Siemens LMU64 Series - Actuating Device When Analog Signal Exceeds Threshold; Power Concept

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 7 DHW control (BWR) 07.11.2002
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.
Actuating device when
analog signal exceeds
threshold
Power concept