Installation and Operating Instructions

Table Of Contents
L2 L3L1
PE
N
NN
L2 L3
L1 N
EARTH
B
A
B
A
PE PTC1
PTC2
T2
T3T1
T2
T3
T1
M1
M2
TM070126
Three-phase connections for two pumps
L2 L3L1
PE
N
N
L2 L3
L1
EARTH
B
A
B
A
PE PTC1
PTC2
T2
T3T1
T2
T3
T1
M1
M2
TM072496
Three-phase connections for two pumps without
neutral, for Norway only
Related information
6.15.4 Setting the motor protection with Grundfos
GO Remote
8.2 Code 2 (Power phase missing)
8.4 Code 9 (Power phase sequence wrong)
2.3.4 Connecting a level sensor
You can either connect an analog level sensor, such
as a pressure sensor, or a digital level sensor, such
as a float switch.
1. Loosen the screws and remove the front cover.
Be careful not to damage the cable between the
front cover and the back cover.
2. Lead the wires through one of the cable glands.
3. Depending on the type of wire, take one of the
following actions:
For a shielded wire, lead it through the cable
clamp.
CIO1
GND
TM070571
For a not shielded wire, attach it to the
protection cover with a cable tie.
DIO1
GND DIO2
GND DI1 GND DI2
GND
CIO1
GND
CIO2 GND 24V
GND
24V GND
TM070760
4. Depending on the type and function of the
sensor, connect the wires to the following
terminals. When using an analog sensor, level
switches can be used to add redundance or
security by adding an extra dry-run sensor or
high-level sensor or both.
Sensor
type
Sensor
function
Terminals
Analog All levels
CIO1 - GND - 24
V
Digital
Dry-running
level
CIO2 - GND
Stop level DIO1 - GND
Start level,
pump 1
DIO2 - GND
Start level,
pump 2
DI1 - GND
High level DI2 - GND
9
English (GB)