Page 1 LME7… Burner control Basic Documentation The LME7… and this Basic Documentation are intended for use by OEMs which integrate the burner controls in their products. Software version 02.00 Building Technologies Division CC1P7105en Infrastructure & Cities Sector 29.11.2011...
Page 2 2/245 Building Technologies Division Basic Documentation LME7… CC1P7105en Infrastructure & Cities Sector Safety notes 29.11.2011...
Page 3 Supplementary documentation User Documentation LME73.000.../PME73.840............A7105 Environmental Product Declaration LME… .............E7105 Environmental Product Declaration PME…............E7105.1 Data Sheet LME7…....................N7105 Product Range Overview LME…................Q7101 3/245 Building Technologies Division Basic Documentation LME7… CC1P7105en Infrastructure & Cities Sector Safety notes 29.11.2011...
Page 4 4/245 Building Technologies Division Basic Documentation LME7… CC1P7105en Infrastructure & Cities Sector Safety notes 29.11.2011...
Page 5: Table Of Contents
Contents Safety notes....................13 Warning notes ....................13 Mounting notes ....................15 Installation notes.................... 16 Electrical connection of flame detectors ............17 Commissioning notes ..................18 Standards and certificates ................19 Lifetime ......................19 Disposal notes ....................19 Typographical conventions................20 1.9.1 Safety notes....................
Page 6 Dimensions....................37 Function......................38 Preconditions for burner startup ..............38 Undervoltage ....................38 Controlled intermittent operation ..............38 Control sequence in the event of fault ............39 Resetting the burner control ................39 Limitation of repetitions (can be parameterized) (depending on parameter 240) ....................
Page 7 PME71.901....................63 12.1 Program sequence PME71.901..............63 12.2 Connection diagrams for fuel train applications (examples)......65 12.2.1 Gas direct ignition (G), 1-stage..............65 12.2.2 Gas direct ignition (G), 1-stage and valve proving ........65 12.2.3 Gas valve proving..................66 Valve proving with separate pressure switch ..........
Page 8 Valve proving with separate pressure switch ..........97 Valve proving – calculation of leakage rate ........... 98 15.3 Connection diagram for LME73.000... with actuator SQM4... (example 1) ........................99 15.4 Time table and settings for program sequence PME73.810....... 100 15.5 LME73.000...: Inputs and outputs/internal connection diagram ....
Page 9 18.2.2 Gas pilot ignition 2 (Gp2), 1-stage, without valve proving, simultaneously ignition burner ..............135 18.2.3 Gas pilot ignition 1 (Gp1), 1-stage, with valve proving, alternate burning ignition burner................. 136 18.2.4 Gas direct ignition 1 (G), 1-stage, with valve proving ........136 18.2.5 Valve proving of gas valves.................
Page 10 21.4.4 Actuator output X2-09.................. 165 21.4.5 Setting the maximum running time of the actuator (P259/P260 timeout)......................165 21.5 Multistage/modulating mode via 3-position step input X5-03 ...... 166 21.5.1 Maximum possible resolution ..............166 21.6 Modulating mode via analog input signal X65 ..........166 21.6.1 Maximum possible resolution ..............
Page 11 23.7.2.3. Intensity of flame ..................182 23.7.2.4. End of service level ..................182 23.8 Parameter level ................... 183 23.8.1 Entering the password................. 184 23.8.2 Changing the heating engineer's password ..........186 23.8.3 Changing the OEM's password ..............187 23.8.4 Backup......................188 23.8.5 Restore ......................
Page 12 25.8.2 Reset ......................218 Error code list with operation via internal LED..........219 PWM settings ....................221 27.1 Relevant parameters ................... 221 27.2 PWM control parameters................223 27.3 PWM safety parameters ................224 27.4 Initial PWM parameter settings..............225 27.4.1 Initial settings of PWM basic parameters ............
Page 13: Safety Notes
The LME7... are safety devices! Do not open, interfere with or modify the unit. Siemens does not assume responsibility for damage resulting from unauthorized interference! Additional safety notes contained in other chapters of this document must be observed as well! ...
