Actuating Device When Analog Signal Exceeds Threshold; Power Concept - Siemens LMU54 Series Basic Documentation

Actuating device when
analog signal exceeds
threshold

Power concept

Siemens Building Technologies
HVAC Products
This function is used to activate the output when the input signal at the clip-in function
module has crossed the response threshold.
The function is only possible in connection with the → Predefined setpoint or →
Predefined output via the input of the clip-in function module.
The response threshold with the predefined setpoint is reached when the input signal
corresponds to a temperature level above 5 °C.
With the predefined output, the response threshold is defined by parameter
«PAnfoExtSchwelle».
The LMU... has an integrated mains transformer to provide extra low-voltage power for
−
the LMU...
−
the HMI
−
the RU
−
maximum 2 clip-in modules (e.g. AGU2.500 / OCI420)
An additional external transformer is required only when using a DC 24 V fan or for
stepper motor control.
Basic Documentation LMU54... / LMU64...
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CC1P7494en
07.11.2002