Functions Of Indicator Lights - Grundfos IO 111 Montage- Und Betriebsanleitung

8.1 Functions of indicator lights

Pos. Symbol
6
7
Water < 5 %
5 % < water < 10 %
8
10 % < water < 15 %
15 % < water < 20 %
Water > 20 %
12
13
16
Description
Stator temperature
Red indicator light, stator temperature alarm.
If the indicator lights (pos. 6 and 13) flash alternately, the IO 111 is
not set correctly to the pump variant connected. See 6.3. This
indicates configuration alarm.
If ATEX/IECEx protection is activated (DIP switch 10, pos. 11),
the red light also used for these indications:
• Bearing temperature too high.
• Missing signal from bearing sensor (pump with SM 111).
• Communication alarm (pump with SM 111).
Stator insulation resistance
Stator insulation resistance is indicated by a green, yellow or red
indicator light.
Green indicator light is on when the insulation resistance is ok,
i.e. above the warning level set on the potentiometer (pos. 4).
Yellow indicator light is on when the warning limit has been
reached, see 6.1.
Red indicator light is on when the alarm limit has been reached,
i.e. below 1 M.
Note: The indicator lights are only active if the conductor for
contactor status is connected (K1, K2, pos. 2). The measurement is
only correct when the motor is stopped.
Water in oil chamber
Water in oil is indicated by two green and a yellow indicator light.
Warning: If the water content is outside the normal range or the
sensor is not connected, the yellow indicator light will flash.
Alarm: All three indicator lights will flash at the same time if there is
no oil in the oil chamber, or if the ATEX/IECEx protection is
activated (DIP switch 10, pos. 11), and the signal from water-in-oil
sensor is missing
Note: The indicator lights are only active if the conductor for
contactor status is connected (K1, K2, pos. 2).
Pump running
Green indicator light is on when the pump is running.
Note: The indicator lights are only active if the conductor for
contactor status is connected (K1, K2, pos. 2).
Moisture in motor
Red indicator light indicates alarm in case of moisture in the motor.
The indicator lights (pos. 6 and 13) will flash alternately if the IO 111
is not set correctly to the pump variant connected. See 6.3.
This indicates configuration alarm.