Page 14 certain that the application will run safely in compliance with legal requirements. If not observed, there is a risk that safety functions will be impaired  Only LME71.901... When the fan operates on permanent phase, it must be ensured that there is a safe electrical separation between mains voltage and PWM/Hall input/output.
Page 15: Mounting Notes
Mounting notes  Ensure that the relevant national safety regulations are complied with  In the geographical areas where DIN regulations are in use, the requirements of VDE must be satisfied, especially DIN/VDE 0100, 0550 and DIN/VDE 0722  The LME7... basic unit must be secured with fixing screws M4 (UNC32) or M5 (UNC24), observing a maximum tightening torque of 1.8 Nm and using all 3 fixing points.
Page 16: Installation Notes
Since the BCI has no safe separation from mains voltage, the signal cable AGV50... between LME7… and AZL2…, or LME7… and OCI410…, must conform to certain specifications. Siemens has specified the signal cable AGV50... for use under the burner hood (cable supplied by Hütter; see Technical data). When using signal cables of other manufacture, Siemens’...
Page 17: Electrical Connection Of Flame Detectors
Electrical connection of flame detectors It is important to achieve practically disturbance- and loss-free signal transmission:  Never run the detector cable together with other cables – Line capacitance reduces the magnitude of the flame signal – Use a separate cable ...
Page 18: Commissioning Notes
Commissioning notes Prior to commissioning the system, the following points must be checked:  Correct assignment of the valves to the valve outputs at the LME7...  Correct setting of the time parameters, especially the safety and prepurge times  Correct functioning of the flame detector in the event of loss of flame during operation (including the response time), with extraneous light, during the prepurge time and, when there is no establishment of flame, at the end of the ignition safety...
Page 19: Standards And Certificates
1.6 Standards and certificates Conformity to EEC directives - Electromagnetic compatibility EMC (immunity) 2004/108/EC - Directives for gas-fired appliances 2009/142/EC - Low-voltage directive 2006/95/EC ISO 9001: 2010 ISO 14001: 2010 Cert. 00739 Cert. 38233 Only for AC 120 V versions Identification code to EN 298 chapter 4 ...
Page 20: Typographical Conventions
The device 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. The product can only function correctly and safely if shipped, stored, set up and installed correctly, and operated and maintained as specified.
Page 21: System Makeup/Function Description
System makeup/function description The LME7... is a microprocessor-based burner control with matching system components for the control and supervision of forced draft burners of medium to high capacity. LME7… are used for the startup and supervision of 1- or 2-stage forced draft burners in intermittent operation.
Page 22: Features
The LME7... system components (display and operating unit AZL2...) are connected directly via BCI to the LME7... basic unit. All safety-related digital inputs and outputs of the system are monitored by a contact feedback network. For intermittent operation in connection with the LME7..., the ionization probe and, optionally, the flame detector QRA2..., QRA4.U or QRA10...
Page 23: Type Summary
Type summary 3.1 Burner controls Microprocessor-based burner control for single-/dual-fuel burner of medium to large capacity, one actuator. Type ● ● Mains voltage AC 120 V ● ● ● Mains voltage AC 230 V ● ● ● ● ● Gas pressure switch-min/POC ●...
Page 24: Program Module
3.2 Program module Example: Typenbezeichnung ● ● ● ● ● ● ● ● Mains voltage AC 120 V ● ● ● For use with LME71.000A... For use with LME72.000A... ● ● ● ● ● For use with LME73.000A... ● ● ●...
Page 25 Example: Typenbezeichnung ● ● ● ● ● ● ● ● ● ● Mains voltage AC 230 V ● ● ● For use with LME71.000A... ● ● For use with LME72.000A... ● ● ● ● ● For use with LME73.000A... ● ●...
Page 26: External Display And Operating Units
1 m, pack of 10 3.4 Flame detectors QRA2… Flame detector for use with Siemens burner controls, for the supervision of gas flames, yellow-/blue-burning oil flames and for ignition spark proving. Plastic insulated housing, metalized to prevent static charging caused by the air flow from the fan.
Page 27: Actuators
3.5 Actuators SQN3… Electromotoric actuators for air dampers and control valves of oil and gas burners of small to medium capacity. Holding torque:/running time 0,8 Nm/4,5 s until 3 Nm/30 s See Data Sheet N7808 SQN7… Electromotoric actuators for air dampers and control valves of oil and gas burners of small to medium capacity.
