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PE
U
V
W
M 3~
Fig. 5: Connection diagram for three-phase
current motor with plug and float switch
6.5.4
Motor protection adjustment
6.5.4.1
Direct activation
6.5.4.2
Soft starter
6.5.5
Operation with frequency con-
verter
7
Commissioning
7.1
Personnel qualifications
7.2
Operator responsibilities
7.3
Direction of rotation check (for
three-phase current motors only)
46
Commissioning
Version "A" with plug and float switch
T1
T2
S1
Wire
1
2
3
4, 5
6
Green/yellow (gn-ye)
The connection cable is equipped with a CEE plug. The connection to the mains is es-
tablished by inserting the plug into a socket. The plug is not overflow-proof. Install the
socket so that it is overflow-proof! Observe the information on the protection class
(IP) of the plug.
DANGER! If the pump is to be connected directly to the switchgear, arrange for the
electrical connection to be carried out by a qualified electrician!
Motor protection must be set depending on the selected activation type.
At full load, set the motor protection switch to the rated current (see rating plate). At
partial load, it is recommended to set the motor protection switch 5 % above the cur-
rent measured at the duty point.
At full load, set the motor protection switch to the rated current (see rating plate). At
partial load, it is recommended to set the motor protection switch 5 % above the cur-
rent measured at the duty point. The following points must also be observed:
▪ Power consumption must always be below the rated current.
▪ Complete starting and stopping within 30 s.
▪ To avoid power dissipation, bypass the electronic starter (soft start) once normal oper-
ation is reached.
Operation on the frequency converter is not permitted.
WARNING
Foot injuries due to a lack of protective equipment!
Danger of (serious) injuries during work. Wear safety shoes!
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
▪ Providing installation and operating instructions by the pump or at a place specially re-
served for it.
▪ Making the installation and operating instructions available in the language of the per-
sonnel.
▪ Making sure that the installation and operating instructions are read and understood by
all personnel.
▪ All safety devices and emergency cut-outs on the system-side must be active and
checked to ensure that they work properly.
▪ The pump is suitable for use under the specified operating conditions.
The pump has been checked and adjusted to the correct direction of rotation for a
clockwise rotating field at the factory. Connection is made in accordance with the spe-
cifications in the "Electrical connection" chapter.
Designation
Terminal
U
L1
V
L2
W
L3
T1, T2
Monitoring of motor winding
S1
Float switch
PE
Earth
WILO SE 2019-03
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