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Siemens
RXC32 – Room controller for VAV systems
CA2N3845en_06
Building Technologies
2013-06-18
All applications (including basic application 00032) allow direct interrogation of the
inputs and control of the outputs using the RXT10 commissioning and service tool. This
makes it possible to test the installation and to operate connected plant provisionally
before the complete Desigo RXC system is commissioned.
•
The L
ON
W
ORKS
® bus plug (terminals 23 and 24) can be removed and reconnected
at any time, even while the controller is in operation. Only the original bus plug may
be used.
•
Overloading outputs Y1 … Y4 may cause the thermal fuse to trip and disable the
controller. After solving the problem, briefly disconnect and reconnect the power
supply. The controller will resume normal operation after a delay of approximately 10
minutes.
•
Outputs Y1 … Y4 are not protected against accidental connection to AC 24 V.
This can damage the triacs.
•
For accurate measurement of the air volume, make sure that the tubes are
connected correctly.
Technical data
Power supply
Operating voltage
SELV / PELV AC 24 V ± 20 %
Rated voltage
AC 24 V
Frequency
50/60 Hz
Power consumption
Without field devices
With field devices
6 VA
Max. 33 VA
Caution
Internal fuse
Thermal, automatic reset
Supply cable protection (external fuse)
Transformer with secondary limitation
of
max. 10 A or
External secondary power fuse with
max. T 10 A non-renewable fuse or
max. C 13 A circuit breaker
is required in all cases
Inputs
Signal inputs for volt-free contacts
Quantity
Contact voltage
Contact current
Contact transfer resistance
Contact insulation resistance
Not suitable for pulse control
2 (D1, D2)
DC 33 V
DC 8 mA
Max. 100
Ω
Min. 50 k
Ω
Measured value input for temp. measurement
Quantity
Suitable temperature sensors
Measuring range
Sensor current
Resolution
Accuracy
1 (X1)
1)
LG-Ni 1000
–40 ... 110 °C
2.5 mA
≤
0.2 K
At 25 °C
±
0.2 K
1) X1 selected by option button in RXT10 tool LG-Ni 1000 / 0 ...10 V
Function test
Notes
STOP
Note!
