en
Installation and electrical connection
22
WILO SE 2017-12
5
1
2
4
3
M 3~
gn-y
e
W
V
11
10
U
PE
6
DK
Fig. 9: Connection diagram: PTC sensor, direct
starting
Wire
Designa-
tion
Terminal
1, 2
10, 11
Monitoring of motor winding
3
U
L1
4
V
L2
5
W
L3
6
DK
Monitoring of motor compartment
Green/yellow (gn-
ye)
PE
Earth
6.5.5
Monitoring equipment connection
Refer to the enclosed connection diagram for details regarding the connection and in-
stallation of the monitoring devices.
Electrical connection must always be carried out
by a qualified electrician!
NOTICE! The individual wires are designated according to the connection diagram.
Do not cut the wires! There is no additional assignment between the wiring diagram
and connection diagram.
DANGER
Risk of explosion due to incorrect connection!
If the monitoring devices are not connected correctly, there is a risk of fatal injury
due to explosion in potentially explosive areas! Connection must always be carried
out by a qualified electrician. If used in potentially explosive areas:
• Connect the thermal motor monitoring via an evaluation relay!
• Deactivation by the temperature limiter must be conducted with reactivation
lock! It must only be possible to restart the unit when the unlock key has been
actuated by hand!
• Connect the external electrode (e.g. sealing chamber control) via an evaluation
relay with an intrinsically safe circuit!
• Note the additional information in the chapter on potentially explosive areas
found in the appendix of these installation and operating instructions!
Overview of monitoring devices:
P 13
Motor compartment
•
Motor winding: temperature limiter
(1-circuit temperature monitoring)
•
Motor winding: temperature controller
(2-circuit temperature monitoring)
o
Sealing chamber
o
Key: - = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
6.5.5.1
Monitoring of motor compart-
ment (P 13 motor only)
Connect the electrodes via an evaluation relay. Relay “NIV 101/A” is recommended for
this. The threshold is 30 kOhm.
Wiring diagram
DK
Electrode connection
When the threshold is reached, deactivation must take place!
6.5.5.2
Monitoring of motor winding
