Siemens RWD62 Bedienungsanleitung

CE2N3342en

2017-12-05 Building Technologies

342

RWD62

Universal Controller RWD62

For comfort control in HVAC&R-Systems

·Standalone electronic universal controller with P or PI response

·Operating voltage in accordance to type AC 24 V

·Control application selectable via Application Number

·Active input scale can be selectable

·Limit and direction of the output scale is able to be freely assigned

·Two universal inputs for Ni 1000, Pt 1000 temperature sensors and

DC 0…10 V signals

·Unit can be set as °C, °F, % or no specified unit

·Two modulating outputs with DC 0…10 V signal outputs, direct or reverse

action

·One digital input for day/ night changeover

·Entering or changing of all data via operating buttons on the controller, possi-

ble without additional tools

·PC connection for downloading canned applications via the software tool

Use

The universal controllers are intended for Heating, Ventilating, Air-Conditioning and

Refrigeration in comfort control plants. It can be mounted in a control panel or in the

ARG62.21/ARG62.22 housing on ducts, walls and in plant rooms.

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HVAC&R Application

Measurement and control of temperature, relative humidity, absolute humidity, en-

thalpy, pressure differential, volumetric airflow and indoor air quality. The input scale

can be set from –100 units to 8,000 units. The start and end points of output voltage

can be any value between DC 0 V to DC 10 V.

Functions Summary

·Controller

Stand-alone controller with two DC 0…10 V outputs with independent adjustment on

each sequence for direct acting and/ or reverse acting. Adjustable parameters includ-

ing proportional band and integral action time.

·Auxiliary selectable function

Universal input X2 for one of the following functions:

-PI limiter function (absolute and relative)

-Remote setpoint function

-Cascade control function

-Setpoint compensation

-Winter/summer operation

-Maximum priority

·Digital input D1 for setpoint changeover day/ night

Type summary

Inputs Outputs Type Reference

Universal Digital Analog Digital

2120RWD62

Name Type

Protective small enclosure for wall mounting ARG62.21

Protective big enclosure for wall mounting ARG62.22

Software Tool S3341A031EN0

Equipment combinations

The following Siemens units can be connected to RWD62 universal controller.

Units Data sheet no.

Sensor with LG-Ni 1000 temperature sensing element 17… to 19…

Sensor with Pt 1000 temperature sensing element 1846

Sensor with DC 0…10 V measuring signal 17… to 19…

Room temperature sensor with setpoint adjuster QAA25

or QAA25/AP

1721 / 1748

Remote setpoint adjusters FZA21.11 and FZA61.11 19…

Air damper actuators with DC 0…10 V input 46…

Valve actuators with DC 0…10 V input 45…

Control valves 46…

Signal converter SEM 61.4 for current valve control 51…

Various signal converters 34…

Accessories

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Other combinations with third-party units are possible, provided the input and output

specifications match the RWD62.

A software tool for controller application selection and parameter adjustment is avail-

able. It is a user-friendly Windows® 95 (or above) based software tool which provides

you a printout of the controller settings.

Functions

The RWD62 is a stand-alone universal controller, which performs both primary and

auxiliary control functions. The respective mode is defined by entering the correspond-

ing configuration and setting parameters via the push buttons on the controller or the

software tool.

The RWD62 controller can be programmed as follows:

One sequence: Y1 or Y2 reverse or direct acting

Two sequence: Y1 and Y2 reverse and direct acting or

Y1 and Y2 reverse and reverse acting or

Y1 and Y2 direct and direct acting

Output

Voltage

Setpoint

Load

3342d01

3342d02

Output

Voltage

Load

Setpoint

Reverse acting sequence

(application no.: 10…19)

2 Reverse acting sequences

(application no.: 20…29)

Setpoint Load

3342d03

Output

Voltage

Setpoint

Load

3342d04

Output

Voltage

Reverse and direct acting sequences

(application no.: 30…39)

Direct acting sequence

(application no.: 40…49)

3342d05

Output

Voltage

Setpoint Load

2 Direct acting sequences

(application no.: 50…59)

Software Tool

Controller type

Main functions

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The universal input X1 is used as the primary input for a LG- Ni 1000 temperature sen-

sor, a Pt 1000 temperature sensor or a DC 0…10 V active input.

The universal input X2 is used as the secondary input for a LG-Ni 1000 temperature

sensor, a Pt 1000 temperature sensor, an active/passive remote setpoint transmitter or

a DC 0…10 V active input.

The digital input D1 is used to select the day or night changeover. Changeover occurs

via potential-free contacts between D1 and M.

Each output Y (Y1, Y2) can be configured for either reverse or direct acting. The modu-

lating voltage output (Y…) controls the devices requiring a DC 0…10 V signal.

Ventilating plant with temperature control

X1 Room temperature

Y1 Heating, reverse action

Y2 Cooling, direct action

Y2Y1

Temp.

RWD62

3342s01

One of the following auxiliary functions can be selected:

·PI limiter function (absolute and relative)

·Remote setpoint function

·Cascade control function

·Setpoint compensation

·Winter/summer operation

·Maximum priority

Additionally, the day and night operation mode is available.

