Siemens LME76 Basic Documentation
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Siemens LME76 Basic Documentation

Burner control
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LME75/LME76
Burner control
Basic Documentation
Software version V03.00 or higher
CC1P7156en
24.07.2020
The LME75/LME76 and this basic documentation are intended for original
equipment manufacturers (OEMs) using the LME75/LME76 in or on their
products.
Smart Infrastructure

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Summary of Contents for Siemens LME76

  • Page 1 LME75/LME76 Burner control Basic Documentation The LME75/LME76 and this basic documentation are intended for original equipment manufacturers (OEMs) using the LME75/LME76 in or on their products. Software version V03.00 or higher Smart Infrastructure CC1P7156en 24.07.2020...

  • Page 2: Supplementary Documentation

    QRA7 UV flame detector Infrared flame detector SQN7 Actuator SQM4 Actuator SQM5 Actuator Pressure switch AGG3 Connector set AGG9 Connector set OCI410 BC interface ACS410 PC software (on request) Potentiometer 2/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en Typographical conventions 24.07.2020...

  • Page 3: Table Of Contents

    QPL pressure switch ..................24     2.18   Dummy plug for RJ11 ..................24   2.19   AGG3 connector sets for LME75/LME76 ............24   2.20 AGG9 connector sets for LME75/LME76 ............25     2.21 OCI410 service tools ..................26  ...
  • Page 4   8.12 Flame supervision ..................60     8.12.1   Ionization probe with LME75/LME76 at terminal X10-06 ......60   8.12.2   QRA7 with LME75 at terminal X10-05 ............62   8.12.3 QRI with LME75 at terminal X10-05 .............. 64  ...
  • Page 5 Pressure switch valve proving or pressure switch-max terminal X9-04 ..74   10.4   Ionization probe terminal X10-06 ..............76   10.5 QRA7/QRI terminal X10-05 (LME75 only) ............. 77     10.6 LFS1 terminal X10-05 (LME76 only) ............. 79    ...
  • Page 6 End of info level ................... 126     15.8 Service level ....................127     15.8.1   Service level display ..................128   15.8.2 Display of service values ................129     6/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en Overview 24.07.2020...
  • Page 7 Display of errors (faults) with lockout ............155     16.4.2   Intensity of flame ionization ................. 156   16.4.3   Intensity of flame QRA7/QRI (LME75) or LFS1 (LME76) ......157   16.4.4 Reset ......................157     16.4.5 Display of preset output ................158  ...
  • Page 8 Error during restore process ................ 168     16.8.2   Reset ......................168     Error code list ....................169     Unit history ....................172   Table of Figures ................... 176     8/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en Overview 24.07.2020...

  • Page 9: Typographical Conventions

    The unit may only be used for 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. The product can only function correctly and safely if shipped, stored, set up, and installed correctly, and operated and maintained with care.

  • Page 10: Overview

    The LME75/LME76 is responsible for starting up and supervising 1-stage or 2-stage forced draft burners or forced draft burners with pneumatic/mechanical ratio control modulation in continuous operation.
  • Page 11 The system components for the LME75/LME76 (AZL2) are connected directly to the LME75/LME76 via the BC interface. All safety-related digital inputs and outputs of the system are monitored by a contact feedback network. For continuous operation, the ionization probe, QRA7, QRI, or LFS1 (including its flame detector RAR or ionization probe) can be used in connection with the LME75/LME76.

  • Page 12: Indication And Diagnostics

     Continuous operation (parameter 239 = 0)  BC interface  The parameters for the LME75/LME76 can be set via the display or the ACS410  Plug-in space for PME75/PME76 The following items are integrated into the LME75/LME76:  BC interface for connecting a AZL2 or PC ...

  • Page 13: Lme75/Lme76

    2.4 LME75/LME76 Parameterized LME75/LME76 for the supervision of multistage or modulating forced draft oil/gas burners and atmospheric burners of medium to large capacity in continuous operation. With controlled air damper control. Article no. Type ● ● Mains voltage 120 V AC ●...

  • Page 14: Pme75/Pme76 For 120 V Ac Mains Voltage

    2.5 PME75/PME76 for 120 V AC mains voltage PME75/PME76 for the LME75/LME76, with oil or gas burner program sequences for the LME75/LME76 Example: Article no. Type ● ● ● ● ● ● ● ● Mains voltage 120 V AC ●...
  • Page 15 ● ● ● ● ● Oil pressure switch-min / oil pressure switch-max  depending on the parameterization ● ● Oil preheater / oil temperature limiter  depending on the parameterization 15/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 16: Pme75/Pme76 For 230 V Ac Mains Voltage

    2.6 PME75/PME76 for 230 V AC mains voltage PME75/PME76 for the LME75/LME76, with oil or gas burner program sequences for the LME75/LME76 Example: Article no. Type ● ● ● ● ● ● ● ● Mains voltage 230 V AC ●...
  • Page 17 ● ● ● ● ● Oil pressure switch-min / oil pressure switch-max  depending on the parameterization ● ● Oil preheater / oil temperature limiter  depending on the parameterization 17/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 18: Display Units / Operating Units And Accessories

    With RJ11 connector  Cable length 1 m BPZ:AGV50.100 AGV50.100  Packs of 10 pieces Every LME75/LME76 must come complete with a cable to connect it to the AZL2. 2.8 LFS1  Note! Depending on the flame detector used. LME76 only External flame safeguard with approval for continuous operation for the supervision of oil and gas flames.

  • Page 19: Qra7

    2.9 QRA7 UV flame detector for use with Siemens burner controls for the supervision of gas and oil flames. Refer to data sheet N7712. Article no. Type Mains voltage Detector tube length BPZ:QRA73.A17 QRA73.A17 120 V AC 125 mm BPZ:QRA73.A27 QRA73.A27...

