46
Wilo Salmson France SAS 11-2016 V05 DIN A4
English INSTALLATION
3-wire connection cable
Wire colour
Terminal
brown (bn)
L
blue (bu)
N
green/yellow (gn-ye)
Earth (PE)
5.5.4. Three-phase AC motor
Fig. 5.: Connection diagram for motor version "S"
L1
Mains connection
PE Earth
L2
20
Bimetallic strip
L3
21
Fig. 6.: Connection diagram for motor version "P"
L1
Mains connection
DK Leakage detection for
motor compartment
L2
L3
20
Bimetallic strip
PE Earth
21
The three-phase current version is supplied with
bare cable ends. The connection to the mains is
made at the switchgear.
Electrical connections may only be made by a
qualified electrician!
The wires of the connection cable are assigned as
follows:
6-wire connection cable
Wire number
Terminal
1
Temperature monitor for wind-
ing
2
3
U
4
V
5
W
green/yellow (gn-ye)
Earth (PE)
7-wire connection cable
Wire number
Terminal
1
Temperature monitor for wind-
ing
2
3
U
4
V
5
W
6
Leakage detection for motor
compartment
green/yellow (gn-ye)
Earth (PE)
If the pump is fitted with a plug, it is connected to
the mains by inserting the plug into a socket.
5.5.5. Connecting the monitoring devices
RISK
of fatal injury due to explosion!
If the monitors are not connected correctly,
there is a risk of fatal injury due to explosion
if used in potentially explosive areas! Al
-
ways have the connection carried out by an
electrician. If the pump is used in potentially
explosive areas:
• the temperature monitor must be connected
via an evaluation relay. We recommend the
“CM-MSS” relay for this. The threshold is
already pre-set.
• Deactivation by the temperature limiter
must be conducted with an anti-reactivation
device! Reactivation should only be possible
if the “release button” has been manually
activated!
• The pencil electrode for sealing chamber
control must be connected via an intrinsi-
cally safe circuit with an evaluation relay. We
recommend the “XR-41x” relay for this. The
threshold is 30 kOhm.
• Also note the additional information in the
appendix!
All monitoring devices must be connected at all
times!
Temperature monitoring of the single-phase AC
motor
The temperature monitoring unit is integrat-
ed in the single-phase AC motor and switches
automatically. The monitoring function is always
active and does not need to be connected sepa-
rately.
Temperature monitoring of the three-phase AC
motor
The pump is equipped with a temperature limit as
standard (1-circuit temperature monitoring). Bi
-
metallic strips must be connected in the switch-
gear itself or via an evaluation relay. When the
threshold is reached, the pump must switch off.
Connection values: max. 250 V(AC), 2.5 A, cos φ
= 1
For this reason, no warranty claims can be accept-
ed for any damage to the winding resulting from
unsuitable motor monitoring!
Motor compartment (motor version "P" only)
The motor compartment monitor must be con-
nected via an evaluation relay. We recommend
the “NIV 101/A” relay for this. The threshold is
30 kOhm. When the threshold is reached, the
pump must switch off.
Connecting the pencil electrode (available as an
option) for sealing chamber control
The pencil electrode must be connected via an
evaluation relay. We recommend the “NIV 101/A”
relay for this. The threshold is 30 kOhm. When the
threshold is reached, a warning must be given or
the unit switched off.
