Electrical Connection - Three-Phase Pumps; Alarm Relay/Communication Connection; Configuration; Default Settings - Grundfos SEG AUTOADAPT Montage- Und Betriebsanleitung

9.3 Electrical connection –
three-phase pumps
The pump motor is designed so that the phase
sequence in the electrical panel is clockwise (can be
determined with a phase sequence detector).
The pump does not start unless the phase sequence
is correct.
If the dry-running sensors are covered by liquid, and
the pump does not start, the cause may be a wrong
phase sequence. Interchange L1 and L2.
Fig. 4 Wiring diagram for three-phase pumps

9.4 Alarm relay/communication connection

The pump incorporates an alarm relay output.
NC and NO are available and can be used as
required, for example for acoustic or visual alarms.
Alternatively, the wires 4 and 6 can be used for
external communication via a CIU unit
(communication interface).
If a CIU unit is connected, the relay
must not be used. The CIU unit
Note
incorporates a relay which takes over
the alarm function.
See example of wiring diagram in the documentation
supplied with the CIU unit.
18
2 A 230 VAC

10. Configuration

10.1 Default settings

The pump is supplied from the factory with the
following default settings.
0.9 - 1.5
Parameter
kW
Start delay
Off
(random)
Start level 25 cm
High-level alarm + 10 cm
Anti-seizing:
Interval 3 days
Duration 2 sec.
If one or more of the above parameters are to be
changed, use the optional CIU unit together with
an R100 remote control.
The CIU unit can be connected temporarily for
configuration.
For further information, see installation and
operating instructions for the CIU unit.
Fig. 5 Start and stop levels

10.2 Pump alternation

If several pumps (up to four) are installed in the
same tank, the control logic incorporated in the pump
will ensure that the load is distributed evenly among
the pumps over time.
Alternation is carried out according to a patented
method based on measurement of the liquid level
in the tank.
The barometric pressure may affect the
Note
alternating sequence.
3.1 - 4.0
2.6 kW
kW
– –
– –
– –
– –
– –
Alarm
Start
Stop