  • Page 20: Sqn70/Sqn71

    Shaft no. 1  Running time 30 s  Operating torque 2.5 Nm BPZ:SQN72.6C4A20 SQN72.6C4A20  Holding torque 1.3 Nm  With potentiometer  Direction of rotation left  230 V AC 20/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 21: Actuator Sqm40

    Torque 18 Nm  Running time 65 s  Diagram 8  3-position step modulation BPZ:SQM40.387A20 SQM40.387A20  Shaft no. 7  European version  230 V AC  Without potentiometer 21/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 22: Actuator Sqm41

    Running time 65 s  Diagram 8  3-position step modulation BPZ:SQM41.387R11 SQM41.387R11  Shaft no. 7  US version / Canadian version  120 V AC  With 90° double potentiometer 22/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 23: Actuator Sqm5

    120 V AC  Torque / holding torque 40 Nm  Running time 60 s at 90° BPZ:SQM56.680A2 SQM56.680A2  Running time 87 s at 130°  230 V AC 23/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 24: Qpl Pressure Switch

    2.18 Dummy plug for RJ11 Article no. Type  For 6-pin modular plug (RJ11)  Supplier recommendation:  Molex, order number: 085 999 3256 2.19 AGG3 connector sets for LME75/LME76 Article no. Type  Complete connector set Example:  RAST5 and RAST3.5 BPZ:AGG3.710...

  • Page 25: Agg9 Connector Sets For Lme75/Lme76

    2.20 AGG9 connector sets for LME75/LME76 The individual connectors are delivered in packages of up to 200 pieces each. Article no. Type BPZ:AGG9.201 AGG9.201 Terminal X2-09B (RAST5) BPZ:AGG9.203 AGG9.203 Terminal X3-02 (RAST5) BPZ:AGG9.209 AGG9.209 Terminal X10-06 (RAST5) BPZ:AGG9.301 AGG9.301 Terminal X2-01 (RAST5) BPZ:AGG9.302...

  • Page 26: Oci410 Service Tools

     Parameter change possible for the OEM and BPZ:OCI410.40 OCI410.40 heating engineer 2.22 PC software ACS410 PC software for parameterization and visualization of the burner control. On request. Refer to software documentation J7352. 26/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 2 Overview 6/27/2018...

  • Page 27: Mounting/Assembly

     In the geographical areas where DIN regulations are in use, the requirements of VDE must be complied with, especially DIN/VDE 0100, 0550 and DIN/VDE 0722  The LME75/LME76 must be secured with fixing screws M4 (UNC32) or M5 (UNC24), observing a maximum tightening torque of 1.8 Nm at all 3 fixing points.

  • Page 28: Standards And Certificates

    Note on DIN EN 60335-2-102! Household and similar electrical appliances – Safety – Part 2-102: Particular requirements for gas, oil and solid-fuel burning appliances having electrical connections. The electrical connections of the LME75/LME76 comply with the requirements of EN 60335-2-102. EAC Conformity (Eurasian Conformity)
  • Page 29 1 hour. Maximum operating duration in LME76 LFS1.21Ax with QRA2 / QRA4 / QRA10 SIL3 6.3*10 intermittent mode (< 1 hour) 29/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 3 Mounting/assembly 6/27/2018...

  • Page 30: Safety Notes

    To avoid personal injury or damage to property or the environment, the following warning notes must be observed. The LME75/LME76 is a safety device. Do not open, interfere with or modify the unit. Siemens does not assume responsibility for damage resulting from unauthorized interference! This document also contains additional warning notes that must be observed.
  • Page 31 To ensure safety and reliability of the LME75/LME76, the following points must also be observed:  Avoid condensation and damp environments. If such conditions do occur, make sure that the unit is completely dry before switching on again. Failure to observe this information poses a risk of electric shock ...

  • Page 32: Installation Notes

    Technical data. When using other signal cables, it is not guaranteed that the required cable features will be available  Do not lay the signal cable AGV50 from the LME75/LME76 to the AZL2 together with other cables  Service operation with a longer signal cable from the LME75/LME76 to the AZL2 or from the LME75/LME76 to OCI410.

  • Page 33: Electrical Connection Of The Flame Detectors

    In the case of simultaneous operation of the ionization probe, QRA7, QRI, or LFS1, it is essential to observe the settings for the parameters outlined in chapter 10.4 “Ionization probe terminal X10-06”, chapter 0 “ 33/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 4 Safety notes 6/27/2018...

  • Page 34: Disposal Notes

     An LFS1 or the connection between terminal X10-05 pin 5 and terminal X10-05 pin 1 must not be connected to the LME75. Failure to observe this information will result in the LME75 becoming defective Disposal notes The unit contains electrical and electronic components and must not be disposed of together with domestic waste.

  • Page 35: Lifetime

    EN 298. A summary of the conditions has been published by the European Control Manufacturers Association (Afecor) (www.afecor.org). The designed lifetime is based on use of the LME75/LME76 according to the manufacturer’s data sheet and the basic documentation. After reaching the designed lifetime in terms of the number of burner startup cycles, or after the corresponding usage time, the LME75/LME76 must be replaced by authorized personnel.

  • Page 36: Wiring

    Wiring 6.1 Inputs/Outputs 7156z13/0217 Figure 3: Inputs and outputs 36/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 37: Introduction To Wiring

    LME75/LME76 applications. 6.2.1 Terminals The connection terminals of the LME75/LME76 are a RAST5 mains voltage plug and a RAST3.5 plug (for low-voltage connections). The mains voltage plugs are coded in such a way that they only fit into one terminal on the LME75/LME76, which eliminates the risk of them being inserted into the incorrect terminal.

  • Page 38: Earthing

    Functional earth (FE) The functional earth (FE) conductor at terminal X10-06 pin 1 is connected to reference ground by means of capacitors on the LME75/LME76 PCB. When monitoring the ionization current in earth-free mains, terminal X10-06 pin 1 must be connected to burner ground.

  • Page 39: Description Of The Terminals

    ● 5 A  Note! The total current for all components connected to the LME75/LME76 flows through the connections and components in the safety loop. Caution! In the safety loop, temporarily switching (< 1 second) contacts, buttons or similar must not be wired.

