Grundfos IO 111 User Manual

English (GB)
18
12. Fault finding
* Only for non-Ex applications with DIP switch 10 in position off.
Warning
Before any fault finding, make sure that the fuses have been removed or the mains switch
has been switched off. It must be ensured that the power supply cannot be accidentally
switched on.
Fault Cause Remedy
The indicator light on the IO 111
is flashing at start-up. This
indicates configuration warning.
The DIP switch setting is
incorrect.
Set the DIP switch, see 6.3.
The indicator light on the IO 111
is on. This indicates general
warning (only IO 111 with
communication module).
The connection between the
IO 111 and SM 111 is
interrupted, or the setting of DIP
switches 1 and 2 (pos. 11) is
incorrect.
Re-establish the connection or
reconfigure the DIP switch 1
and 2 (pos.11).
The indicator light on the IO 111
is flashing after correction of
fault. This indicates
configuration warning (only
IO 111 with communication
module).
The connection between the
IO 111 and SM 111 is
interrupted, or the setting of DIP
switches 1 and 2 (pos. 11) is
incorrect.
Re-establish the connection or
reconfigure the DIP switch 1
and 2 (pos.11).
Green indicator light (pos. 12) is
not on when the pump is
running.
Conductor for contactor status
has not been connected to
terminals K1 and K2 (pos. 2).
Connect the conductor.
New oil does not show 4 mA on
analog output 1.
The oil in the oil chamber has
not been changed completely, or
it was changed to another type.
Calibrate the IO 111 to the
new oil, see 9. Calibration.
Yellow indicator light for stator
insulation resistance is on during
installation.
The warning limit for stator
insulation resistance is too low.
Set a higher limit on the
potentiometer, see 6.1.
The water-in-oil sensor
previously indicated water in the
oil, but now it indicates less than
5 % water in the oil.
The power supply to the IO 111
has been interrupted.
Let the pump run for some
time and check again.
Temperature alarm is indicated
but the pump is not hot.
ATEX/IECEx protection is
activated, and one of the
additional alarms is shown.
Check connection to the
SM 111.
The SM 111 cannot detect the
sensor.*
Fault in signal from sensor.
Re-establish the signal, e.g.
by changing the setting of DIP
switch 9 or by securing the
wire connection from sensor
to SM 111.
Grundfos.bk Page 18 Tuesday, January 25, 2011 12:56 PM

Grundfos IO 111 Specifications

General

Brand	Grundfos
Model	IO 111
Category	Control Unit
Language	English