The limiter function with PI control enables absolute

(or relative) maximum or minimum limitation of the

supply air temperature (X2).

When the value drops below or exceeds the limiter

setpoint, the limiter function controls and takes priority

over the main setpoint.

Y2Y1

Temp.

RWD62

YX2

3342s02

A remote setpoint transmitter (FZA21.11, QAA25 or

QAA25/AP), connected to X2 and configured accord-

ingly, enables setpoint adjustment.

Active measurement from 0…10 V DC corresponding

adjustable range from –100 to 8000

Passive measurement from 0…1000 Wcorresponding

adjustable range from –100 to 8000

Y2Y1

Temp.

RWD62

3342s03

Universal input X1

Universal input X2

Digital input D1

Analog outputs

Example

Auxiliary functions

PI limiter function

Remote setpoint

Cascade control

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X2 Supply air temperature sensor

You can select the PI/PI room/supply air

temperature cascade control. In this case, the

virtual PI room temperature controller determines

the setpoint within the limiter setpoints for the PI

supply air temperature controller.

X1Y2Y1

Temp.

RWD62

YX2

3342s04

Maximum priority, cooling

If the value (0…10 V) of the input X2 is greater than

the calculated output of the cooling sequence, the

output will use the X2 input value as output value.

This is active even when the controller is working

with the heating sequence.

X2Y2Y1

Temp.

RWD62

3342s05

The temperature setpoint X1 is shifted by the tem-

perature as measured at sensor X2.

Configuration of the RWD62 defines the influence

on setpoint X1.

The example shows the room air temperature

setpoint as controlled by the outside temperature.

3342s06

Temp.

RWD62

A digital switch or analogue input between termi-

nals X2 and M can be used to implement win-

ter/summer changeover.

Digital changeover

When the contact is closed, summer operation is

selected. Reverse acting output (Y1 only) is set

to direct action (cooling).

Analog changeover

When the X2 input exceeds the setpoint, sum-

mer operation is selected. Reverse acting output

(Y1 only) is set to direct action (cooling).

Y2Y1

Temp.

RWD62

3342s07

A contact between terminals D1 and M can be

used to implement setpoint changeover for

day/ night operation.

When the contact is open, the setpoints for day

operation are selected.

When the contact is closed, the setpoints for night

operation are selected.

During the night mode, the following auxiliary func-

tions are disabled: remote setpoint, abso-

lute/relative limiter, setpoint compensation and

maximum priority.

Y2Y1

Temp.

RWD62

3342s08

Maximum priority

Setpoint compensation

Winter/ summer

operation

Day/ night setpoint

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Mechanical design

The RWD62 universal controller is as per DIN 43 880 Gr. 1 requirements.

A protective housing is used to protect the controller when mounted outside a control

panel, such as on ducts, walls and in plant rooms. Furthermore, the protective housing

prevents inadvertent contact with voltage supplying parts such as the connecting termi-

nals.

The RWD62 clips into the protective housing.

The cable entries are located at the top and the bottom of the protective housing.

The front has an opening for the LCD display and the programming buttons.

The RWD62 universal controller can be mounted as follows:

·In a standard electrical control cabinet as per DIN 43 880

·Wall mounted in a protective housing

·Front mounting with standard available installation elements

Plug-in screw terminals

The RWD62 is operated by the buttons on the controller front. Additional tools are not

necessary. A 9-pin port is provided for optional programming via the software tool.

3342z01

The LCD shows the following information for normal operation:

·Current operating values (maximum 4 digits)

·Current setpoints (day/night)

·Application number

·Output voltage value

·Control sequencing diagram

·Auxiliary input value

·Selected auxiliary function

The controller has three operating buttons for the following functions:

The SELECT button is used to enter or save the value adjustment.

The operating buttons are used for viewing and adjusting parameters.

To configure the controller, follow the instructions supplied with the controller.

Engineering notes

Use this controller only for applications as described in the description on the title page

(bold print) and the section "Use". Additionally, observe all conditions and restrictions

imposed in this section and in "Technical data".

Housing

Protective housing

ARG62.21/ARG62.22

Mounting options

Terminals

Operating and display

elements

LCD

Operating buttons

SELECT

Configuration

Intended use

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The sections marked with a warning symbol contain technical safety requirements and

restrictions. Observe all of these warnings as they directly relate to the protection of

person and equipment.

Installation notes

Observe all local installation and mounting regulations.

The RWD62 controllers can be mounted as follows:

A On a top hat rail (EN60715, 35 × 7.5) at least 120 mm long

B Wall mounted with 2 screws

C Front mounted using standard elements, e.g.

1 × top hat rail 150 mm long

2 × hexagonal placeholders 50 mm

washers and screws

D In the ARG62.21/ARG62.22 protective housing

Standard cables can be used for the controller. However, when mounting in an envi-

ronment greatly exposed to EMI, use only shielded cables.

The RWD62 is designed for AC 24 V operating voltage.

The low voltage must comply with the requirements for safety extra-low voltage (SELV)

as per EN 60730.