  • Page 40: Terminal X2-01 / X2-02 / X6-03

    Oil preheater / oil temperature limiter peak (peak value) feedback ● ● 1.5 A X6-03 03K57 AGG9.309 Extra valve ● 1.5 A (Optional: safety valve) *) Depending on the PME75/PME76 and respective parameterization 40/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 41: Terminal X3-02 / X5-01 / X5-03 / X9-04

    Load controller CLOSED 234.00  ● Load controller OPEN 234.01  272  274.00  X5-03 04K01 AGG9.403 274.01  515.00  Load controller / control thermostat / temperature limiter ● 515.01  power supply 560  563  41/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...
  • Page 42 237.01  Feedback for valve proving pressure switch ● 241  Pressure switch-max 241.00  241.01  X9-04 03K30 AGG9.313 241.02  242  Valve proving pressure switch power supply ● 243  Pressure switch-max 244  245  42/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 43: Terminal X10-05 / X10-06

    6.3.4 Terminal X10-05 / X10-06 Figure 9: Description of terminal X10-05 / X10-06 Terminal Coding Input Output Function Parameter Connector assignment for LME75 ● QRI flame signal (connecting cable) 179  180  ● QRI supply voltage / detector test (brown connecting cable) 216 ...
  • Page 44 Terminal Coding Input Output Function Parameter Connector assignment for LME75/LME76 ● Burner ground (in earth-free mains) 179  180  216  217.00  217.01  X10-06 02K43 AGG9.209 ● Ionization probe 220  240  280  954.00 44/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring...

  • Page 45: Terminal X4-02 / X7-01 / X7-04

    270  Pilot valve PV / fuel valve V1 (option 2 A / 1 A (with valve 271  available to connect to pin 3 or pin 4) proving) ● 272  280  45/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 46: Terminal X2-09 / X7-02

    Actuator cam ignition load 515.01  560  563  ● 230  231  2 A / 1 A (with valve  232  ● proving) X7-02 03K10 AGG9.311 270  271  2 A / 1 A (with valve ● Fuel valve V1/V2 272  proving) 46/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 47: Terminal X56 / X65 / X66 / X76

    10 mA All 4xx  12 V DC All 5xx  Not used (PWM output signal) 0.5 mA AGG9.841 All 6xx  920  12…24 V DC Not used (Hall input signal) 0.4…1 mA Not used (GND) 47/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 48: Assignment Of Terminals For Plug Agg9

    Black Black Brown Green/Yellow Black Blue Black Black Multi function input Lumberg designation Pressure switch (see User Manual A7156.x) Lumberg designation  Figure 13: Assignment of terminals for LME75 AGG9 48/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 49: Lme76

    1 2 3 Lumberg designation 7156a25en/1018 SA-CLOSED SA-NL LME76.000Ax 1 9 11 Multi-function input Pressure switch (see User Manual A7156.x) Lumberg designation  Figure 14: Assignment of terminals for LME76 AGG9 49/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 6 Wiring 6/27/2018...

  • Page 50: Startup

    Check the plant response time with loss of flame Turning off power to the fuel valves by the during operation, which involves manually LME75/LME76 within the period of time permitted for the disconnecting the fuel valves from power and respective plant...
  • Page 51 This document must be kept in a safe place and checked by the expert. Warning! On the OEM access level of the LME75/LME76, it is possible to make parameter settings that differ from application standards. When setting the parameters, it is important to ensure that the application will run safely in accordance with legal requirements.

  • Page 52: Technical Data

    Max. 6.3 A, slow Caution! Risk of damage to the switching contacts! If the external primary fuse (Si) is blown due to overload or short-circuit at the terminals, the LME75/LME76 must be replaced. Power consumption < 10 W, typically < 10 W, typically...

  • Page 53: Terminal Loading: Inputs

    8.2 Terminal loading: Inputs Mains supply: The input current for the power supply is dependent on the operating status of the LME75/LME76 Undervoltage 120 V 230 V Mains Mains  Safety shutdown from the operating ≤ 75 V AC ≤ 165 V AC position at mains voltage ...

  • Page 54: Terminal Loading: Outputs

     Note The input current for the LME75 / LME76 at terminal X3-04 pin 5 also flows through safety loop terminal X3-04 pin 1 / pin 2. The power supply in the LME75 / LME76 to the fan motor, ignition transformer, fuel valves, and actuators is interrupted as soon as one of the components opens the safety loop circuit.
  • Page 55 When activating valve proving (e.g., on shutdown), the load on the valve terminals is restricted. If the load is not reduced, the design lifetime is about 100,000 burner start cycles! 55/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...

  • Page 56: Cable Lengths

    Max. 30 m (100 pF/m), unshielded Specifications as per EN 60730-1 Type of shutdown or interruption for each circuit Shutdown with micro switch 1-pole Mode of operation Type 2 B 56/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...

  • Page 57: Actuators

    Power factor Cos > 0.4 Cos > 0.4 Feedback via input terminal X2-09 pin 8 on the LME75/LME76 depending on the current load of the actuator switching contact used (e.g., cam V2/V2a). 8.6 Cross-sectional areas The cross-sectional areas of the mains power lines (L, N, and PE) and, if required, the safety loop (safety temperature limiter, water shortage, etc.) must be sized for rated...

  • Page 58: Rast3.5 Connector

    Under the burner hood (arrangements for SKII EN 60730-1 additionally required) 8.10 Dummy plug for RJ11 Dummy plug For 6-pin modular plug (RJ11) Supplier Recommendation: Molex Order number: 085 999 3256 58/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...

  • Page 59: Environmental Conditions

    Condensation, formation of ice, and ingress of water are not permitted. Failure to observe this poses a risk of damaging the safety functions and the risk of electric shock. 59/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...

