Motor Protection And Activation Types - Wilo -Rexa PRO V06DA-110/EAD1X2-T0015-540-O Einbau- Und Betriebsanleitung

English
The wires of the connection cable are assigned as fol-
lows:
7-wire connection cable
Wire number
1
2
3
4
5
6
Green/yellow
5.6.3 Three-phase current motor
Fig. 5: Connection plan with bimetal sensor
L1
L2 Mains supply
L3
PE Ground
Fig. 6: Connection plan with PTC sensor
L1
L2 Mains supply
L3
PE Ground
The three-phase current version is supplied with free
cable ends. The connection to the mains is made at the
switch box terminals.
Electrical connections may only be made by a
qualified electrician!
If the unit has a plug, it is connected to the electricity
supply by plugging it into the electricity socket.
The wires of the connection cable are assigned as fol-
lows:
7-wire connection cable
Wire no.
1
2
3
4
5
6
Green/yellow
40
Terminal
Temperature monitor for wind-
ing
L (U1/Z1)
N (U2)
Z2 - connection for the oper-
ating capacitor
Seal integrity monitor for
motor chamber
Ground (PE)
Seal integrity monitor for
DK
motor chamber
20
Bimetal sensor
21
Seal integrity monitor for
DK
motor chamber
10
PTC sensor (according to
DIN 44081)
11
Terminal
Temperature monitor for wind-
ing
U
V
W
Seal integrity monitor for
motor chamber
Ground (PE)
The wire assignments shown apply to standard prod-
ucts in the PRO series.
The wiring diagram supplied with these instruc-
tions shows the wire assignment of freely config-
urable units in the PRO series.
5.6.4 Monitoring device connections
Each monitoring device must always be connected.
Motor temperature monitor
• Bimetal (connection values: max. 250 VAC, 2.5 A,
cos M = 1) and PTC sensors (in accordance with DIN
41088) must be connected via an evaluation relay. We
recommend the "CS-MSS" relay for this. The threshold
is already preset.
When the threshold is reached, the following must
occur:
• If there is only one temperature circuit, the unit must
be switched off.
• If there are two temperature circuits, the low value
causes an "early warning" and the higher value
causes the unit to "switch off".
When used in explosion hazard areas: The tem-
perature monitoring system should be connected
in such a manner that if the "early warning" is
triggered an automatic switch on can be per-
formed. If a "switch off" is triggered then
switching on again should only be possible if the
"release button" has been manually activated!
For this reason, no warranty claims can be accepted for
damages to the winding resulting from unsuitable
motor monitoring.
Seal integrity monitor for motor chamber
• The seal integrity electrode in the motor chamber must
be connected via an evaluation relay. We recommend
the "NIV 101" relay for this. The threshold is 30 kOhm.
When the threshold is reached, the unit must switch
off.
Connecting the optionally available leak electrode for
the oil separation chamber
• The leak electrode must be connected via an evalua-
tion relay. We recommend the "ER 143" relay for this.
When used outside explosion hazard areas the
"NIV 101" relay is suitable. The threshold is 30 kOhm.
When the threshold is reached, a warning must be
given or the unit switched off.
Caution!
If there is only a warning, the unit could be irrep-
arably damaged by water entering. We always
recommend switching off!

5.7 Motor protection and activation types

5.7.1 Motor protection
The minimum requirement for three-phase motors is a
thermal relay/motor protection switch with tempera-
ture compensation, differential triggering and an anti-
reactivation device in accordance with VDE 0660 or the
appropriate national regulations.
WILO SE 10/2011 V4.1WE