Page 28: Dummy Plugs For Rj11
3.7 Dummy plugs for RJ11 Dummy plug For 6-pole modular connector (RJ11) Supplier recommendation: Molex, order no.: 085 999 3256 3.8 Connector sets for LME7... AGG3.710 Connector set complete for LME7… RAST5 and RAST3.5 Single packs AGG3.720 10 standard connector sets complete for LME7… Example: X5-03 RAST5 and RAST3.5 Single packs...
Page 29: Test Case And Accessories
3.10 Test case and accessories KF8895.1A9 Test case for LME...  For simulations of burner functions as startups, sequence of operations in connection with the specified burner controls  For check and test purposes of burner controls  For operation in laboratories by expert qualified personnel See User Manual CC1U7993 AGV8895.01...
Page 30: Technical Data
Technical data 4.1 Basic unit LME7... Mains voltage AC 120 V AC 230 V Mains frequency 50/60 Hz 50/60 Hz External primary fuse Max. 6.3 A (slow) Max. 6.3 A (slow) Power consumption <10 W, typical <10 W, typical Safety class I with parts according to II and III to DIN EN 60730-1 Degree of protection...
Page 31: Terminal Rating Outputs
4.3 Terminal rating Outputs Total contact loading:  Rated voltage AC 120 V AC 230 V 50/60 Hz 50/60 Hz  Unit input current X3-04 Max. 5 A Max. 5 A (safety loop) from: - Fan motor contactor - Ignition transformer - Fuel valves Individual contact loading: Fan motor contactor X2-01 pin 3...
Page 32: Cable Lengths
4.4 Cable lengths  Mains supply line Max. 100 m (100 pF/m)  Display, BCI For use under the burner hood or in a control panel Max. 1 m (100 pF/m)  Load controller X5-03 Max. 30 m (100 pF/m) ...
Page 33: Signal Cable Agv50
4.7 Signal cable AGV50... 4.7.1 AZL2...  BCI Signal cable Color white Unshielded Conductor 4 x 0.141 mm² With jack RJ11 Cable length - AGV50.100 Supplier (alternative) Recommendation: Hütter http://www.hkt- netzwerktechnik.at/index.htm Location Under the burner hood (arrangements for SKII EN60730-1 additionally required) 4.8 Dummy plug for RJ11 Dummy plug For 6 pin modular plug (RJ11)
Page 34: Flame Supervision
4.10 Flame supervision 4.10.1 Ionization probe No-load voltage at terminal ionization AC 300 V probe (X10–05, terminal 2) Warning!  The ionization probe must be protected against electric shock hazard!  When monitoring ionization currents in earth-free mains, connect terminal X10-05/1 to burner ground Short-circuit current Max.
Page 35 Ionization probe Measuring circuit for detector current measurement LME7... X10-05/2 X10-05/1 Figure 4: Measuring circuit for ionization probe Legend Electrolytic condenser 100...470 µF; DC 10...25 V Ionization probe Microammeter Ri max. 5,000  Warning! Simultaneous operation of QRA... and ionization probe is not permitted! If not observed, there is a risk of impairment of safety functions.
Page 36: Flame Detector Qra2
4.10.2 Flame detector QRA2.../QRA4.U/QRA10... Caution! If flame detectors QRA2…/QRA4.U/QRA10... are used for flame supervision with the LME7..., it must be ensured that the burner control is permanently connected to power (conforming to EN 298), thus enabling the system to detect flame detector failures during startup and shutdown.
Page 37: Dimensions
Dimensions Dimensions in mm LME7... 7105m02/0510 Figure 6: Dimensions of LME7... 37/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 5 Dimensions 29.11.2011...
Page 38: Function
Function 6.1 Preconditions for burner startup  Burner control must be reset  All contacts in the line are closed, there is a request for heat  No undervoltage  Air pressure switch or POC must be in its no-load position, or Dbr1 is connected to X2-02 (depending on program sequence) ...