  • Page 60: Flame Supervision

    8.12 Flame supervision 8.12.1 Ionization probe with LME75/LME76 at terminal X10-06 Warning!  Provide protection to prevent people from coming into contact with the ionization probe (risk of electric shock)!  When monitoring ionization currents in earth-free mains, connect terminal X10-06 pin 1 to burner ground Short circuit current Max.
  • Page 61 LFS1, it is essential to observe the parameter settings outlined in chapter 10.4 “Ionization probe terminal X10-06”, chapter 0 “ QRA7/QRI terminal X10-05 (LME75 only)”, and chapter 10.6 “LFS1 terminal X10- 05 (LME76 only)”! If this is not observed, there is a risk of device functions being impaired.

  • Page 62: Qra7 With Lme75 At Terminal X10-05

    8.12.2 QRA7 with LME75 at terminal X10-05 Warning! The QRA7 must not be connected to the LME76. Failure to observe this instruction will result in the LME76 or QRA7 becoming defective. Supply voltage (terminal X10-05 pin 4 / terminal X10-05 pin 5) ...
  • Page 63 “Ionization probe terminal X10-06”, “QRA7/QRI terminal X10-05 (LME75 only)”, and “LFS1 terminal X10-05 (LME76 only)”. Failure to observe this information poses a risk of device functions being impaired. 63/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 64: Qri With Lme75 At Terminal X10-05

    10 M Figure 19: QRI connection diagram Caution! Ensure the 3 QRI connecting wires are connected properly. If connected incorrectly to terminal X10-05, there is a risk that the LME75 and QRI may malfunction. 64/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 65: Lfs1 With Lme76 At Terminal X10-05

    8.12.4 LFS1 with LME76 at terminal X10-05 Warning! An LFS1 or the connection between terminal X10-05 pin 5 and terminal X10-05 pin 1 must not be connected to the LME75. Failure to observe this information will result in the LME75 becoming defective. Caution! Continuous operation of the LME76 with LFS1 is only permitted in connection with…...
  • Page 66 Figure 21: Connection diagram with LFS1 Caution! Refer to the documentation for the LFS1  Data sheet N7782  User documentation A7782 Caution! Refer to the documentation for the PME76  User documentation A7156.xx 66/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...
  • Page 67 8.12.4.3 Connection diagram with LFS1 OR operation LFS1 LME76 LFS1 Figure 22: Connection diagram with LFS1 OR operation Caution! Refer to the documentation for the PME76  User documentation A7156.xx 67/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...
  • Page 68 8.12.4.3 Connection diagram with LFS1 AND operation LFS1 LME76 LFS1 Figure 23: Connection diagram with LFS1 AND operation Caution! Refer to the documentation for the PME76  User documentation A7156.xx 68/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 8 Technical data 8/13/2018...

  • Page 69: Dimensions

    Figure 24: Dimensions of the LME75/LME76 10 Description of inputs on LME75/LME76  Note! This chapter covers the basic features of the LME75/LME75 inputs. For exact use of the inputs, see the sequence diagrams in the user documentation (A7156.x). 69/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 70: Air Pressure Switch Terminal X3-02

    The OEM must check to see whether the burner can be operated without an air pressure switch. This may necessitate a special approval depending on the application. 70/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 71: Pressure Switch-Min Terminal X5-01

    If no signal is received, this leads to a non- alterable lockout. The pressure switch-min must have a normally closed contact. 71/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 72: Pressure Switch-Max, Poc/Cpi, Valve Proving On/Off Or Oil Temperature Limiter Terminal X2-02

    0: During prepurge time 1: During postpurge time 241.02 Gas: Valve proving (PME75.831Ax / PME76.831Ax only) 0: According to parameter 241.01 1: During prepurge time and postpurge time 72/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...
  • Page 73 It is not permitted to have a POC/CPI or pressure switch-max. Failure to observe this information poses a risk of the safety functions of the valve proving function being impaired. 73/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 74: Pressure Switch Valve Proving Or Pressure Switch-Max Terminal X9-04

    0: According to parameter 241.01 1: During prepurge time and postpurge time Gas: Valve proving – test space evacuating (td4) Gas: Valve proving – test time atmospheric pressure (td1) 74/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...
  • Page 75 EN 1643. Failure to observe this information poses a risk of damaging the safety functions. 75/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 76: Ionization Probe Terminal X10-06

    Ensure the ionization probe connecting wires are connected properly. If connected incorrectly to terminal X10-05, there is a risk that the LME76 and ionization probe may malfunction. 76/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 77: Qra7/Qri Terminal X10-05 (Lme75 Only)

    10.5 QRA7/QRI terminal X10-05 (LME75 only) LME... QRA7 / QRI flame signal QRA7 / QRI detector test QRA7 - protective ground (PE) „N“ for QRA7 / QRI „L“ for QRA7 7156z31en/0618 Figure 30: QRA7/QRI terminal X10-05 Parameter Function Gas: Logical combination of both flame signal amplifier channels...
  • Page 78 If an ionization probe is operated simultaneously with a QRA7 or QRI, be sure to note the parameter settings. Caution! Ensure the QRA7/QRI connection wires are connected properly and in-phase. If connected incorrectly to terminal X10-05, there is a risk that the LME75 and QRA7/QRI may malfunction. 78/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 79: Lfs1 Terminal X10-05 (Lme76 Only)

    If no signal is received, this leads to a non-alterable lockout. Warning! In the event of flame supervision with LFS1, the flame signal flame-out- response time (flame fault response time) must be observed. 79/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 80: Flame Safeguard Test

    Failure to observe this information poses a risk of loss of device functions or a fault in the LME76 equipment. Caution! Ensure the LFS1 connection wires are connected properly and in-phase. If connected incorrectly to terminal X10-05, there is a risk that the LME75 and LFS1 may malfunction.  Note! If an ionization probe is operated with an LFS1 simultaneously, be sure to note the parameter settings.

