Siemens RDU340 Basic Documentation
Flush-mounted room temperature controllers for vav / cav applications, with lcd
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Also See for RDU340:
- Application manual (28 pages) ,
- Manual (15 pages) ,
- Operating instructions (2 pages)
Related Manuals for Siemens RDU340
Summary of Contents for Siemens RDU340
- Page 1 Flush-mounted room temperature controllers for VAV / CAV applications, with LCD RDU340 Basic Documentation Edition: 3.0 CE1P3078en Building Technologies 2014-11-03...
- Page 2 2 / 32 Siemens Basic Documentation CE1P3078.en Building Technologies 2014-11-03...
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Page 3: Table Of Contents
Operating Instructions ................24 Disposal ....................24 Engineering ..................25 Connection terminals ................25 Connection diagrams ................25 Mechanical design ................26 Dimensions ..................27 Technical data ..................28 3 / 32 Siemens RDU340… Basic Documentation CE1P3076.en Building Technologies Table of contents 2014-11-03... -
Page 4: About This Document
Before you start 1.3.1 Copyright This document may be duplicated and distributed only with the express permission of Siemens, and may be passed only to authorized persons or companies with the required technical knowledge. 1.3.2 Quality assurance These documents have been prepared with great care. -
Page 5: Summary
· Reload factory settings for commissioning and control parameters Type summary Control output Product Operating Voltage number 3 pt on/off DC 0..10 V ü ü RDU340 AC 24 V white 5 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Summary 2014-11-03... -
Page 6: Equipment Combinations
GMA161… 4614 DC 0…10 V damper actuator GEB161… 4621 GCA161… 4613 GBB161… 4626 GIB161… GDB181.1E/3 VAV compact controller 3544 GLB181.1E/3 *) The documents can be downloaded from http://siemens.com/bt/download. 6 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Summary 2014-11-03... -
Page 7: Accessories
· Heated or cooled by single duct. · Heated and cooled by single duct with auxiliary electrical heater. The RDU340 is suitable for use with VAV systems in connection with the VAV compact controllers types G…B181.1E/3. The RDU340 controls ·... -
Page 8: Functions
Concurrent display of Concurrent display of the current temperature or setpoint in °C and in °F °C and °F (parameter P07) is possible on the controller without weekly time program. 8 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 9: Operating Modes
– protected against frost (factory setting 8 °C, can be disabled or changed via P65). /Protection mode – protected against overheating (factory setting OFF, can be enabled or changed via P66) 9 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 10: Setpoints
(heating or cooling). This means no protective heating or cooling function and thus risk of frost in the heating mode or risk of overheat in cooling mode! 10 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 11: Applications
Note: on-off electrical heater V1 Heating or heating / cooling valve actuator B1 Return air temperature sensor or external room temperature sensor (optional) E1 Electric heater B2 Changeover sensor (optional) 11 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 12: Additional Features
, the keypad will be locked or unlocked respectively. If “Auto lock” is configured, then the controller will automatically lock the keypad after 30 seconds of the last adjustment. Min / Max air flow 12 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... - Page 13 External temp. sensor External temp. sensor Not active 10...50 ˚C Built-in sensor Built-in sensor Not active Built-in sensor + limit 10…50 ˚C Built-in sensor Active by external sensor 13 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03...
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Page 14: Control Sequences
The output can be limited to a minimum and maximum value if required. See section 4.5 "additional features". Control sequence The diagram below shows the control sequence for continuous control. modulating output Heating only mode Cooling only mode Changeover 14 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... - Page 15 Control command “Valve” Proportional band “Heating” Proportional band “Cooling” Vmin Min. limitation for output Vmax Max. limitation for output Note The diagrams show the PI controller’s proportional part only 15 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03...
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Page 16: Single Duct With Electrical Heater
Vmax Max. limitation for output Control command “actuator” Proportional band “Cooling” Control command “electrical heater” Dead zone Switching differential Note: The diagrams show the PI controller's proportional part only. 16 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 17: Control Output
1. When the acquired room temperature is above the setpoint (electric heater). 2. When the electrical heater has been switched on for more than 1 minute. A safety thermostat (to prevent overheating) must be provided externally. Caution 17 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 18: Multifunctional Input
Each function can only be assigned to input X1 or X2; only “Alarm” can be assigned to both inputs. X1 is factory-set to “Operating mode switchover” (3) and X2 to “Heating/cooling changeover” (2). For more information see section 4.4 “Applications”. 18 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 19: Error Handling
DC 0…10 V output signal inverted (see section 4.5) n.a. Note: During startup, the controller reloads the control parameter factory settings after each DIP switch settings change. 19 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... -
Page 20: Control Parameters
*) If one of the digital inputs is commissioned as window contact, and the contact is closed, the controller will switch to ECO mode and parameter setting will not be possible. Solution: open the window contact. 20 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03... - Page 21 (DIP switch #1 = ON) · P02 is not available when the controller is commissioned for manual heating/cooling changeover (P01=2) · Parameter display depends on selected application and function (x) Not available 21 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03...
- Page 22 0:= Digital input not activated 1:= Digital input activated 0…49 °C = measured temp. value 00 := H/C input short 100:= H/C input open ü Status input X2 Diagnose Same as d02 22 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Functions 2014-11-03...
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Page 23: Handling
· Recalibrate the temperature sensor if the room temperature displayed on the Calibrate sensor controller does not match the room temperature measured. To do this, change parameter P05. 23 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Handling 2014-11-03... -
Page 24: Operating Instructions
Directive 2012/19/EU and may not be disposed of as domestic waste. · Dispose of the device via the channels provided for this purpose · Comply with all local and currently applicable laws and regulations. 24 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Handling 2014-11-03... -
Page 25: Engineering
Control output for DC 0…10 V actuator X1, X2 Multifunctional input for temperature sensor (e.g. QAH11.1) or switch Measuring neutral for sensor and switch Connection diagrams Room temperature controller RDU340... Application: DC 0…10V actuator for heating or Single duct in cooling... -
Page 26: Mechanical Design
Additional user information Key lock active Condensation in room (dewpoint sensor Operating mode active) Standby / protected mode Indicate alarm or reminder Comfort mode Energy Saving mode 26 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Mechanical design 2014-11-03... -
Page 27: Dimensions
Dimensions Dimensions in mm 27 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Mechanical design 2014-11-03... -
Page 28: Technical Data
Multifunctional input X1/X2 Selectable 0…6 Input X1 Factory setting = 3 (P38) Operating mode switchover Heat/cool changeover sensor Input X2 Factory setting = 2 (P40) 28 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Technical data 2014-11-03... - Page 29 1 x 0.4…2.5 mm or 2 x 0.4…1.5 mm Housing front color RAL 9003 white Weight 0.220 kg *) The documents can be downloaded from http://siemens.com/bt/download. 29 / 32 Siemens RDU340… Basic Documentation CE1P3078en Building Technologies Technical data...
- Page 30 Standby /Protection mode ........9 Heating mode ............. 14 Switching differential ..........8 Housing color............5 Temperature out of range ........19 Integral action time ..........8 Temporary setpoint ..........10 30 / 32 Siemens Basic Documentation CE1P3076.en Building Technologies Index 2014-11-03...
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- Page 32 Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 © 2008 (-2014) Siemens Switzerland Ltd. www.siemens.com/sbt Subject to change 32 / 32 Siemens RDU340… Basic Documentation CE1P3078en...