is
set by means of a potentiometer (pos. 4) see fig. 1.
The limit can be set between 10
and 1 M
Ω
.
Fig. 7 Potentiometer
6.2 DIP switches
The IO 111 must be configured for the pump
connected by means of the DIP switches (pos. 11),
see fig. 1.
Fig. 8 DIP switches
A configuration alarm will be given if
• the configuration does not correspond to the
pump connected.
• the configuration fault is of safety-related
importance (see
8. Indication , point 6).
A configuration warning will be given if
• the configuration fault is of function-related
importance (see
8. Indication , point 15), see
12. Fault finding .
T
M
0
4 030
4 0308
T
M
03 1
080 1
005
Reset
P1 P2 P3 P4 P5 I1 I2 I3
ON DIP
1 2 3 4 5 6 7 8 9 10
White
Brown
WIO sensor
Note the insulating plastic
layer between screen and
sheath.
Note
The alarm limit is 1 M
Ω
.
T
M
03
3415
0306
T
M
03 06
78 050
5
1 M
Ω
10 M
Ω
ON DIP
1 2 3 4 5 6 7 8 9 10
Grundfos.bk Page 10 Tuesday, January 25, 2011 12:56 PM