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LMV51...
LMV52...
Use
CC1N7550en
24.05.2011
Burner Management
System
Burner control with integrated fuel / air ratio control and load control for use with
forced draft burners.
Burner control with integrated fuel / air ratio control and load control for use with
forced draft burners including oxygen trim control.
The LMV5... and this Data Sheet are intended for use by OEMs which integrate
the burner management systems in their products!
LMV5... is a microprocessor-based burner management system with matching system
components for the control and supervision of forced draft burners of medium to high
capacity.
For gas burners with and without fan to EN 298: 2003
-
For oil burners to EN 230: 2005
-
Building Technologies Division
Industry Sector
7
550
LMV5...

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Table of Contents

   Also See for Siemens LMV5 Series

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   Summary of Contents for Siemens LMV5 Series

  • Page 1 Burner Management LMV5... System LMV51... Burner control with integrated fuel / air ratio control and load control for use with forced draft burners. LMV52... Burner control with integrated fuel / air ratio control and load control for use with forced draft burners including oxygen trim control. The LMV5...
  • Page 2 To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! The LMV5... is a safety device! Do not open, interfere with or modify the unit. Siemens will not assume responsibility for any damage resulting from unauthor- ized interference! •...
  • Page 3 Mounting notes • Ensure that the relevant national safety regulations are complied with Notes for mounting LMV5... Notes for mounting AZL5... 7550m02e/1208 3/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...
  • Page 4 Installation notes • Always run high-voltage ignition cables separately while observing the greatest possible distance to the unit and to other cables • Do not mix up live and neutral conductors Electrical connection of the flame detectors It is important to achieve practically disturbance- and loss-free signal transmission: •...
  • Page 5 Operating Instructions AZL5… (U7550.3) for user level......74 319 0307 0 Service notes • If fuses are blown, the unit must be returned to Siemens Life cycle Burner controls has a designed lifetime* of 250,000 burner startup cycles which, under normal operating conditions in heating mode, correspond to approx.
  • Page 6 Mechanical design The following system components are integrated in the basic unit of the LMV5…: • Burner control with gas valve proving system • Electronic fuel / air ratio control for use with a maximum of 4 (LMV51…) or 6 (LMV52…) actuators •...
  • Page 7 Mechanical design (cont´d) When replacing the LMV5... basic unit (BU), all parameters can be saved in a backup memory of the AZL5… to be downloaded again when the new unit is installed. Hence, manual reprogramming is not required. To design specific fuel trains, the burner / boiler manufacturer can choose from a total of 7 valve families and –...
  • Page 8 Technical data Mains voltage AC 120 V AC 230 V LMV5... basic unit -15% / +10% -15% / +10% Transformer AGG5.210 AGG5.220 - Primary side AC 120 V AC 230 V - Secondary side 1 AC 12 V AC 12 V - Secondary side 2 2 x AC 12 V 2 x AC 12 V...
  • Page 9 Cable insulation must meet the relevant temperature requirements and conform to the environmental conditions. The CAN (bus) cables have been specified by Siemens and can be ordered as accessory items. Other cables must not be used. If this is not observed, the EMC characteristics of the LMV5...
  • Page 10 Technical data (cont’d) Operating voltage AC 24 V -15% / +10% AZL5... operating Power consumption <5 W (typically) and display unit Degree of protection of housing - Rear IP00 to IEC 529 - Front IP54 to IEC 529 when installed Safety class I, with parts according to II and III to DIN EN 60730-1...
  • Page 11 Technical data (cont’d) Flame supervision Note: All measured voltages refer to connection terminal N (X10–02, terminal 4). QRI (suited for Supply voltage operation / test at termi- Approx. DC 14 / 21 V continuous operation) nal POWER QRI... (X10–02, terminal 2) Minimum signal voltage required at ter- Min.
