Wilo Control EC-WP Series Installation And Operating Instructions Manual page 19

24 V
Fig. 16: Connection overview symbol
6.5.13 Connection of an actual pressure
value display (pressure control
only)
0-10 V
Fig. 17: Connection overview symbol
6.5.14 Connection ModBus RTU
Fig. 18: Jumper position
6.6 Control modes: Description and
connection of the sensors
Installation and operating instructions • Wilo-Control EC-WP • Ed.01/2024-08
An external alarm signal (horn, flashing light, etc.) can be connected. The output is switched
in parallel to the collective fault signal (SSM).
• Alarm signal suitable for DC voltage.
• Connection load: 24 V=, max. 4 VA
• NOTICE! Observe the correct polarity when connecting!
• Activate output in menu 5.67.
Insert the connection cables laid by the customer through the threaded cable glands and se-
cure. Connect the wires to the terminal strip according to the connection diagram. Use the
terminal number shown in the connection overview on the cover.
CAUTION
Property damage due to external voltage!
An external voltage which is applied destroys the component.
• Do not apply external voltage (connect potential-free).
The actual pressure value is transmitted via a separate output. A voltage of 0 to 10 V= is
provided for this at the output:
• 0 V = pressure sensor value "0"
• 10 V = pressure sensor upper limit
Example:
–
Pressure sensor measurement range: 0 – 16 bar
–
Display range: 0 – 16 bar
–
Setting: 1 V = 1.6 bar
Insert the connection cable laid by the customer through the threaded cable glands and se-
cure it. Connect the wires to the terminal strip according to the connection diagram. Use the
terminal number shown in the connection overview on the cover.
CAUTION
Property damage due to external voltage!
An external voltage which is applied destroys the component.
• Do not apply external voltage (connect potential-free).
See Overview of components [" 11] for position numbers
9 ModBus: RS485 interface
10 ModBus: Jumper for termination/polarisation
The ModBus protocol is available for connection to a building management system.
• Insert the connection cable laid by the customer through the threaded cable glands and
secure.
• Connect the wires to the terminal strip according to the connection diagram.
Observe the following points:
• Interface: RS485
• Field bus protocol settings: Menu 2.01 to 2.05.
• The switchgear is terminated at the factory. Remove termination: Remove jumper "J2".
• If the ModBus requires a polarisation, plug in jumpers "J3" and "J4".
The individual control modes and the corresponding connections of the individual sensors
are described in the following sections.
en
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