  • Page 81: Analog Input Load Controller Terminal X65

    1 = PWM fan motor / analog modulation  Note! Setting = 1 No function. This selection puts the LME75 / LME76 in lockout position. 2 = Air damper / analog modulation (ASZxx.3x feedback required) 81/177 Smart Infrastructure Basic Documentation LME75…/LME76…...
  • Page 82 Shielded cables must be used if cables are > 10 m.  Note! Load control via analog input terminal X65 always requires an actuator with a built-in ASZ for position feedback. 82/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 83: External Load Controller (On/Off) Terminal X5-03

    1 = PWM fan motor / analog modulation  Note! Setting = 1 No function. This selection puts the LME75 / LME76 in lockout position. 2 = Air damper / analog modulation (ASZxx.3x feedback required) 83/177 Smart Infrastructure Basic Documentation LME75…/LME76…...
  • Page 84 The signal for the external load controller with 3-position step control is checked depending on the parameter settings. If no signal is received, this leads to a non-alterable lockout. 84/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 85: Safety Loop Terminal X3-04

    Warning! The in-phase connection of the power supply must be observed. Failure to observe this information poses a risk of loss of device functions. 85/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 10 Description of inputs on LME75/LME76 8/13/2018...

  • Page 86: Description Of Outputs On Lme75/Lme76

    11 Description of outputs on LME75/LME76  Note! This chapter covers the basic features of the LME75/LME75 outputs. For an exact evaluation and activation of the outputs, see the A7156.x user documentation. 11.1 Fan motor terminal X2-01 LME... Fan motor...

  • Page 87: Oil Temperature Limiter Or Pwm Fan Motor Terminal X2-02

    0: During prepurge time 1: During postpurge time 241.02 Gas: Valve proving (PME75.831Ax / PME76.831Ax only) 0: According to parameter 241.01 1: During prepurge time and postpurge time 87/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...
  • Page 88 Caution! If terminal X2-02 pin 3 is used as the connection for supplying the PWM fan motor, no other motor may be connected on terminal X2-01. 88/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 89: Pwm Fan Motor Control Terminal X76

    Output for connection of a PWM fan motor (DC).  Note! The function of the PWM fan motor is dependent on the PME75/PME76 and the respective parameterization. 89/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 90: Alarm / Remote Lockout Reset Terminal X2-03

    The output is activated when the LME75/LME76 is in the lockout position.  Exception! The output is deactivated (alarm lamp OFF), when the LME75/LME76 is in the lockout position (lockout code Loc: 10) due to an error in the output contacts (welded contact of an output relay).

  • Page 91: Actuator Terminal X2-09

    Oil: Postpurge time (t8) 274.01 Oil: Multiplicator for postpurge time (t8) (extension of the postpurge time Oil: Opening time of actuator (timeout) Oil: Closing time of actuator (timeout) 91/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...
  • Page 92 4 = 4…20 mA with a non-alterable lockout at I < 4 mA 5 = 4…20 mA without a non-alterable lockout at I < 4 mA The actuators are powered by mains voltage delivered directly via the LME75/LME76. 92/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 93: Connection Of Feedback Actuator Position With Asz In Actuator At Terminal X66

    1 = PWM fan motor / analog modulation  Note! Setting = 1 No function. This selection puts the LME75 / LME76 in lockout position. 2 = Air damper / analog modulation (ASZxx.3x feedback required) Operating mode of the ratio control 0 = modulating...
  • Page 94 Direction of rotation Pin 1 Pin 2 Pin 3 Clockwise Countercl ockwise (5 V signal) (Signal) (GND) ● ● Terminal ASZxx30 (1 k conductive plastic 90°) 94/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 95: Ignition Transformer Terminal X4-02

    Output for connection of a safety valve, e.g., for liquefied gas.  Note! The safety valve is only active if a heat request (load controller ON/OFF) is present at terminal X5-01 pin 3. 95/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 96: Fuel Valve V2A / Pilot Valve Pv Terminal X7-01 / X7-04

    Output for connection of the fuel valve V2a / pilot valve PV depending on the selected fuel train (see chapter in the A7156.x user documentation for the PME75/PME76 in use). 96/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 97: Fuel Valve V1 Terminal X7-02 / X7-04

    Output for connection of the fuel valve V1 depending on the selected fuel train (see chapter in the A7156.x user documentation for the PME75/PME76 in use). 97/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 98: Fuel Valve V2 Terminal X7-01 / X7-02

    Output for connection of the fuel valve V2 depending on the selected fuel train (see chapter in the A7156.x user documentation for the PME75/PME76 in use). 98/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 11 Description of outputs on LME75/LME76 8/13/2018...

  • Page 99: Bc Interface Terminal X56

    Technical data. When using other signal cables, it is not guaranteed that the required cable features will be available  Do not lay the signal cable from the LME75/LME76 to the AZL2 together with other cables. Use a separate cable ...

  • Page 100: Function

    12 Function 12.1 Preconditions for startup  LME75/LME76 is reset  All contacts in the line are closed, heat request  No undervoltage  Air pressure switch or POC in no-load position or Dbr1 connected to terminal X2-02 (depending on PME75/PME76 and respective parameterization) ...

  • Page 101: Control Sequence In The Event Of Fault

    After a non-alterable lockout, a reset can be carried out immediately. Press and hold the lockout reset button (info button) for about 1 second (< 3 seconds). The LME75/LME76 can only be reset when all contacts in the line are closed and there is no undervoltage.

  • Page 102: Operation, Indication, Diagnostics

    ......... Error code output; refer to Error code Flashing red table Interface diagnostics Red flickering light Heat request, prepurging Yellow ........New program card Yellow-yellow-red ..Steady on Yellow Green 102/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 12 Function 8/13/2018...

  • Page 103: Diagnostics Of Cause Of Error

    > 3 s < 3 s Interface diagnostics Error code table PC / analyzer xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx > 3 s Figure 50: Diagnostics of cause of error 103/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 12 Function 8/13/2018...
  • Page 104 Reset to quit the diagnostics of the cause of the error and switch the burner on again. Press the lockout reset button (info button) for about 1 second (< 3 seconds). 104/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 12 Function 8/13/2018...