Page 39: Control Sequence In The Event Of Fault
6.4 Control sequence in the event of fault If lockout occurs, the outputs for the fuel valves, the burner motor and the ignition equipment are immediately deactivated (<1 second). Cause Response Restart Mains voltage failure Safety shutdown Voltage below undervoltage threshold Restart Voltage above undervoltage threshold Extraneous light before safety time...
Page 40: Limitation Of Repetitions (Can Be Parameterized)
6.6 Limitation of repetitions (can be parameterized) (depending on parameter 240) 6.6.1 Parameter 240/240.00 If the flame is lost during operation, a maximum 1 repetition per controlled startup can be performed via the temperature thermostat or pressurestat, or else lockout will be initiated.
Page 41: Operation, Indication, Diagnostics
Operation, indication, diagnostics 7.1 Operation The lockout reset button (info button) is the key operating element for resetting the burner control and for activating/deactivating the diagnostics functions. Yellow The multicolor signal lamp is the key indicating element for visual Green diagnostics.
Page 42: Diagnostics Of Cause Of Fault
7.3 Diagnostics of cause of fault After lockout, the red fault signal lamp remains steady on. In that condition, visual diagnostics of cause of fault according to the error code table can be activated by pressing the lockout reset button (info button) for more than 3 seconds. Pressing the lockout reset button (info button) again for at least 3 seconds, interface diagnostics will be activated.
Page 43 Error code table Red blink code of fault signal lamp Possible cause 2 x blinks No establishment of flame at the end of the safety time - Faulty or soiled fuel valves - Faulty or soiled flame detector - Poor adjustment of burner, no fuel - Faulty ignition equipment 3 x blinks Air pressure switch faulty...
Page 44: Inputs/Outputs
Inputs/outputs Figure 8: Inputs/outputs 44/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 8 Inputs/outputs 29.11.2011...
Page 45: Basic Unit
Basic unit 9.1 Description of inputs and outputs This section covers the key features of the basic unit’s inputs and outputs. For exact use of the inputs and the activation of outputs, see chapter Sequence diagrams. LME... Flame signal input and flame detector X10–06 QRA...
Page 46: Digital Input
Digital input 9.2.1 Safety Loop X3–04, terminal 1 and 2 Input for connection of the safety loop. When any of the series-connected contacts included in the loop opens, power supply to the fuel valves, the fan and the ignition equipment is instantly cut. The safety loop includes the following components: External burner switch (ON/OFF) ...
Page 47: Air Pressure Switch X3-02
9.2.3 Air pressure switch X3–02 Input for connection of an air pressure switch. Air pressure is anticipated when the fan is switched on. If there is no air pressure signal, the system initiates lockout. The air pressure switch must have an NO contact. If no air pressure switch is required (e.g.
Page 48: Pme71.401
10 PME71.401... 10.1 Program sequence PME71.401...  For connection diagram fuel train (G) Standby Startup Operation Shutdown 2nd stage 1st stage t3 t3n Phase number AZL2... 21 22 22 30 30 38 40 42 44 oP:P2 oP:P1 74 10 Phase number 7 segment in the LME... 21 22 22 30 30 38 40 42 44 74 10 224 225...
Page 49 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP1/oP:P1 Operation of first stage oP2/oP:P2 Operation of 2nd stage Home run Safety valve ON, air pressure switch in no-load position Check if POC is closed Part 1: Fan motor ON Part 2: Specified time air pressure switch Message (timeout), stabilization of air pressure switch...
Page 50: Connection Diagrams For Fuel Train Applications (Examples)
10.2 Connection diagrams for fuel train applications (examples) 10.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME71.000... X7-04 Figure 14: Connection diagram fuel train gas direct ignition (G), 1-stage 10.2.2 Gas direct ignition (G), 2-stage Program Gas direct 2-stage LME71.000...
Page 51: Time Table And Settings For Program Sequence Pme71.401
10.3 Time table and settings for program sequence PME71.401... Type Times in seconds PME71.401... P225 P226 P257 P230 P234 P224 max. min. min. approx. min. min. approx. Requirements Factory setting t3n+0.45 29.106+2.1 2.058 2.205+0.3 8.232 13.818 Max. 1237+2.1 37.485 13.23+0.3 74.97 1237 13.818...
