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Siemens RWF50.3

Siemens RWF50.3
64 pages
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CC1U7866en
25.07.2014
Building Technologies Division
Infrastructure & Cities Sector
RWF50.2 and RWF50.3
Compact universal controllers
Optimized for temperature and pressure control in connection with
modulating or multistage burners and air conditioning systems
User Manual
The RWF50.2/RWF50.3 and this User Manual are intended for use by OEMs which integrate the controllers in their
products!
Caution!
All safety, warning and technical notes contained in the Data Sheet on the
RWF50… (N7866) also apply to this document!

Table of Contents

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Siemens RWF50.3 Specifications

General IconGeneral
BrandSiemens
ModelRWF50.3
CategoryController
LanguageEnglish

Summary

1 Introduction

1.1 General notes

Provides essential guidelines for safe and effective use of the controller.

1.2 Typographical conventions

Explains symbols and text formatting used in the manual for clarity.

1.3 Description

Introduces the controller's primary function and features in heating/cooling systems.

1.4 Block structure

Illustrates the controller's internal structure and connectivity of inputs/outputs.

2 Identification of product no.

2.1 Type field

Describes the information found on the controller's type field label.

2.2 Scope of delivery

Lists the items included with the controller upon purchase.

3 Installation

3.1 Installation site and climatic conditions

Specifies suitable locations and environmental conditions for controller installation.

3.2 Dimensions

Provides the physical dimensions of the controller and panel cutout requirements.

3.3 Side-by-side mounting

Details spacing requirements when mounting multiple controllers adjacently.

3.4 Mounting the controller in a panel cutout

Explains the procedure for fitting the controller into a control panel cutout.

3.5 Removing the controller from the panel cutout

Describes the correct steps for safely removing the controller from its mounting.

3.6 Cleaning the front

Provides instructions on how to clean the controller's front panel safely.

4 Electrical connections

4.1 Installation notes

Offers crucial safety and procedural notes for electrical connections.

4.2 Galvanic separation

Details test voltages and isolation between different electrical circuits.

4.3 Assignment of terminals

Shows the terminal assignments for outputs and connection diagrams.

5 Operating modes

5.1 Low-fire operation

Describes the low-fire operation mode and its thermostat function.

5.2 High-fire operation

Details the high-fire operation, including dynamic tests and burner control.

5.2.2 Modulating burner, analog output

Describes modulating burner control using an analog output.

5.2.3 2-stage burner, 3-position output

Explains 2-stage burner control with a 3-position output.

5.2.4 2-stage burner, analog output

Describes 2-stage burner control using an analog output.

5.3 Burner shutdown

Explains the automatic burner shutdown triggered by sensor failure.

5.4 Predefined setpoint

Details how to set and change the controller's setpoint using contacts.

5.5 Response threshold (q)

Defines the response threshold for switching to high-fire operation.

5.6 Cold start of plant

Describes the cold start function for faster control response.

5.7 Thermal shock protection (TSS)

Explains the thermal shock protection feature and its ramp function.

6 Operation

6.1 Meaning of display and buttons

Explains the controller's displays, buttons, and their functions.

6.2 Basic display

Describes the default display state showing actual value and setpoint.

6.3 User level

Explains how to access and change setpoints and view other values.

6.4 Manual control, modulating burner

Details how to manually control the modulating burner via relays or output.

6.5 Manual control, 2-stage burner

Explains manual control for 2-stage burners using relays or analog output.

6.6 Starting the self-setting function

Guides on initiating the automatic controller self-setting function.

6.7 Display of software version

Explains how to view the controller's software version and perform segment tests.

7 Parameterization PArA

8 Configuration ConF

8.1 Analog input InP1

Configures the analog input type, correction, scale, and temperature unit.

8.2 Controller Cntr

Sets controller type, operating action, setpoint limits, and self-optimization.

8.3 Thermal shock protection (TSS) rAFC

Configures thermal shock protection function, ramp slope, and limit values.

8.4 Control outputs OutP

Configures binary and analog outputs, including signal type and scaling.

8.5 Binary input bi nF

Defines the use of the binary input for setpoint changeover or mode selection.

8.6 Display di SP

Configures display settings, decimal points, and level locking.

9 Self-setting function

9.1 Self-setting function in high-fire operation

Details the self-setting process specific to high-fire operation.

9.2 Checking the controller parameters

Provides methods to check and verify controller parameter adjustments.

10 PC software ACS411

10.1 Safety notes

Highlights safety precautions when using the ACS411 software.

10.2 Setting the correct system parameters

Emphasizes the OEM's responsibility for correct system parameter settings.

10.3 Changing the parameters

Advises on checking parameters after changes made via software or unit.

10.4 Place of installation

Specifies that the software is for on-site use only, not remote control.

10.5 License and liability regulations

Refers to the end-user license agreement for the software.

10.6 Procurement of PC software ACS411

Instructs on how to order the ACS411 software and updates.

10.7 Languages

Mentions available languages for the ACS411 software.

10.8 Operating systems

Lists compatible operating systems for the ACS411 software.

10.9 Prerequisites for hardware

Specifies hardware requirements (disk memory, RAM) for ACS411.

10.10 Installation

Guides through the installation process of the PC software ACS411.

10.11 Others

Covers additional topics related to the software, like USB port usage.

10.11.1 Use of USB port

Explains the purpose and temporary use of the USB port for configuration.

10.11.2 Powering the controller via the USB port

Details powering the controller via the USB port and associated notes.

11 What to do if...

11.1 Alarm messages

Lists alarm messages, their causes, and recommended remedies.

11.2 Others

Addresses other operational issues, such as USB connection status.

12 Technical data

12.1 Inputs

Details technical data for resistance thermometers and input signals.

12.1.1 Resistance thermometers

Provides measuring ranges, accuracy, and ambient impact for thermometers.

12.1.2 Input signals

Lists specifications for voltage and current input signals.

12.1.3 Binary input D1

Details potential-free contact functions for binary input D1.

12.2 Monitoring the measuring circuit

Describes how the controller monitors circuits for errors like short-circuits.

12.3 Controller outputs OutP

Details specifications for relay and analog outputs.

12.4 Controller

Provides general information about the controller type and structure.

12.5 Electrical data

Lists power supply, electrical safety, and electromagnetic compatibility data.

12.6 Housing

Describes the housing material, color, dimensions, and protection ratings.

12.7 Environmental conditions

Specifies storage, transport, and operation conditions (climatic, temperature, humidity).

12.8 Segment display

Details the height, color, and range of the controller's segment display.

12.9 Standards and certificates

Lists relevant standards and certifications the controller complies with.

13 Key

14 List of figures

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