Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 117

Select substitute setpoint. This setpoint is used when detecting a cable break at the external setpoint
source.
Actual value sensor
The actual value sensor provides:
• Temperature sensor values for temperature-dependent control modes:
–
Constant temperature
–
Differential temperature
–
Room temperature
• Temperature sensors values for temperature-dependent additional functions:
–
Heating/cooling quantity measurement
–
Automatic heating/cooling switchover
–
Automatic detection of thermal disinfection
• Differential pressure sensor values for:
–
Differential pressure control with index circuit actual value logging
• User-defined sensor values for:
–
PID control
Possible signal types when selecting the analog input as actual value input:
Actual value sensor signal types:
0 ... 10 V: voltage range of 0 ... 10 V for transfer of measurement values.
2 ... 10 V: voltage range of 2 ... 10 V for the transfer of measurement values. Cable break is detected for a
voltage below 2 V.
0 ... 20 mA: electric current range of 0 ... 20 mA for transfer of measured values.
4 ... 20 mA: electric current range of 4 ... 20 mA for transfer of measured values. A cable break is detected in
case of electric current below 4 mA.
PT1000: The analog input evaluates a PT1000 temperature sensor.
Actual value sensor configuration
NOTICE
The selection of the analog input as a connection for a sensor requires the corresponding
configuration of the analog input.
First open the overview menu to view the current configuration and use of analog input.
To do this, in the "Settings" menu
1. "External interfaces"
2. "Function analog input AI1" or "Function analog input AI2"
3. "Overview of the analog input".
Type of use, signal type, and other set values for selected analog input will be displayed. In order to make or
change settings:
In the "Settings" menu
1. "External interfaces"
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
, select
, select
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