Page 52: Lme71.000
10.4 LME71.000..: Inputs and outputs/internal connection diagram Figure 16: LME71.000...: Inputs and outputs/internal connection diagram 52/245 Building Technologies Division Basic Documentation LME7... CC1P7105de Infrastructure & Cities Sector 10 PME71.401... 29.11.2011...
Page 53: Parameter List Pme71.401
10.5 Parameter list PME71.401... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 54 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 55: Pme71.402
11 PME71.402... 11.1 Program sequence PME71.402...  For connection diagram fuel trains (G) Gp1/1) Shutdown Standby Startup Operation Repetition in the event of loss of flame during operation (depending on t3 t3n parameter 240) 21 22 22 30 30 38 40 42 44 50 50 oP:P1 74 10...
Page 56 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP1/oP:P1 Operation Home run Safety valve ON, air pressure switch in no-load position Check if POC is closed Part 1: Fan motor ON Part 2: Specified time air pressure switch Message (timeout), stabilization of air pressure switch Part 1: Prepurge time without flame simulation test Part 2: Prepurge time with flame simulation test (2.1 seconds)
Page 57: Connection Diagrams For Fuel Train Applications (Examples)
11.2 Connection diagrams for fuel train applications (examples) 11.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME71.000... X7-01 X7-04 Dbr2 Figure 18: Connection diagram fuel train gas direct ignition (G), 1-stage 11.2.2 Gas pilot ignition 1 (Gp1/1), 1-stage Program Gp1/1 Gas pilot 1-stage...
Page 58: Time Table And Settings For Program Sequence Pme71.402
11.3 Time table and settings for program sequence PME71.402... Type Times in seconds PME71.402... P225 P226 P257 P230 P234 P231 P224 max. approx. min. min. approx. min. min. approx. approx. Requirements Factory setting t3n+0.45 29.106+2.1 3.087 2.205+0.3 3.234 19.404 2.646 13.818 t9+1 Max.
Page 59: Lme71.000
11.4 LME71.000..: Inputs and outputs/internal connection diagram Figure 20: LME71.000...: Inputs and outputs/internal connection diagram 59/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 11 PME71.402... 29.11.2011...
Page 60: Parameter List Pme71.402
11.5 Parameter list PME71.402... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 61 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Burner control Specified time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 62 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 63: Pme71.901
12 PME71.901... 12.1 Program sequence PME71.901...  For connection diagram fuel train (G) without valve proving  For connection diagram fuel train (G) with valve proving Standby Startup Operation Shutdown Valve proving if parameter P241 =1 (ON) Can be parameterized t11 t10 t12 t3 t3n td4 td1 td3 td2...
Page 64 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request Part 1: Request load controller OPEN Part 2: Modulation of fan motor speed toward high-fire Part 3: High-fire reached Part 4: Request load controller CLOSED Part 5: Modulation of fan motor speed toward low-fire Part 6: Low-fired reached Settling time, fan motor standby speed Safety valve ON, air pressure switch in no-load position...
Page 65: Connection Diagrams For Fuel Train Applications (Examples)
12.2 Connection diagrams for fuel train applications (examples) 12.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME71.000... X7-01 X7-04 Figure 22: Connection diagram fuel train gas direct ignition (G), 1-stage 12.2.2 Gas direct ignition (G), 1-stage and valve proving Program Gas direct 1-stage, with valve proving LME71.000...
Page 66: Gas Valve Proving
12.2.3 Gas valve proving Valve proving is dependent on parameter 241. It is employed to detect leaking gas valves and, if necessary, to prevent the valves from opening or ignition from being switched on. Lockout is initiated. Valve proving with separate pressure switch Step 1: td4 –...
Page 67: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. If this is not observed, there is a risk of loss of safety functions.
Page 68: Time Table And Settings For Program Sequence Pme71.901
12.3 Time table and settings for program sequence PME71.901... Type Times in seconds P225 P234 PME71.901... P226 P257 P230 P224 max. min. min. min. max. min. min. Requirement Factory setting t3n+0.45 19.404+2.1 3.087 2.205+0.3 15.582 4.851 13.818 58.212 58.212 10.29 2.646 Max.
