6
en
2.2 Electrical connection
WARNING! Electric shock!
Upon opening the housing, live parts are exposed!
ÎAlways disconnect the device from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to damage to electronic
components!
ÎTake care to discharge properly before touching the
inside of the device! To do so, touch a grounded sur-
face such as a radiator or tap!
Note
Connecting the device to the power supply must always be the last step
of the installation!
Note
It must be possible to disconnect the device from the mains at any time.
ÎInstall the mains plug so that it is accessible at any time.
ÎIf this is not possible, install a switch that can be accessed.
If the mains cable is damaged, it must be replaced by a special connection
cable which is available from the manufacturer or its customer service.
Do not use the device if it is visibly damaged!
Depending on the product version, mains cables and sensor cables are already con-
nected to the device. If that is not the case, please proceed as follows:
Attach exible cables to the housing with the enclosed strain relief and the corre-
sponding screws.
The stripped length of the cables must be at least 8 mm.
Connect the temperature sensors (S1 to S4) to the terminals S1 to S4 (either
polarity).
S1 = Sensor 1 (ow HQM 1)
S2 = Sensor 2 (return HQM 1)
S3 = Sensor 3 (ow HQM 2)
S4 = Sensor 4 (return HQM 2)
The cables carry low voltage and must not run together in a cable conduit with
cables carrying a voltage higher than 50 V (please pay attention to the valid local
regulations).The cable lentghs depend on the cross sectional area. Example: up to
100 m at 1.5 mm², up to 50 m at 0.75 mm². The cables can be extended with a
two-wire cable.
K1 and K2 are combined inputs for ow rate sensors.
Connection example
07.11.2019
1.120181212
1 : 1
WMZ Plus
T.Weber
Kundenfreigabe:Typenschilder
Customer approval:Type labels
FB055
Ident.-Bezeichnung Ident. designation
Herausgabeindex:
Issue index:
erteilt am:
Date of approval:
Änderungsindex:
Change index:
Art.-Nr.:
Art. no.:
Unterschrift:
Signature:
ja /yes nein /no
Name in Druckbuchstaben:
Name in block letters:
Kundenfreigabe Customer approval
Format:
Format:
RESOL-Basis-Art.-Nr.:
Basic RESOL art. no.:
Datum:
Date:
Bearbeiter:
Issuer:
Bemerkungen:
Remarks:
Urheberrecht / Copyright
Das Copyright für die von der Firma RESOL –Elektronische Regelungen GmbH selbst erstellten Objekte, Dokumente, Grafiken,Abbildungen,Tondoku-
mente,Videosequenzen,Texte etc. bleibt allein bei der Firma RESOL.EineVervielfältigung,Weitergabe an Dritte,Veränderung der Inhalte oder dieVerwen-
dung in elektronischen oder gedruckten Publikationen ist ohne ausdrückliche Zustimmung der Firma RESOL nicht gestattet.
Please note that RESOL – Elektronische Regelungen GmbH owns the sole copyright on objects, documents, graphics, pictures, audio and video
documents, texts, etc. published and created by RESOL – Elektronische Regelungen GmbH. Copying, distribution to third parties, changing the contents
or using these contents in electronic or printed publications is not permitted without the explicit approval by RESOL.
Typenschild
Type label 1121155711211557
VBusS0 1
S0 2
GND
GND
DE-45527 Hattingen
Heiskampstr. 10
WMZ Plus
Made in Germany
Sensors
S1
S3
1 - +
- +
2 3 4 5
1 2 3 4 5
100 - 240V ~
T200mA
50 - 60 Hz
S2
S4 N L
IP 20
SD
K1
K2
Hz mA/V
5V Out0V
Hz
GND mA/V
+5V
K1 – HQM 1 / K2 – HQM 2
GND Sensor ground
1 Flow rate signal (frequency)
2 For Grundfos Direct SensorTM VFS temperature only (yellow)
3 For Grundfos Direct SensorTM VFS ow rate only (white)
4 4-20-mA input (convertible to 0-10V)
5 Sensor power supply 5 V
