Siemens RXM21.1 Bedienungsanleitung

CM2N3835en_01

07 Mar 2012 Building Technologies

3835

3835P01

Desigo TRA

PL-Link IO Block RXM21.1

Use with PXC3 series room automation station

•The PL-Link I/O block contains the inputs and outputs controlled by a

room automation station via PL-Link.

•PL-Link communications

•Valve control (3 potential-free relay contacts)

•Thermal valve actuator control (AC 24 V)

•Motor-driven valve and damper actuators

(AC 24 V, 2- or 3-point)

•Temperature input LG-Ni 1000

•2 digital inputs

•Operating voltage AC 230 V

•Pluggable screw terminals

Use

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.

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Functions

The application on the room automation station determines the device functionality.

Type overview and ordering

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.

•Signaling inputs relay outputs etc. see pages 10, 11.

Technical design

The PL-Link I/O-Block RXM21.1 consists of a terminal base, upper section of

housing, and circuit board with plug-in connection terminals on the side. In addition,

the device offers a tool socket, a service LED and button.

Plug-in connection

terminals

Upper housing section

Plug-in connection

terminals

3835Z01

Lugs for cable strain relief

Plug-in connection terminal

for PL-Link bus

Housing base

Service LED

Service button

Tool socket

The Service LED (3-color) indicates the device's operating status as follows:

Continuously OFF •No power supply

•Nothing to indicate.

Flashing 1 (1/4 s On, 7/4 s Off) •Feedback for medium button pressure

(yellow)

•Feedback during process (yellow)

Flashing 2 (1s On, 1 s Off) No device detection (red)

Continuously ON •Programming mode (red)

•Success (green)

Product number Stock number Name

RXM21.1 S55376-C104 PL-Link IO Block

Note

Service LED

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Building Technologies 07 Mar 2012

The device carries out the following commands from the service button:

Button pressure Action

Short (< 0.5 s) •Switch on/off programming mode

•Do not indicate connection test result

(0.5...2.s) •No action

Medium

(2...20 s)

•Start connection test

Long (> 20 s) •Start reset to factory settings

Operation and display interaction:

Short Medium Long

Indication time *)

Button pressure

Indication / success

Failure

Status Programming mode Connection test Reset

Result Factory settings

*) Indication time = 60 s; can be ended by briefly pressing the button.

Warning!

Only trained electrical installation staff may press the service button when the

terminal cover is removed!

Adjacent terminal may be powered.

The device is supplied without terminal covers protecting the connection terminals

against touch and soiling. The service LED is visible also with installed terminal

cover. The service button is pressed using a tool. Remove the cable entry glands

to connect cables to the room automation station.

3873J02

Remove terminal cover

Service button

HMI concept

Terminal cover

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Building Technologies 07 Mar 2012

ID-number

(Unique serial number)

Barcode for ID, Code 128

Protective category

Temperature range

(0 ... 50 °C)

Test date, series

(Z, A, B, C ...)

Serial number

Observe notes in this document

All connection terminals are plug-in terminals. The terminals are separated to

prevent faulty wiring for terminals connected to AC 230 V (supply, relay outputs).

STOP Note

Warning!

Cable strain relief for lines for terminals 19 ... 28

(AC230 V) is mandatory. Attach the lines to the

related lugs on the housing base using cable

blinders (see picture, right).

Plug-in terminals connected to power must be

removed from power prior to plug-in or plug-out!

3873J04

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).

Warning! •Only trained electrical installation staff may connect the tool plug (RJ45)!

Adjacent terminal may be powered.

•Do not connect Ethernet to the RJ45 plug! The device at the other end might be

destroyed!

Disposal

"The device is considered electronics device for disposal in terms of European

Directive 2002/96/EG (WEEE) and may not be disposed of as domestic garbage.

The device must be disposed of via the proper channels.

Follow all local and currently applicable laws and regulations.

Label

Connection terminals

Communication

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Building Technologies 07 Mar 2012

Engineering notes

Installation manual TRA, CM111043, contains all information required to engineer

the PL-Link bus (topology, repeater, etc.)

•The PL-Link I/O-Block is operated on AC 230 V power. The device directly

supplies power to actuators (valves, dampers). As a result, no separate AC 24 V

supply is required for the field devices.

•The sizing and fusing of the power lines are oriented to overall load and local

regulations.

•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).

•The power lines must be fused on the device with strain relief.