Page 69: Lme71.000
12.4 LME71.000...: Inputs and outputs/internal connection diagram Figure 25: LME71.000...: Inputs and outputs/internal connection diagram 69/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 12 PME71.901... 29.11.2011...
Page 70: Parameter List Pme71.901
12.5 Parameter list PME71.901... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 71 Parameter- Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Burner control Special time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 72 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Ratio control 503.00 No-flame speeds PWM fan: Standby speed Edit 0 rpm 9000 rpm 10 rpm 0 rpm 503.01 No-flame speeds PWM fan: Purge speed 800 rpm 9000 rpm...
Page 73 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Power setting Number of pulses per revolution Edit Settling time for assessment of speed Edit 1.029 s 2.058 s 0.147 s 2,058 s 650.00...
Page 74 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Error history 701.00 Current error: Error code Read only Service 701.01 Current error: Startup meter reading 999999 Service Read only 701.02 Current error: MMI phase Service...
Page 75: Pme72.521
13 PME72.521... 13.1 Program sequence PME72.521...  For connection diagram fuel trains (G) Gp1/1) Standby Startup Operation Shutdown t11 t10 t12 t3 t3n Phase number 21 22 24 22 30 30 36 38 40 42 44 oP: P1 72 74 10 Display and operation unit parameter number LED permanent LED flashing...
Page 76 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP:P1 Part 1: Request load controller OPEN Part 2: Switching point fuel valve 2a (2nd stage) ON by actuator Part 3: High-fire reached Part 4: Request load controller CLOSE Part 5: Switching point fuel valve 2a (2nd stage) OFF by actuator Part 6: Low-fire reached Actuator travels to the CLOSED position, home run...
Page 77: Connection Diagrams For Fuel Train Applications (Examples)
13.2 Connection diagrams for fuel train applications (examples) 13.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME73.000... X7-01 X7-04 Figure 27: Connection diagram fuel train gas direct ignition (G), 1-stage 13.2.2 Gas direct ignition 1 (Gp1/1), 2-stage Program Gp1/1 Gas direct 1, 2-stage LME72.000...
Page 78: Connection Diagram For Lme72.000
13.3 Connection diagram for LME72.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME72.521... 1-/2-stage modulating Without pilot ignition Without valve proving X2-09 Figure 29: Connection diagram for LME72.000...
Page 79: Connection Diagram For Lme72.000
13.4 Connection diagram for LME72.000... without actuator SQM4... Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME72.521... 1-stage Without actuator With/without valve proving X2-09 Figure 30: Connection diagram for LME73.000... without actuator SQM4... ...
Page 80: Time Table And Settings For Program Sequence Pme72.521
13.5 Time table and settings for program sequence PME72.521... Type Times in seconds PME72.521... max. min. min. approx. min. min. approx. approx. approx. Requirement Factory setting Max. 0.45 0.45 Min. Step size Legend Waiting time Interval: End of safety time – load controller release Safety time Postpurge time Prepurge time...
Page 81: Lme72.000
13.6 LME72.000..: Inputs and outputs/internal connection diagram Figure 31: LME72.000...: Inputs and outputs/internal connection diagram 81/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 13 PME72.521... 29.11.2011...
Page 82: Parameter List Pme72.521
13.7 Parameter list PME72.521... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 83 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Process data Normalized speed Read only 100% 0.01% Service Mains voltage Read only LME72.000A1: 175 V Service LME72.000A2: 350 V Flame intensity Read only 100%...
Page 84: Pme72.541
14 PME72.541... 14.1 Program sequence PME72.541...  For connection diagram fuel trains (G) Gp1/1) Standby Startup Operation Shutdown t11 t10 t12 t3 t3n 21 22 24 22 30 30 36 38 40 42 44 50 50 72 74 10 Phase number oP: P1 Display and operation unit parameter number LED permanent...
Page 85 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP:P1 Part 1: Interval: Pilot valve OFF – release of load controller Part 2: Request load controller OPEN Part 3: Modulation of actuator toward high-fire Part 4: High-fire reached Part 5: Request load controller CLOSE Part 6: Modulation of actuator toward low-fire Part 7: Low-fire reached...
