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CA2N3834en_09
2013-06-16
Desigo™ RXC
Room controllers
For fan-coil systems, chilled ceilings and radiators
with L
M
® compatible bus communications
ON
ARK
The RXC20, RXC21 and RXC22 room controllers are used for temperature control
in individual rooms.
For 2-pipe or 4-pipe fan-coil systems, with or without change-over
For chilled ceilings and radiators
Control of AC 24 V PDM
and damper actuators, or electric heating coils
Volt-free relay contacts for fan control and electric heating coils
PI or PID control (depending on application)
Downloadable application software
L
M
® compatible bus communications
ON
ARK
For use in the Desigo building automation and control system
AC 230 V operating voltage
1) PDM = pulse/duration modulated
RXC20.1 / RXC20.5
RXC21.1 / RXC21.5
RXC22.1 / RXC22.5
1)
thermic valve actuators, 3-position AC 24 V valve
3
Building Technologies
834
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Table of Contents
Related Manuals for Siemens Desigo RXC20.1
Summary of Contents for Siemens Desigo RXC20.1
- Page 1 Desigo™ RXC RXC20.1 / RXC20.5 Room controllers RXC21.1 / RXC21.5 RXC22.1 / RXC22.5 For fan-coil systems, chilled ceilings and radiators with L ® compatible bus communications The RXC20, RXC21 and RXC22 room controllers are used for temperature control in individual rooms. ...
- Page 2 3-position actuators RXC22.1 For two thermic valve actuators For 3-speed fan control RXC22.5 S55373-C113 or one 3-position actuator Internal relay for electric heating coil RXZ20.1 Accessories: Terminal covers 2/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 3 RXC20.5/00020 Pairs of terminal covers RXZ20.1 Compatibility The QAX… room units and the Siemens field devices can be used with the RXC20, RXC21 and RXC22 room controllers. For details, refer to the RX hardware overview, CA2N3804. Design The RXC20, RXC21 and RXC22 room controllers consist of a housing base, a housing cover and the printed circuit board with connection terminals.
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Page 4: Connection Terminals
Tool socket (RJ45) on the room controller or room unit, for: RXT10 commissioning and service tool (L ® bus) ORKS RXT20.1 service terminal (PPS2) 4/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16... -
Page 5: Engineering Notes
(valves and damper actuators) are supplied directly from the room controller. This means that a separate AC 24 V supply is not necessary for the RXC20, RXC21 and RXC22 room controllers and the associated field devices. 5/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies... -
Page 6: Mounting Instructions
The housing base is fitted with raised supports. 7.5 (can be released with a screwdriver). Screws: Max. diameter 3.5 mm, min. length 38 mm Note! STOP Tightening torque for fixing screws max. 1.5 Nm 6/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16... -
Page 7: Commissioning Notes
(the jumpers 19-19 and 21-21 are on the PCB, not in the block, see terminal diagrams on pages 10 … 12). 7/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies... - Page 8 ® bus Interface type ® compatible, ORKS electrically isolated Transceiver on RXC2X.1: FTT-10A, on RXC2X.5: FT 5000 Baud rate 78 kbps Bus topology, bus termination see installation guide, CA110334 8/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 9 The product environmental declaration ISO 14001 (Environment) CA2E3834 contains data on RoHS compliance, ISO 9001 (Quality) materials composition, packaging, environmental benefit, disposal Dimensions See dimension diagrams Weight Excluding packaging 0.59 kg 9/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 10 ® devices. ORKS ®, Data A (CLA) Unoccupied ORKS 1 2 3 4 5 6 7 8 ®, Data B (CLB) unoccupied ORKS Unoccupied PPS2 (CP+) Unoccupied PPS2 (CP–) 10/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 11 ® devices. ORKS ®, Data A (CLA) Unoccupied 1 2 3 4 5 6 7 8 ORKS ®, Data B (CLB) unoccupied ORKS Unoccupied PPS2 (CP+) Unoccupied PPS2 (CP–) 11/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 12 ® devices. ORKS ®, Data A (CLA) Unoccupied ORKS 1 2 3 4 5 6 7 8 ®, Data B (CLB) unoccupied ORKS Unoccupied PPS2 (CP+) Unoccupied PPS2 (CP–) 12/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
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Page 13: Connection Diagrams
For information on the compatibility of the various field devices with the RXC20, RXC21 and RXC22 room controller, refer to the various application descriptions. See Applications library, document V1: CA2A3810, V2: CA110300). 13/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies... - Page 14 AC 24 V thermic valve actuator (max. 2 STP72E / STP72E actuators per Y1 output on the UA1T) The UA1T requires an AC 24 V supply voltage Notes The UA1T is not suitable for the connection of 3-position actuators. 14/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 15 Dimensions (all Dimensions in mm) Without terminal covers 51,5 With terminal covers 112,4 107,8 70211 Drilling diagram 43,2 86,3 15/16 Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...
- Page 16 16/16 2000 - 2013 Siemens Switzerland Ltd. Subject to change Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_09 Building Technologies 2013-06-16...