Installation And Position Of Additional Sensors To Be Con- Nected; Electrical Connection - Wilo Yonos GIGA2.0-I Einbau- Und Betriebsanleitung

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Fig. 18: Example – differential pressure
sensor connection in y-pipe installation
6.7 Installation and position of addi-
tional sensors to be connected
7

Electrical connection

140
Two single pumps as twin-head pump in Y-piece:
In the example in Fig. 18, the main pump is the left-hand pump in the direction of flow. Con-
nect the differential pressure sensor to this pump!
The two single pumps must be connected and configured to form a twin-head pump. See
"Operating the pump" [" 153] section and "Twin-head pump operation" [" 165] section.
The measuring points of the differential pressure sensor must be on the suction and dis-
charge side of the twin-head pump system in the common collector pipe.
Index circuit evaluator – hydraulic index circuit in the system:
As delivered, a differential pressure sensor is installed on the flanges of the pump. Alternat-
ively, a differential pressure sensor can also be installed at the hydraulically most unfavour-
able point in the pipe network. The cable connection is connected to one of the analogue
inputs. The differential pressure sensor is configured in the pump menu. Possible signal
types on differential pressure sensors:
• 0 ... 10 V
• 2 ... 10 V
• 0 ... 20 mA
• 4 ... 20 mA
DANGER
Risk of fatal injury due to electrical current!
The use of a thermal overload protection is recommended!
Improper conduct when carrying out electrical work can lead to death
due to electric shock!
• Electrical connection may only be carried out by a qualified electrician
and in accordance with the applicable regulations!
• Adhere to accident prevention regulations!
• Before beginning work on the product, make sure that the pump and
drive are electrically isolated.
• Make sure that no one can turn on the power supply again before
work is completed.
• Make sure that all energy sources can be isolated and locked. If the
pump was switched off by a safety device, it must be secured against
switching back on again until the error has been remedied.
• Electrical machines must always be earthed. Earthing must be appro-
priate for the drive and meet the relevant standards and regulations.
Earth terminals and fixation elements must be suitably dimensioned.
• Connection cables must never touch the piping, pump or motor
housing.
• If it is possible for persons to come into contact with the pump or the
pumped fluid, the earthed connection must also be fitted with a re-
sidual current circuit breaker.
• Observe the installation and operating instructions for the accessor-
ies!
Installation and operating instructions • Wilo-Yonos GIGA2.0-I/-D • Ed.01/2023-03