Page 86: Connection Diagrams For Fuel Train Applications (Examples)
14.2 Connection diagrams for fuel train applications (examples) 14.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME72.000... X7-01 X7-04 Figure 33: Connection diagram fuel train gas direct ignition (G), 1-stage 14.2.2 Gas pilot ignition 1 (Gp1/1), 1-stage Program Gp1/1 Gas pilot 1-stage LME72.000...
Page 87: Connection Diagram For Lme72.000
14.3 Connection diagram for LME72.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME72.541... 1-stage modulating With pilot ignition Without valve proving X2-09 Figure 35: Connection diagram for LME72.000...
Page 88: Connection Diagram For Lme72.000
14.4 Connection diagram for LME72.000... without actuator SQM4... Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME72.541... 1-stage With pilot ignition Without actuator With/Without valve proving X2-09 Figure 36: Connection diagram for LME73.000...
Page 89: Time Table And Settings For Program Sequence Pme72.541
14.5 Time table and settings for program sequence PME72.541... Type Times in seconds PME72.541... max. min. min. approx. min. min. min. approx. approx. approx. approx. Requirement t9+1 Factory setting Max. 0.45 0.45 Min. Step size Legend Waiting time Postpurge time Safety time Interval: Fuel valve 1 ON - pilot valve OFF Prepurge time...
Page 90: Lme72.000
14.6 LME72.000..: Inputs and outputs/internal connection diagram Figure 37: LME72.000...: Inputs and outputs/internal connection diagram 90/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 14 PME72.541... 29.11.2011...
Page 91: Parameter List Pme72.541
14.7 Parameter list PME72.541... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Interne Parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 92 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 93: Pme73.810
15 PME73.810... 15.1 Program sequence PME73.810...  For connection diagram fuel train (G) without valve proving  For connection diagram fuel train (G) with valve proving  For connection diagram actuator application example 1 Standby Startup Operation Shutdown Valve proving setzung If parameter P241 =1 (ON)
Page 94 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request Part 1: Request load controller OPEN Part 2: Switching point fuel valve 2a (2nd stage) ON by actuator Part 3: High-fire reached Part 4: Request losf controller CLOSE Part 5: Switching point fuel valve 2a (2nd stage) OFF by actuator Part 6: Low-fire eached Actuator travels to the CLOSED position, home run...
Page 95: Connection Diagrams For Fuel Train Applications (Examples)
15.2 Connection diagrams for fuel train applications (examples) 15.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME73.000... X7-01 X7-04 Figure 39: Connection diagram fuel train gas direct ignition (G), 1-stage 15.2.2 Gas direct ignition (G), 2-stage Program Gas direct 2-stage LME73.000...
Page 96: Gas Direct Ignition (G), 1-Stage, With Valve Proving
15.2.3 Gas direct ignition (G), 1-stage, with valve proving Program Gas direct 1-stage, with valve proving LME73.000... X7-02 X7-04 Figure 41: Connection diagram fuel train gas direct ignition (G), 1-stage, with valve proving 15.2.4 Gas direct ignition (G), 2-stage, with valve proving Program Gas direct 2-stage, with valve proving LME73.000...
Page 97: Gas Valve Proving
15.2.5 Gas valve proving Valve proving is dependent on parameter 241. It is employed to detect leaking gas valves and, if necessary, to prevent the valves from opening or ignition from being switched on. Lockout is initiated. Valve proving with separate pressure switch Step 1: td4 –...
Page 98: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. It must be ensured that the 2 test times are correctly set. It is to be checked whether the gas required for the test may be fed into the combustion chamber (on the relevant application).
Page 99: Connection Diagram For Lme73.000
15.3 Connection diagram for LME73.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.810... 1-/2-stage modulating Without pilot ignition With/without valve proving Terminal X66 on LME73.000...
Page 100: Time Table And Settings For Program Sequence Pme73.810
15.4 Time table and settings for program sequence PME73.810... Type Times in seconds P225 P234 PME73.810... P226 P257 P230 P224 P259 P260 max. min. approx. min. approx. approx. approx. min. max. min. min. Requirement Factory setting t3n+0.45 29.106+2.1 6.174 2.205+0.3 9.408 19.404 13.818...
