Wilo Yonos GIGA2.0-I Installation And Operating Instructions Manual page 179

Installation and operating instructions Wilo-Yonos GIGA2.0-I/-D
Communication interfaces: Setting and function
Fig. 76: Behaviour of analogue input AI2: Setpoint with signal type 2 ... 10 V / 4 ... 20 mA
With an analogue signal between 1 V and 2.8 V or between 2 mA and 5.6 mA, the motor
is switched off.
The cable break detection is active.
An analogue signal smaller than 1 V or 2 mA is detected as a cable break. In this case, a
set substitute setpoint takes effect. The substitute setpoint is set in the menu "Control
setting [} 154] –Setting the setpoint source [} 157]" (see Fig. 71 Control setting with
emergency operation mode).
Depending on the set control mode, the following can be set as substitute setpoint:
ƒ
A speed (for control mode "Constant speed n-c")
ƒ
A delivery head (for the control modes "Differential pressure Δp-v" and "Differen-
tial pressure Δp-c")
Universal Display text
1.0 Settings
1.1 Control settings
1.1.10 Substitute setpoint
Signal type 0 ... 10 V / 0 ... 20 mA:
If an external setpoint sensor is set up at analogue input AI2, the signal type must be
set. In this case 0 ... 10 V or 0 ... 20 mA.
The analogue signal runs between 4 V and 10 V or between 8 mA and 20 mA. The ana-
logue signal is interpolated linearly. The applied analogue signal of 1 V ... 4 or
2 mA ... 8 mA represents the setpoint value (for instance the speed) at "0 %". The ap-
plied analogue signal of 10 V or 20 mA represents the setpoint of the differential pres-
sure at "100 %". (See diagram Fig. 77).
Fig. 77: Behaviour of analogue signal AI2: Setpoint for signal type 0 ... 10 V / 0 ... 20 mA
If the analogue signal is less than 1 V or 2 mA, the motor is switched off.
The cable break detection is not active.
NOTICE
After selecting one of the external sources, the setpoint is coupled to this external
source and can no longer be adjusted in the setpoint editor or in the Home screen.
This coupling can only be cancelled in the menu "Setting the setpoint source"
[} 157]. The setpoint source must be adjusted again to "Internal setpoint".
The pairing between external source and setpoint is marked both in the
screen, and in the setpoint editor in blue. The status LED also becomes blue.
en
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