•The potential-free relay outputs allow for switching loads up to AC 250 V, 5 A

(4 A).

•The sizing and fusing of the power lines are oriented to overall connected load

and local regulations. The switching circuits must be externally fused (≤10 A);

no internal fusing.

•The cables must be attached to the device with strain relief.

STOP Caution! •Do not connect fans in parallel.

Outputs Y1 ... Y4 may not exceed 9 VA simultaneous load.

Y1, Y2 (heating) 3-position valve actuator 4.5 VA

Y3, Y4 (cooling) 3-position valve actuator 4.5 VA

Max. load for heating and cooling sequence is 9 VA each.

This is allowed because both sequences are not active simultaneously.

STOP Note With small loads (< 2 VA), tolerance may be > +20% (see technical data).

Application Thermal

actuators

Motorized

actuators

Elktromechanical

actuators.

Outout 1 Y1 Y1

Outout 2 Y3 Y3

•The outputs are inactive

•The device is in Backup mode

•After a timeout (2 x heartbeat time) the outputs go to Backup value

Power lines

AC 230 V

Potential-free

relay outputs

AC 230 V

Triac outputs AC 24 V

Max. load

Example:

Assignment of outputs

Behavior without a pro-

cess value (power-on,

missing PL-Link

communication

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Building Technologies 07 Mar 2012

Mounting notes

The PL-Link I/O-Block can be mounted in any position using the following

attachment methods:

3873J06

3873J07

Mounting on tophat rail

The housing base contains a snap-on

option to mount on tophat DIN rails, type

EN50022-35x7,5 (snap off using

screwdriver)

Direct mounting

Two predrilled holes to mount using screws

(drilling diagram, see "Dimensions").

The housing base has higher support surfaces.

Screws: Max. dia. 3.5 mm, length min. 38 mm

STOP Note

Tightening torque for fastening screws: Max. 1.5 Nm

Observe the following for mounting:

•Heat generated during operation must be removed; make sure the air circulates

sufficiently around the device.

•Easy access for service.

•Comply with local installation regulations!

The mounting instructions including drilling template is printed on the device

packing.

Commissioning notes

Outputs are inactive (relay off, triac off) when an application does not use an output.

The outputs can be controlled and the inputs queried as part of a special test mode

(SSA tool).

3-position actuators: No synchronization is executed when the sense of rotation is

changed.

STOP

Caution!

•The thermal fuse in the transformer may be triggered in case of extended

overload (ca. 4 minutes) or short circuits.

The device must then be replaced.

•The AC 24 V side does not have protection against faulty wiring on AC 230 V.

•AC 230 V mains power for supply and relay must be switched off prior to

plugging in and removing plug-in terminals (risk of electric shock!)

•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).

Secure state

Functional test

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Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01

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Operating notes

•When power is off, all outputs are inactive

•When PL-Link communications fails, all outputs go to the configured backup

values (after 2 x Heartbeat time).

Technical data

Power Rated voltage AC 230 V

Frequency 50 / 60 Hz

Power consumption incl. connected field

devices

Max. 12 VA

Internal fuse Thermal, irreversible

Protection Protection against faulty wiring on AC 230 V No protection for On / outputs

Inputs

Status inputs (D1, D2) Quantity 2

(for potential-free contacts) Contact voltage. DC 16 V

Contact current DC 5 mA

Contact transfer resistance Max. 100 Ohm

Contact insulation resistance Min. 50 kOhm

Switching time: Min. 20 ms “ON”, min. 20 ms “OFF”

Heartbeat 1 s

Protection against faulty wiring on AC 24 V Protected

Measured value input B1 Connectable temperature sensor LG-Ni 1000

Quantity 1

Measuring range 0...50 °C

Sensor current 0.5 mA

Resolution 0. 1 K

Measuring error at 25 °C sensor temp.

(without line resistance)

Max. 0.5 K

Heartbeat 10 s

Protection against faulty wiring on AC 24 V Protected

Outputs

Triac outputs AC 24 V Quantity 4 (Y1 ... Y4)

Output voltage AC 24 V +/- 20%

(at <2 VA load: possibly >+20%!)

