RWF55.5 and RWF55.6 Compact universal …

1 CC1U7867en Building Technologies DivisionInfrastructure & Cities Sector and Compact universal controllers Optimized for temperature and pressure control in connection with modulating or multistage burners and air conditioning systems User Manual The 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 rwf55 (N7867) also apply to this document! 2/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 3/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector Supplementary documentation Data Sheet rwf55 .. N7867 Environmental Declaration rwf55 .. E7867 4/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 5/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector Contents Contents 1 Introduction.

2 8 General notes .. 8 Typographical conventions .. 9 Safety notes .. 9 Warning symbols .. 9 Notification symbols .. 10 Presentation .. 10 Description .. 11 Block structure .. 12 2 Identification of product no.. 13 Type field .. 13 Scope of delivery .. 13 3 Installation .. 14 Installation site and climatic conditions .. 14 Dimensions .. 14 Side-by-side mounting .. 15 Mounting the controller in a panel cutout .. 15 Removing the controller from the panel cutout .. 16 Cleaning the front .. 16 4 Electrical connections .. 17 Installation notes .. 17 Galvanic separation .. 18 Assignment of terminals .. 19 5 Operating modes .. 22 Low-fire operation .. 22 High-fire operation .. 23 Modulating burner, 3-position output .. 23 Modulating burner, analog output .. 24 2-stage burner, 3-position output.

3 25 2-stage burner, analog output .. 26 Burner shutdown .. 27 Predefined setpoint .. 28 Setpoint changeover SP1 / SP2 or setpoint shift analog via InP2 .. 29 Setpoint changeover SP1 / external setpoint via InP2 .. 30 Setpoint shifting SP1 analog via InP2 / binary via dSP .. 31 External setpoint, setpoint shifting binary via dSP .. 32 Weather-compensated setpoint shifting .. 33 6/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector Response threshold (q) .. 34 Cold start of plant .. 35 Thermal shock protection (TSS) .. 37 6 Operation .. 38 Meaning of display and buttons .. 38 Basic display .. 40 User level .. 41 Manual control, modulating burner .. 42 Manual control, 2-stage burner .. 43 Starting the self-setting function.

4 44 Display of software version .. 45 7 Parameterization PArA .. 46 8 Configuration ConF .. 49 Analog input InP1 .. 50 Analog input InP2 .. 52 Analog input InP3 .. 53 controller Cntr .. 54 Thermal shock protection (TSS) rAFC .. 55 Alarm function 56 Control outputs OutP .. 58 Binary input binF .. 59 Display diSP .. 60 Interface IntF .. 61 9 Self-setting function .. 62 Self-setting function in high-fire operation .. 62 Checking the controller parameters .. 64 10 PC software ACS411 .. 65 Safety notes .. 65 Setting the correct system parameters .. 65 Changing the parameters or the plant s configuration .. 65 Place of installation .. 66 License and liability regulations .. 66 IMPORTANT PLEASE READ CAREFULLY! .. 66 Procurement of PC software ACS411 .. 66 Languages.

5 66 Operating systems : Operating .. 66 Prerequisites for hardware .. 66 Installation .. 67 Others .. 67 7/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector Contents Use of USB port : Use of .. 67 Powering the controller via the USB port : Powering the controller via the port .. 67 11 Modbus interface .. 68 User level .. 68 Parameter level .. 69 Configuration level .. 70 Remote operation .. 70 Device data .. 71 Device state .. 71 12 Profibus-DP interface .. 72 RS-485 Technology transfer .. 72 Wiring .. 77 Parameter list .. 77 13 What to do if .. 78 Alarm messages: .. 78 Others .. 78 14 Technical data .. 79 Inputs .. 79 Analog input InP1 (actual value) .. 79 Analog input InP2 (external setpoint, setpoint shifting).

6 81 Analog input InP3 (outside temperature) .. 81 Binary input D1 .. 81 Binary input D2 .. 82 Monitoring the measuring circuit .. 83 controller outputs OutP .. 84 controller .. 85 Electrical data .. 85 Housing .. 85 Environmental conditions .. 86 Segment display .. 86 Standards and certificates .. 87 15 Key .. 88 16 List of figures .. 90 8/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 1 Introduction 1 Introduction General notes Please read this User Manual before switching on the controller . Keep the User Manual in a safe place which can be accessed by all users at all times. Version! This User Manual describes all necessary settings (applicable to controller software version ). Reference! See chapter Display of software version.

7 9/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 1 Introduction Typographical conventions Safety notes This User Manual contains information which must be observed to ensure your own personal safety and to prevent damage to equipment and property. The instructions and notes are highlighted by warning triangles, a hand or arrow symbol and are presented as follows, depending on the hazard level: Only qualified personnel are allowed to install and operate the equipment. Qualified personnel in the context of the safety-related notes contained in this document are persons who are authorized to commission, ground and tag devices, systems and electrical circuits in compliance with established safety practices and standards. Note the following: The controller may only be used on the applications described in the technical documentation and only in connection with devices or components from other suppliers that have been approved or recommended by Siemens.

8 The product can only function correctly and safely if shipped, stored, set up and installed correctly, and operated and maintained as specified. Warning symbols The symbols for Caution and Attention are used in this User Manual under the following conditions: Caution This symbol is used where there may be a danger to personnel if the instructions are disregarded or not strictly observed! Attention This symbol is used where damage to equipment or data can occur if the instructions are disregarded or not strictly observed! Attention This symbol is used if precautionary measures must be taken when handling electrostatically sensitive components. Qualified personnel Correct use 10/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 1 Introduction Notification symbols Note This symbol is used to draw your special attention to a remark.

9 Reference This symbol refers to additional information in other documents, chapters or sections. abc Footnote Footnotes are comments, referring to specific parts of the text. They consist of 2 parts: 1) Markings in the text are arranged as continuous superscript numbers 2) Footnote text is placed at the bottom of the page and starts with a number and a period * Action An asterisk indicates that a required action is described. The individual steps are indicated by asterisks, for example: * Press Presentation Buttons Buttons are shown in a circle. Either symbols or text are possible. If a button has multiple assignments, the text shown is always the text corresponding to the function currently used. + Button combinations Two buttons shown in combination with a plus sign means that they must be pressed simultaneously.

10 ConF InP InP1 Command chain Arrows between words serve for finding parameters at the configuration level more easily or for navigating in the ACS411 setup program. 11/94 Building Technologies Division User Manual CC1U7867en Infrastructure & Cities Sector 1 Introduction Description The rwf55 is used primarily for the control of temperature or pressure in oil- or gas-fired heating plants. Depending on the setting, it is employed as a Compact 3-position controller or as a modulating controller with an analog output. An external switch is provided to convert it to a 2-position controller for controlling 2-stage burners. The built-in thermostat function switches the burner on and off. The controller s operating mode can be changed from heating to cooling, or vice versa. Reference!