Use safety insulating transformers with double insulation as per EN 60742; they must

be designed for 100 % on-time.

When using several transformers in one system, the connection terminals G0 must be

galvanically connected.

Supplying voltages above AC 24 V to low voltage connections may damage or destroy

the controller or any other connected devices. Additionally, connections to voltages

exceeding AC 42 V endanger personal safety.

Commissioning notes

A booklet is supplied with the RWD62 controller for commissioning.

Observe the following:

·The controller must be configured for plant-specific operation using standard applica-

tion number

·Plant specific fine tuning can be performed if required (refer to the commissioning

booklet)

·Power supply to the controller and the connected devices must be guaranteed

·Values and settings entered remain available even on power failure

Electrical installation

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Disposal

Technical data

Operating voltage

Safety extra-low voltage (SELV) as per

Frequency

AC 24 V ±20 %

EN 60730

50 Hz/60 Hz

RWD62 2.5 VA

Actual and nominal values 4 digits

LG-Ni 1000

Pt 1000

Active sensor

0.5 °C

Depends on the setting range

Transport

Climatic conditions

Temperature

Humidity

Mechanical conditions

IEC721-3-2

Class 2K3

-25…+70 °C

<95 % r.h.

Class 2M2

Operation

Climatic conditions

Temperature

Humidity

IEC721-3-3

Class 3K5

0…+50 °C

<95 % r.h.

Housing

Front and with ARG62.21

Front and with ARG62.22

IP 20 as per EN 60529

IP 30 as per EN 60529

EU Conformity (CE)

RCM Conformity

CE2T3341xx *)

CE2T3341en_c1 *)

The product environmental declaration CE1E3343en *) contains data on environmentally

compatible product design and assessments (RoHS compliance, materials composition,

packaging, environmental benefit, disposal).

Screw terminals for cables with min. 0.5 mm dia.

max. 2 x 1.5 mm2or 2.5 mm2

RWD62 0.277 kg

*) The documents can be downloaded from http://siemens.com/bt/download.

The device is considered electrical and electronic equipment for dis-

posal in terms of the applicable European Directive and may not be

disposed of as domestic garbage.

·Dispose of the device through channels provided for this purpose.

·Comply with all local and currently applicable laws and regula-

tions.

General data

Power supply

Power consumption

LCD

Display resolution for (these

values do not relate to the

controller accuracy)

Environmental

conditions

Environmental

conditions

IP code

Norms and standards

Terminals

Weight without packag-

ing

Environmental compati-

bility

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Controller measuring range

Max. cable length for dia. 0.6 mm

-50…+150 °C

max. 300 m

Controller measuring range

Max. cable length for dia. 0.6 mm

-20…+180 °C

max. 300 m

Range

Max. cable length for dia. 0.6 mm

DC 0…10 V corresponding to adjustable

range from –100 to 8000 (°C, °F, % or

no unit)

max. 300 m

Range

Max. cable length for dia. 0.6 mm

0…1000 Wcorresponding to adjustable

range from –100 to 8000 (°C, °F, % or

no unit)

max. 300 m

Polling voltage for control commands (D…M)

Current consumption

DC 15 V

<15 mA

Range

Maximum current

DC 0…10 V

±1 mA

Internal diagram

RWD62

D1M X1M X2 M

MY1 M

Tool

3342g01

D1 Digital input

G, G0 AC 24 V supply

( SELV AC 24 V power supply)

MGround (G0) for signal inputs, universal inputs and analog outputs

X1 Signal input (main input: LS Ni 1000, Pt 1000 and 0…10 V DC)

X2 Signal input (aux. input: LS Ni 1000, Pt 1000, 0 …10 V DC and 0…1000 Wor

0…10 V DC remote setpoint)

Y1, Y2 Analog outputs

Tool Communication port for PC (9-pin plug)

Connection diagram

Analog inputs X1, X2

LG-Ni 1000 Wat 0 °C

Pt 1000 Wat 0 °C

Analog voltages

(for measured variables

in °C, % or without unit)

Remote setpoints X2

Digital input D1

Analog outputs Y1, Y2

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N1 RW D62 controller

PC Personal computer

S1 Time clock or switch

X1 Main input (Termination G appears when X1 is an active sensor)

X2 Auxiliary input or remote setpoint (Termination G appears when X2 is an active sensor)

Y1, Y2 Valve actuator 1 and 2 / damper actuator 1 and 2

Please note that if you use a DESKTOP computer, the TOOL signal ground is gal-

vanically connected to G0 inside the controller. If the signal line of the computer is

grounded to Earth, the G0 line after TOOL connection will be Earthed as well.

This will change from SELV to a PELV.

Dimensions

ARG62.21 = 150

61.5

48.5

ARG62.22 = 345

Published by:

Siemens Switzerland Ltd.

Building Technologies Division

International Headquarters

Gubelstrasse 22

6301 Zug

Switzerland

Tel. +41 58-724 24 24

www.siemens.com/buildingtechnologies

Delivery and technical specifications subject to change

Note

RWD62

ARG62.21 / ARG62.22

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