Wilo Stratos MAXO Serie Instrucciones De Instalación Y Funcionamiento página 192

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192
Communication interfaces: Setting and function
Max signal/value assignment
Analogue input (AI2)
Signal value
Corresponding value
Fig. 76: Max. signal/value assignment
When all signal/value assignments have been performed, the setting of the analogue
setpoint source is completed.
An editor for adjusting the substitute setpoint in the event of a cable break or wrong
configuration of the analogue input will open.
...►
Adjust input for external setpoint
Select setpoint source
Current source: Analogue input 2
Adjust setpoint source
Setpoint sensor: 4 – 20 mA
Substitute setpoint in the event of a cable
break
Current: 6.0 m
Fig. 77: Substitute setpoint in the event of a cable break
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 analogue input as actual value input:
Actual value sensor signal types:
0 – 10 V: Voltage range of 0 – 10 V for transfer of measurement values.
Set maximum point
of setpoint pump curve
of delivery head
for Δp-v.
If a
cable break at the
external setpoint source
is detected, this substitute value is
used
as the setpoint.
WILO SE 2018-11