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CM2N3835en_01
07 Mar 2012
Desigo TRA
PL-Link IO Block
Use with PXC3 series room automation station
The PL-Link I/O block contains the inputs and outputs controlled by a
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room automation station via PL-Link.
PL-Link communications
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Valve control (3 potential-free relay contacts)
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Thermal valve actuator control (AC 24 V)
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Motor-driven valve and damper actuators
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(AC 24 V, 2- or 3-point)
Temperature input LG-Ni 1000
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2 digital inputs
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Operating voltage AC 230 V
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Pluggable screw terminals
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The RXM21.1 PL-Link I/O-Block allows control of a single fancoil unit by a PXC3
room automation station via the PL-Link peripheral bus. It is optimized for fancoil
installation and control in terms of housing, connection terminals and I/O mix. The
PL-Link (PeripheraL-Link) is a two-wire bus system optimized for communication
between peripheral devices (sensors, actors) and the modular PXC3 room
automation stations in the domains or HVAC, lighting and shading.
3
835
RXM21.1
Building Technologies
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Related Manuals for Siemens RXM21.1
Summary of Contents for Siemens RXM21.1
- Page 1 Pluggable screw terminals • The RXM21.1 PL-Link I/O-Block allows control of a single fancoil unit by a PXC3 room automation station via the PL-Link peripheral bus. It is optimized for fancoil installation and control in terms of housing, connection terminals and I/O mix. The...
- Page 2 The device is supplied without terminal covers. Terminal covers (RXZ20.1) can be ordered optionally. Equipment combinations • The PL-Link I/O-Block RXM21.1 only works together with PXC3 series room automation stations. • LG-Ni 1000 temperature sensors can be connected. • AC 24 V actors from Siemens or third party can be connected.
- Page 3 The service button is pressed using a tool. Remove the cable entry glands to connect cables to the room automation station. Remove terminal cover 3 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
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Page 4: Connection Terminals
Warning! Communication The PL-Link I/O-Block RXM21.1 contains the following interfaces: • PL-Link terminals. • RJ45 tool plug for FW upgrade (proprietary, a Siemens connection cable is required). • Only trained electrical installation staff may connect the tool plug (RJ45)! Warning! Adjacent terminal may be powered. - Page 5 • The device is in Backup mode cess value (power-on, missing PL-Link • After a timeout (2 x heartbeat time) the outputs go to Backup value communication 5 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 6 • Supply circuits are interrupted as soon as plug 19/21 is removed from the device. (Bridges 19-19 and 21-21 are located on the print, not the plug; see terminal diagram page 11). 6 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 7 Outputs Y1...Y4 are on AC 24 V, the triac closes against contact to G Output current Max. 0.5 A Total rated load Max. 9 VA (at simultaneous load on 2 outputs) Protection against overload No protection 7 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 8 0 ... 50 °C Humidity < 85% r.h. Transport Class 2K3 as per IEC 60721-3-2 Temperature – 25 ... 70 °C Humidity < 95% r.h. 8 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 9 SN 36350 (environmentally compatible assessments (RoHS compliance, products) materials composition, packaging, 2002/95/EC (RoHS) environmental benefit, disposal) Dimensions Refer to “Dimensions” Weight With/without packaging 0.640 kg / 0.675 kg 9 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 10 1 2 3 4 5 6 7 8 2 PL-Link – 6 RxD Proprietary socket, type RJ45 3 Unused 7 TxD 4 Unused 8 GND 10 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 11 • Fans on relay outputs Q14 ... Q34 may not be switched in parallel. Note STOP Use isolating relays or separate I/O blocks to run fans parallel. 11 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 12 Y1 of the UA1T) • The UA1T power amplifier requires its own AC 24 V supply! Notes • 3-point actuators cannot be connected to the UA1T. 12 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
- Page 13 Dimensions All dimensions in mm Without terminal covers 51,5 With terminal covers RXZ20.1 (to be ordered separately) 112,4 107,8 13 / 14 Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...
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Page 14: Drilling Diagram
Drilling diagram 1:1 43,2 86,3 14 / 14 2012 Siemens Switzerland Ltd Subject to change Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01 Building Technologies 07 Mar 2012...