Mixing Group - Siemens RVS41.813 User Manual

Only RVS41..

Mixing group

Only RVS61..
Function mixing group 1
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Siemens Switzerland Ltd
HVAC Products
3-phase current
For monitoring the 3-phase current, the 3 phases must be connected to inputs Ex5, Ex6
and Ex7 in the correct order (L1, L2, and L3). The controller monitors the correct
temporal order of the 3 phases. Any phase asymmetry, phase interruption or too low
rated voltage of one or several phases is regarded as a 3-phase error.
If a 3-phase error is continuously present during the period of time set under "Delay 3-
phase error" (2894), the compressor is switched off for the minimum off time. The
controller delivers status message 180: Current asymmetrical.
If the 3-phase error occurs again within "Duration error repetition" (2889) for at least the
delay time, the heat pump initiates lockout, if the preselected number of errors has
been exceeded. The controller delivers error message 355: Current asymmetrical.
The heat pump must be manually reset.
Low-pressure switch E9
Input of a low-pressure switch (AC 230 V) upstream of the compressor.
High-pressure switch E10
Input of a high-pressure switch (AC 230 V) downstream from the compressor.
Overload compressor 1 E11
Input of an overload protection signal (AC 230 V) to compressor 1.
Error/alarm message
Input of an external error / alarm signal (AC 230 V).
Line no. Operating line
6014 Function mixing group 1
None
Heating circuit 1
Cooling circuit 1
Heating/cooling circuit 1
Primary controller / system pump
DHW primary controller
Instantaneous DHW heater
Defines use of mixing group 1 and of its inputs and outputs.
The settings are made on the respective menu page (heating circuit 1, cooling circuit 1,
etc.). Use the table below for the logical assignment of the sensors / relays of the
mixing group function to the physical terminals of the mixing group:
Logical assignment of sensors and relays per
mixing group function
B1 p B1
Y1 Y1
T
Y2 Y2
Q2 S Q2
User manual RVS61.843, RVS41.813
6 The settings in detail
B16 B1 B15
Y23 Y1 Y19
Y24 Y2 Y20
Q24 Q2 Q14
B35 B38
Y31 Y33
Y32 Y34
Q3 Q34
CE1U2355en_02
28. September 2009