  • Page 105: Multistage Or Modulating Operation With Actuator

    1 = PWM fan motor / analog modulation  Note! Setting = 1 No function. This selection puts the LME75 / LME76 in lockout position. 2 = Air damper / analog modulation (ASZxx.3x feedback required) Operating mode of the ratio control 0 = modulating...
  • Page 106 4 = 4…20 mA with a non-alterable lockout at I < 4 mA 5 = 4…20 mA without a non-alterable lockout at I < 4 mA 106/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 13 Multistage or modulating operation with actuator 8/13/2018...

  • Page 107: Actuators

    ¹) Depending on the program sequence in the LME75/LME76 or PME75/PME76 13.2 Function The internal program cycle time of the LME75/LME76 is about 0.147 seconds (≈ 0.15 seconds). In each program sequence, each input is read, and the outputs are switched on or off accordingly.

  • Page 108: Load Controller Inputs

    13.3 Load controller inputs 13.3.1 Analog input terminal X65 The LME75/LME76 handles the analog input signals with the help of an 8-bit A/D converter. 13.3.2 Setting the maximum running time of the actuator (parameter 259.00 / parameter 260 timeout) Parameter...
  • Page 109 CLOSED position to the high-fire position (e.g., 30 seconds for 90° or more). If the actuator does not reach its position within this period of time, a non-alterable lockout (Loc: 6) will be triggered in the LME75/LME76. 109/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 110: Multistage/Modulating Mode Via 3-Position Step Input Terminal X5-03

    The modulation range in angular degrees corresponds to the angular range between the low-fire and high-fire position. Calculation: High-fire position - low-fire position = modulation range 110/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 13 Multistage or modulating operation with actuator 8/13/2018...

  • Page 111: Setting The Minimum Power Adjustment (Dead Band) (Parameter 123) In Modulating Mode Via Analog Input Signal Terminal X65

    Actuator runtime with 50 Hz mains frequency 12.5 Actuator runtime with 60 Hz mains frequency 12.5 Actuator runtime with 50 Hz mains frequency Actuator runtime with 60 Hz mains frequency 111/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 13 Multistage or modulating operation with actuator 8/13/2018...

  • Page 112: Application Limits/Examples

    If the value set for parameter 123 is too small, the actuator oscillates around the setpoint, leading to more traveling cycles, increased switching frequency and more wear and tear on the actuator. 112/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 13 Multistage or modulating operation with actuator 8/13/2018...

  • Page 113: Safety Notes For Use Of The Azl2

    Failure to observe this information poses a risk of electric shock. If you have any other questions relating to the AZL2, please contact your heating engineer or get in touch with Siemens at any of the addresses provided in this basic documentation. 113/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 114: Operation Via Azl2

    + button  One menu level down  Increase value + and - button: Escape function (press simultaneously)  No adoption of value  One menu level up 114/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 115: Meaning Of Symbols On The Display

    Special functions 15.3.1 Manual locking Press together with any other button. /reset The LME75/LME76 switches instantly to the lockout position, no matter what the operating position. /reset The display shows the fault status message. and another button (See chapter 17 “Error code list”.)

  • Page 116: Operation

    Display OFF flashes when manual load change is active. 15.4.1.2. Startup/shutdown display Phase display The LME75/LME76 is in Phase 30. A load controller request is made. The bar below the symbol appears. The individual program phases and controlled components are displayed in accordance with the program sequence.

  • Page 117: List Of The Phase Display

    Stop operation Ph74 Postpurging (t8) Valve proving Ph80 Test space evacuating (td4) Ph81 Test time atmospheric pressure (td1) Ph82 Test space filling (td3) Ph83 Test time gas pressure (td2) 117/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 118: Operating Position Display

    Actuator position 0° = 0  Potentiometer value = 0% display Position of actuator high-fire > 0° = > 0  < 1000  potentiometer value = 100% display 118/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 119: Fault Status Messages, Display Of Errors And Info

    1 second, rESEt appears on the /reset display. /reset When the button is released, the LME75/LME76 is reset. is pressed for longer than 3 seconds, InFo, SEr, /reset /reset and OPErAtE are displayed one after the other.

  • Page 120: Menu-Driven Operation

    >8 s Info level /reset >3 s <8 s /reset automatic Service level return after 120 s >8 s Operate >1 s Parameter level Figure 53: Assignment of levels 120/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 121: Info Level

    1…3 s /reset level. The info level displays information about the LME75/LME76 and operation in general.  Note! On the info level, you can press to display the next or the previous parameter.

  • Page 122: Display Of Info Values

    On the left, parameter 103: is displayed flashing. On the right, identification number 0 is displayed. Example: 103: h min s Back to the previous To the next parameter parameter /reset < 1 second 122/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 123: Burner Identification

    The factory settings can only be changed with the help of the ACS410. /reset Press to return to the display of /reset parameters. h min s Back to the previous To the next parameter parameter 123/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 124: Number Of Startups Resettable

    0. /reset /reset Display: 000000 h min s /reset Pressing displays parameter /reset 164 flashing again. h min s Back to the previous To the next parameter parameter 124/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 125: Total Number Of Startups

    /reset display of parameters. h min s To the first parameter on the To the final parameter on the info level info level 125/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 126: End Of Info Level

    When this display appears, you are back on the normal display and can now change to the next level mode. h min s Press to switch between /reset the service and the /reset parameter level. 126/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 127: Service Level

    > 1 second and < 3 seconds displays /reset the parameter value. Pressing for > 3 seconds or takes you /reset back to the parameter number selection (parameter number flashes). 127/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 128: Service Level Display

    Absolute speed of PWM fan motor Standardized speed of PWM fan motor Mains voltage Intensity of flame for flame 1: Ionization Intensity of flame for flame 1: QRA7/QRI or LFS1 128/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 129: Display Of Service Values