  • Page 12 Technical data (cont’d) Flame supervision For intermittent operation only. QRA2… / QRA4.U / QRA10… with AGQ1…A27 Note! AGQ1… is only available for AC 230 V mains voltage. Power supply in operation DC 280…325 V QRA… Power supply in test mode DC 390…750 V For more detailed information about QRA2…...
  • Page 13 Technical data (cont’d) Flame supervision Power supply for operation QRA7… (suited for continuous - QRA73A17 / QRA75A17 AC 120 V operation) - QRA73A27 / QRA75A27 AC 230 V Power supply for test via increasing the From DC 14 V up to DC 21 V power supply for QRI...
  • Page 14 Technical data (cont’d) Flame supervision QRB... (for intermittent No-load voltage at the QRB... terminal Approx. DC 8 V operation only) (X10–02, terminal 1) Detector current required (with flame) Min. DC 30 µA Display flame 35 % Permissible detector current (dark current Max.
  • Page 15 Technical data (cont’d) DIN EN 60721-3-1 Storage Environmental Climatic conditions Class 1K3 conditions Mechanical conditions Class 1M2 (all LMV5... system Temperature range -20...+60°C components) Humidity <95% r.h. DIN EN 60721-3-2 Transport Climatic conditions Class 2K2 Mechanical conditions Class 2M2 Temperature range -20...+60°C Humidity <95% r.h.
  • Page 16 Power supply for the LMV5... system General The LMV5... system is powered via external transformer AGG5.2..This transformer supplies power to certain electronics sections via terminal X10 – 01 and to internal modules, actuators and display and operating units via terminal X52. Run the power lines to the bus users together with the communication lines in a common cable.
  • Page 17 Power supply for LMV5... system (cont´d) Example 2 Basic unit LMV5... in the control panel, actuator on the burner; CAN bus cable «LMV5... ↔ last actuator» >20 m Control cabinet Burner SA 1 SA 2 SA 3 SA 4 SQM4... SQM4...
  • Page 18 Power supply for the LMV5... system (cont´d) Determination of the The maximum cable length between power transformer and CAN bus users is depend- maximum cable length ent on the type of cable (cross-sectional area), the number of actuators and the type of actuator (supply current).
  • Page 19 Diagram for cable length SQM45..., SQM48... and SQM9... AGG5.631 (cable type 2) AGG5.641 (cable type 1) 1 x SQM9... 1 x SQM48... + 1 x SQM9... 1 x SQM45... + 1 x SQM9... CAN bus connection between power transformer and actuator group Note! When using a PLL52..., the maximum permissible cable length is to be reduced by 2 m.
  • Page 20 Power supply for the LMV5... system (cont´d) AGG5.631 Cross-section in mm AGG5.631 (cable type 2) 1 x AZL5... 1 x AZL5... + 1 x SQM45... CAN bus connection between power transformer and AZL5... display and operating unit Cable types AGG5.641 (cable type 1) LMV5... ↔ SA AGG5.631 (cable type 2) LMV5...
  • Page 21 Function of communication interfaces of AZL5... The AZL5... is equipped with 3 different interfaces (connection facilities): • Interface for LMV5... basic unit: CAN bus including power supply for AZL5... CAN X70 CAN bus connection for LMV5... basic unit, RJ45 (Sub-D connector X70) •...
  • Page 22 Function of VSD (only LMV51.3... / LMV52.2... with AZL52… and LMV52.4...) General The VSD module is an extension to the LMV52.2... and is used for the control of a VSD that ensures safety-related supervision of the fan speed. 2 fuel meters (oil and gas) can be connected as an option. A VSD can be connected to the VSD module integrated in the LMV52.2…...
  • Page 23 Functional tests Both functional tests with the LMV5... system were conducted and successfully com- pleted with the following types of VSDs: - Micromaster 440 Siemens: - VT2807 Danfoss: In operation, VSDs produce electromagnetic interference. For this reason – to ensure EMC of the entire system – the instructions given by the...
  • Page 24 Function of LMV52... with O2 trim control General The LMV52... system is an extended LMV51... system. A special feature of the LMV52… is control of the residual oxygen content, aimed at increasing boiler efficiency. In addition to the features of the LMV51..., the LMV52... provides O trim control, con- trol of a maximum of 6 actuators, control of a VSD, and acquisition of cumulated fuel consumption and current fuel throughput.