Outputs Y1...Y4 are on AC 24 V, the triac closes against contact to G

Output current Max. 0.5 A

Total rated load

(at simultaneous load on 2 outputs)

Max. 9 VA

Protection against overload No protection

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Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01

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Relay outputs Quantity 3 (Q14, Q24, Q34)

Relay type Monostable, NO contact

Contact rating at alternating current

Switching voltage Max. AC 250 V, min. AC 19 V

Rated current resistive / inductive Max. AC 5 A / 4 A (cosϕ= 0.6)

Switch-on current (200 ms half-time) Max. 20 A

Switching current at AC 19 V Min. AC 10 mA

Contact rating at direct current

Switching voltage Max. DC 250 V, min. DC 5 V

Switching current at DC 5 V Min. DC 100 mA

Switching output Max. 20 W

Inductive load L/R Max. 7 ms

Locking (in firmware) •Only 1 relay active at a time

•All relays 1 s OFF upon change of

stage

PL-Link bus Interface type Galvanically isolated

Transceiver TP-UART

Bus power 5 mA

Baud rate 9.6 kbps

Protection against faulty wiring AC 24 V Proteced

Bus topology: See installation guide TRA, CM111043

Line connections Connection terminals for signals and power

supply (plug-in screw terminals)

Solid or stranded

0,25 ... 2.5 mm2 or 2 x 1.5 mm2

Connection terminals for PL-Link bus (plug-

in screw terminals)

Solid or stranded wire 2 x max 1.0

mm2

e.g. YCYM 2x2x0.8

Cable length See TRA installation manual,

CM111043

Tool connection cable Max. 3 m

Degree of protection of

housing

Protection as per EN 60529 IP30 with terminal cover and wall

mounting without tophat rail

IP20 for all other mounting types

Protection class Suited for use in Protection class I – or Protection class II - Plants

Environmental conditions Operation Class 3K5 as per IEC 60721-3-3

Temperature 0 ... 50 °C

Humidity < 85% r.h.

Transport Class 2K3 as per IEC 60721-3-2

Temperature – 25 ... 70 °C

Humidity < 95% r.h.

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Standards and directives Product safety

Automatic electronic controllers for

household use and similar applications

EN 60730-1

Electromagnetic compatibility

Immunity (industry & residential) EN 60730-1

Emissions (residential) EN 60730-1

CE compliance

Electromagnetic compatibility as per

directive

2004/108/EC

Low voltage directive 2006/95/EC

UL approbation UL916

C-tick conformity (EMC) AS/NZS 61000-6-3

Environmental compatibility The product environmental declaration

CA2E3871 contains data on environ-

mentally compatible product design and

assessments (RoHS compliance,

materials composition, packaging,

environmental benefit, disposal)

ISO 14001 (environment)

ISO 9001 (quality)

SN 36350 (environmentally compatible

products)

2002/95/EC (RoHS)

Dimensions Refer to “Dimensions”

Weight With/without packaging 0.640 kg / 0.675 kg

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Siemens RXM21.1 - PL-Link IO Block CM2N3835en_01

Building Technologies 07 Mar 2012

Connection terminals

3835A01

123456789101112 1718

GND

PL-Link

25 26 27 28

Q13

Q14

AC 230V

Q24

Q34

AC 230V 5(4)A

19 19 21

–

N.C.

Measured value input B1 1 Measured value input for LG-Ni 1000 sensor

M 2 Ground for measured value input

Status inputs D1 4 Status input

GND 5

Ground for status inputs

D2 6 Status input

Triac outputs Y1 7 Switching output AC 24 V, 0.5 A

G 8 Actuator supply AC 24 V

Y2 9 Switching output AC 24 V, 0.5 A

Y3 10 Switching output AC 24 V, 0.5 A

G 11 Actuator supply AC 24 V

Y4 12 Switching output AC 24 V, 0.5 A

PL-Link + 17

Data line +

– 18 Data line –

Power N

19 Neutral conductor

L 21 Phase conductor AC 230 V +/- 10%

Relay outputs Q13 25 Common supply for Q14, Q24 and Q34

Q14 26 NO contact AC max. 250 V, 5 (4) A (stage 1)

Q24 27 NO contact AC max. 250 V, 5 (4) A (stage 2)

Q34 28 NO contact AC max. 250 V, 5 (4) A (stage 3)

M and GND are galvanically connected

•Note the technical data for the relay outputs: AC max. 250 V, 5 (4) A

•Comply with local installation regulations!

3206Z01

2345678

1 PL-Link +

2 PL-Link –

3 Unused

4 Unused

5 +12VDC

6 RxD

7 TxD

8 GND

Note

Caution!

Tool connection socket

Proprietary socket,

type RJ45

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