    > 1 second and < 3 seconds /reset displays the parameter value. Example: 954.00 0 Back to the previous End of service level – End – parameter 129/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 130: End Of Service Level

    OPErAtE is displayed. h min s When this display appears, you are back on the normal display and can now change to the next level mode. h min s 130/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 131: Parameter Level

    If the factory settings are changed, all changes made must be documented and checked by the OEM. The OEM is obliged to mark the LME75/LME76 accordingly and to include at least the list of parameters and settings in the burner documentation.
  • Page 132  Note! Setting = 1 No function. This selection puts the LME75 / LME76 in lockout position. 2 = Air damper / analog modulation (ASZxx.3x potentiometer feedback required) Operating mode of the ratio control 0 = modulating 1 = multistage...
  • Page 133 3 = 0…20 mA 4 = 4…20 mA with a non-alterable lockout at I < 4 mA 5 = 4…20 mA without a non-alterable lockout at I < 4 mA 133/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 134: Entering The Password

    After the final character is entered, the password must be confirmed with /reset Press again to end the password entry. /reset /reset Example: Password consisting of 5 characters. 134/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 135 PArA appears for a maximum of 2 seconds to confirm that the password has been entered correctly. h min s  Note! For the entry of passwords or burner IDs, the following numbers and letters can be used: 135/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 136: Changing The Heating Engineer's Password

    Proceed as described in chapter 15.9.1 “Entering the password” and repeat the entry of the new password. /reset After the final character is entered, the password must be confirmed with /reset 136/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 137 /reset parameter 041: heating engineer's password. Continue in the parameter End of parameter level – End level to the next parameter – group 100: 137/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 138: Changing The Oem Password

    After the final character is entered, the password must be /reset confirmed with /reset SEt confirms that the new password has been saved. Parameter 042: flashes again. 138/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 139: Backup

    /reset Display: Parameter rEStorE flashes Press to select parameter bAC_UP. Display: Parameter bAC_UP flashes /reset Press to select the backup process. /reset Display: Value 0 139/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 140 OFF appears for standby or Loc xxx in the event of a previous lockout position. /reset  Note! The backup process saves all settings and parameters from the LME75/LME76 memory to the PME75/PME76.  Note! Backing up is recommended after changing parameters.

  • Page 141: Restore

    Display: Value 0 flashes Note!  To detect display errors, the value appears one place shifted to the left. 141/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 142 The restore process writes all settings and parameters from the PME75/PME76 to the internal memory of the LME75/LME76. As part of this process, previous program sequences, parameters, and settings in the internal memory of the LME75/LME76 will be overwritten. Warning! On first startup or after exchange of the PME75/PME76, the sequence of functions and parameter settings must be checked upon completion of the restore process.

  • Page 143: Operating Variants Of The Parameters

    15.10 Operating variants of the parameters The parameters stored in the LME75/LME76 can be displayed and changed on the parameter level. After entering the password, 000: Int appears. Press to select parameter group 100: PArA. Press to select parameter group 200: PArA.

  • Page 144: Parameters Without Index, With Direct Display

    To detect display errors, the value appears one place shifted to the left. Press to select the required preignition time. Display: Preignition time 3.822 flashes h min s 144/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 145 To detect display errors, the value is shown again, but shifted one place to the right. Display: Value 3.822 Back to the previous To the next parameter parameter 145/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 146: Parameters Without Index, With No Direct Display

    To detect display errors, the value appears one place shifted to the left. Press to select the required specified time. Display: Specified time 53.361 flashes h min s 146/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 147 Display: Value 53.361 Press to return to the parameter level. Display: Parameter 224: flashes, characters ._._ do not. h min s Back to the previous To the next parameter parameter 147/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 148: Parameters With Index, With Or Without Direct Display

    .02: MMI phase to the time of fault .03: Power value to the time of fault h min s Example: Parameter 701., index 01:, startup counter reading ._._ To the next index 148/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 149 Back to the previous index When this display appears, you have reached the end of the index level within parameter 701. Display – End – appears flashing. h min s 149/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...
  • Page 150 Parameters cover the period back to the last error since deletion of the history (as far back as parameter 711.) Example: Parameter 711., index 00: h min s Back to the previous To the next parameter parameter 150/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 15 Operation via AZL2 8/13/2018...

  • Page 151: Operation Via Internal Led Display

    + and - button: Escape function     (press simultaneously)  No adoption of value  One menu level up Press and hold for 1 second to enable the backup/restore function. 151/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 16 Operation via internal LED display 8/13/2018...

  • Page 152: Normal Display

    The LME75/LME76 is in standby. 16.2.2 Startup/shutdown display 16.2.2.1. Phase display The LME75/LME76 is in Phase 21. The individual program phases are displayed in accordance with the program sequence. For the color display of the signal lamp, see List of phase display.

  • Page 153: List Of The Phase Display

    Green Operation first stage Green Operation second stage Shutdown Actuator travels to CLOSED position (t12) (home run) Yellow Stop operation Yellow Stop operation Yellow Postpurging (t8) 153/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 16 Operation via internal LED display 8/13/2018...

  • Page 154: Operating Position Display

    16.3 Special functions 16.3.1 Manual locking Press together with any other button. The LME75/LME76 switches instantly to the Alternately lockout position, no matter what the operating position. and another button The signal lamp lights up red. Display shows current error code 167.

  • Page 155: Fault Status Messages And Display Of Errors

    Fault status messages and display of errors 16.4.1 Display of errors (faults) with lockout Loc and 4 are displayed alternately. The LME75/LME76 is in lockout position. Alternately The current error code is displayed, and the signal lamp flashes red. Example: Error code 4  ...

  • Page 156: Intensity Of Flame Ionization

    The signal lamp lights up green. The normal display appears again once this time has > 3 s elapsed. Display: Point . flashes, value 11 does not. 156/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 16 Operation via internal LED display 8/13/2018...