  • Page 25 Function of LMV52... with O2 trim control (cont’d) O2 trim control The O trim controller or O2 monitor can be deactivated or activated in various operat- O2 trim controller / ing modes by setting a parameter. O2 monitor Warning! The ratio curves must always be adjusted such that there are sufficient amounts of excess O2 available, irrespective of environmental conditions! Parameter Ctrl/Guard (man deact / O...
  • Page 26 Block diagram inputs / outputs LMV5... X8-01.1 Signal lamp gas LMV5... X8-01.2 Signal lamp oil OIL + GAS X8-03.2 Auxiliary terminal for valves connected in series X8-03.3 X8-03.1 Fuel valve V1 (OIL) X8-02.2 Auxiliary terminal for valves connected in series X8-02.3 X8-02.1 Fuel valve V1 (OIL)
  • Page 27 Block diagram inputs / outputs (cont´d) Power signal for air pressure switch (LP) On/Off Power signal for START start release oil HO-START Power signal for oil pressure switch-min START Power signal for start release gas FLAME alternative 1 AGG5.2 Black Neutral conductor LINE Power signal...
  • Page 28 Block diagram inputs / outputs (cont´d) CD O (0 2-D ) Pt 100 Pt/Ni 1000 LINE SEK II SEK III SEK I 12V 0 0 12V 12V/1,2A D EF L DF O (0 2-I ) AGG5.2 SEK II 12VAC Brown CANH CANL 12VAC1...
  • Page 29 Connection terminals Shielding: a) + b) Optional shield connection for rough environmental conditions For shielding the cables on the VSD, refer to the following pieces of documen- tation: • User Documentation A7550.2en Micromaster User Manual 6SE6400-5AW00-0BP0 • Danfoss Operating Instructions VLT 6000 (MG60A703), chapter «Installa- tion»...
  • Page 30 Terminal marking of LMV52... with PLL52... O2 module (cont’d) Pt/LG-Ni 1000 F 6.3 AT Pt/LG-Ni 1000 CANH CANL 12VAC1 12VAC1 12VAC1 braun Brown 12VAC2 12VAC2 12VAC2 CANH CANL 30/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...
  • Page 31 Fuel train applications (examples) Direct gas ignition Program Direct ignition 7550s01E/0202 Gas pilot ignition 1 Program Gas pilot 7550s02E/0202 Gas pilot ignition 2 Program Gas-Pilot 7550s17E/0202 Fuel valve control Gas (always modulating) Legend (fuel trains): Not used Preheating device Fuel valve Gas valve proving Pressure switch Heating element...
  • Page 32 Fuel train applications (examples) [cont´d] Program Direct ignition with light oil, multistage 1-stage burner 7550s03E/0499 Program 2-stage burner 7550s04E/0800 Program 3-stage burner 7550s05E/0800 32/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...
  • Page 33 Fuel train applications (examples) [cont´d] Program Direct ignition with light oil, modulating Modulating burner (without shutdown facility for adjustable head) 7550s06e/0308 Program Modulating burner (with shutdown facility for adjustable head) 7550s07e/0308 Light oil (direct transformer ignition) Fuel valve control Legend (fuel trains): Air damper Light oil position...
  • Page 34 Fuel train applications (examples) [cont´d] Direct ignition with heavy oil, multistage 2-stage burner Direct ignition with Modulating burner LMV5...- heavy oil direct start - input heavy oil, modulating Circulation from phase 38, max. 45 s as soon as direct heavy oil start = ON in phase 38 →...
  • Page 35 Fuel train applications (examples) [cont´d] Dual-fuel burner gas / light oil with gas pilot ignition SV gas V1 gas V2 gas PV gas V2 oil V3 oil LOgp V1 oil SV oil 7550s15E/0202 Light oil Fuel valve control Light oil (with gas pilot ignition) Legend (fuel trains) Light oil Safety time...
  • Page 36 Fuel train applications (examples) [cont´d] Dual-fuel burner gas / heavy oil with gas pilot ignition SV-gas PV-gas HOgp V3-oil SV-oil V1-oil V2-oil Heavy oil (with gas pilot ignition) Fuel valve control Legend (fuel trains): Phase 44 Heavy oil max. 45 s Pilot valve TSA Safety time Fuel valve...
  • Page 37 Dimensions Dimensions in mm LMV5... 17,4 15,7 30,3 44,4 46,6 78,5 82,3 23,2 26,8 34,55 49,25 34,9 44,4 37/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...
  • Page 38 Dimensions (cont´d) Dimensions in mm AZL5... 1) Clamping range min. 1 mm, max. 5 mm 38/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...
  • Page 39 66.3 AGG5.220… AGG5.210: 120 V coil AGG5.220: 230 V coil 12 V coil 7550m04e/0906 12 V coil 102.5 + 0.5 © 2011 Siemens AG Industry Sector Building Technologies Division Subject to change! 39/39 Building Technologies Division CC1N7550en Industry Sector 24.05.2011...

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