  • Page 157: Intensity Of Flame Qra7/Qri (Lme75) Or Lfs1 (Lme76)

    16.4.3 Intensity of flame QRA7/QRI (LME75) or LFS1 (LME76)  Note! This display is only possible when not in lockout position.   Press to display the flame signal amplifier. The signal lamp lights up green. The display shows FL.2.  ...

  • Page 158: Display Of Preset Output

    The value is now displayed for 2 minutes. The signal lamp lights up green. > 3 s The normal display appears again once this time has elapsed. Display: Value 57, point . flashes. 158/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 16 Operation via internal LED display 8/13/2018...

  • Page 159: Manual Load Change (Depending On The Pme75/Pme76 And Respective Parameterization)

     program sequence for modulating operation via analog preset output and with connected actuator with ASZ for position feedback to the LME75/LME76. Press to access the display for the relative actual position of the actuator and/or the relative actual speed of the PWM fan motor.
  • Page 160 (Escape) to return to normal operation. Display: oP When manual adjustment is completed, the actuator or PWM fan motor returns to the analog preset output. 160/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 16 Operation via internal LED display 8/13/2018...
  • Page 161 Manual adjustment mode remains active until Escape switches the LME75/LME76 back to normal operation or until the LME75/LME76 is reset via mains ON/OFF. This means that – in the case of a new heat request and after startup – the actuator or the PWM fan motor is...

  • Page 162: Initial Startup With A New Pme75/Pme76 Or When Replacing The Pme75/Pme76

    > 3 s Note! The data download will not start if you press < 3 seconds. To start the restore process again, the LME75/LME76 must be reset by switching the mains  ON/OFF.     The option is also available to press (Escape) as described in chapter 16.8 (Manual restore) to activate a...
  • Page 163 Alternately automatically in the lockout position (Loc 138) and must be reset for operation. Press for > 1 second to reset the LME75/LME76. Display OFF > 1 s Warning! On first startup or after exchange of the PME75/PME76, the sequence of functions and parameter settings must be checked upon completion of the restore process.

  • Page 164: Manual Backup

    The display shows that the data exchange has ended. Display appears for 2 minutes or can be finished by pressing  OFF is displayed when the backup process is complete Pressing (for > 1 second) resets the LME75/LME76. > 1 s Display OFF  Note! Backing up is recommended after changing parameters.

  • Page 165: Error During Backup Process

    Er3 are displayed alternately. Alternately For meaning and a possible cause, refer to chapter 17 “Error code list”.  Note! The backup process saves all settings and parameters from the LME75/LME76 memory to the PME75/PME76. 165/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en...

  • Page 166: Manual Restore

    End and rSt are displayed alternately. Alternately The display shows that the data exchange has ended. The signal lamp lights up red. After 2 minutes, the LME75/LME76 changes to Loc 138  166/177 Smart Infrastructure Basic Documentation LME75…/LME76…...
  • Page 167 After the restore process, the LME75/LME76 is  Alternately automatically in the lockout position (Loc 138) and must be reset for operation. Press for > 1 second to reset the LME75/LME76. Display OFF > 1 s 167/177 Smart Infrastructure Basic Documentation LME75…/LME76…...

  • Page 168: Error During Restore Process

    The restore process writes all settings and parameters from the PME75/PME76 to the internal memory of the LME75/LME76. As part of this process, it is possible that previous program sequences, parameters, and settings in the internal memory of the LME75/LME76 will be overwritten.

  • Page 169: Error Code List

    Valve proving fault in fuel valve V1 Fuel valve V1 leaking Loc: 13 Valve proving fault in fuel valve V2 Fuel valve V2 leaking Loc: 14 POC/CPI fault Fault valve closing control POC 169/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 17 Error code list 8/13/2018...
  • Page 170 PWM fan motor fault  Low-fire = 0 rpm  Maximum speed = 0 rpm One or more parameters are violating the Loc: 227 PWM fan motor fault minimum/maximum limit 170/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 17 Error code list 8/13/2018...
  • Page 171 Program sequence of PME75/PME76 does not rSt Er1 PME75/PME76 and LME75/LME76 match the LME75/LME76 during restore process Error in compatibility between Hardware of LME75/LME76 does not match the rSt Er2 PME75/PME76 and LME75/LME76 PME75/PME76 during restore process  PME75/PME76 faulty ...

  • Page 172: Unit History

    18 Unit history Software version 02.99  Current software version Software version 03.00  Changed control of the alarm terminal in case of contact position errors of the output contacts 172/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 18 Unit history 8/13/2018...
  • Page 173 Operation, indication, diagnostics direct display ......143 ........... 101 Parameters without index, with Preconditions for startup ..99 no direct display ...... 145 Resetting the burner control .. 100 173/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 18 Unit history 8/13/2018...
  • Page 174 Indication and diagnostics ..12 Type summary ......18 System makeup / Description of LME75 functions ........10 AGG9 pin assignment ....47 P  LME75 / LME76 PME75/PME76 X7-01 / X7-04 ......95 Type summary ..... 14, 16 LME75/LME76 Q  Digital inputs......68 Digital outputs ......
  • Page 175 SQN70/SQN71 Earthing ........37 Type summary ......20 Introduction ........ 36 SQN72 Terminals ........36 Type summary ......20 X  Startup ..........49 X10-05 Flame safeguard test ....79 175/177 Smart Infrastructure Basic Documentation LME75…/LME76… CC1P7156en 18 Unit history 8/13/2018...

  • Page 176: Table Of Figures

      Figure 12: Description of terminal X56 / X65 / X66 / X76 ..........47   Figure 13: Assignment of terminals for LME75  AGG9 ..........48   Figure 14: Assignment of terminals for LME76  AGG9 ..........49  ...
  • Page 177 Figure 55: Service level ....................127   Figure 56: Meaning of display and buttons ..............151   Siemens AG Smart Infrastructure © 2020 Siemens AG Smart Infrastructure Berliner Ring 23 Subject to change! 76437 Rastatt, Germany Tel. +49 (7222) 784-2396 www.siemens.com...

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