Page 101: Lme73.000
15.5 LME73.000...: Inputs and outputs/internal connection diagram Figure 45: LME73.000...: Inputs and outputs/internal connection diagram 101/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 15 PME73.810... 29.11.2011...
Page 102: Parameter List Pme73.810
15.6 Parameter list PME73.810... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 103 Parameter- Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Burner control Special time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 104 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Power setting Analog input (feedback potentiometer ASZxx.3x required) Edit 0 = 3-position step input 1 = 0...10 V 2 = 0...135  3 = 0...20 mA 4 = 4...20 mA with lockout at I <4 mA 5 = 4...20 mA...
Page 105: Pme73.820
16 PME73.820... 16.1 Program sequence PME73.820...  For connection diagram fuel train (G) Standby Startup Operation Shutdown Valve proving If parameter P241.00 =1 (ON) Can be parameterized t11 t10 t12 t3 t3n td4 td1 td3 td2 Phase number AZL2... 21 22 24 22 30 30 36 38 40 42 44 oP:P1 72 74 10 80 81 82 83...
Page 106 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP1/oP:P1 Part 1: Request load controller OPEN Part 2: Switching point fuel valve 2a (2nd stage) ON by actuator Part 3: High-fire reached Part 4: Request load controller CLOSE Part 5: Switching point fuel valve 2a (2nd stage) OFF by actuator Part 6: Low-flame reached Actuator travels to the CLOSED position, home run...
Page 107: Connection Diagrams For Fuel Train Applications (Examples)
16.2 Connection diagrams for fuel train applications (examples) 16.2.1 Gas direct ignition (G), 1-stage Program Gas direct, 1-stage LME73.000... X7-04 Figure 47: Connection diagram fuel train gas direct ignition (G), 1-stage 16.2.2 Gas direct ignition 1 (G), 2-stage Program Gas direct 1, 2-stage LME73.000...
Page 108: Gas Direct Ignition 1 (G), 1-Stage, With Valve Proving
16.2.3 Gas direct ignition 1 (G), 1-stage, with valve proving Program Gas direct 1-stage, with valve proving LME73.000... X7-02 X7-04 Figure 49: Connection diagram fuel train gas direct ignition 1 (G), 1-stage, with valve proving 16.2.4 Gas direct ignition (G), 2-stage, with valve proving Program Gas direct 2-stage, with valve proving LME73.000...
Page 109: Gas Valve Proving
16.2.5 Gas valve proving Valve proving is dependent on parameter 241. It is employed to detect leaking gas valves and, if necessary, to prevent the valves from opening or ignition from being switched on. Lockout is initiated. Valve proving with separate pressure switch Step 1: td4 –...
Page 110: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. It must be ensured that the 2 test times are correctly set. It is to be checked whether the gas required for the test may be fed into the combustion chamber (on the relevant application).
Page 111: Connection Diagram For Lme73.000
16.3 Connection diagram for LME73.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.820... 1-/2-stage modulating Without pilot ignition With/without valve proving X2-09 Figure 52: Connection diagram for LME73.000...
Page 112: Connection Diagram For Lme73.000
16.4 Connection diagram for LME73.000... without actuator SQM4... Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.820... 1-stage Without actuator With/without valve proving X2-09 Figure 53: Connection diagram for LME73.000... without actuator SQM4... ...
Page 113: Time Tables And Settings For Program Sequence Pme73.820
16.5 Time tables and settings for program sequence PME73.820... Type Times in seconds P225 P234 PME73.820... P226 P257 P230 P224 P259 P260 max. min. approx. min. approx. approx. approx. min. max. min. min. Requirements Factory setting t3n+0.45 29.106+2.1 6.174 2.205+0.3 9.408 19.404 13.818...
Page 114: Lme73.000
16.6 LME73.000...: Inputs and outputs/internal connection diagram Figure 54: LM73.000...: Inputs and outputs/internal connection diagram 114/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 16 PME73.820... 29.11.2011...
Page 115: Parameter List Pme73.820
16.7 Parameter list PME73.820... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 116 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Burner control Specified time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 117 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 118: Pme73.830
17 PME73.830... 17.1 Program sequence PME73.830...  For connection diagram fuel trains (G) Gp1/1)/(Gp1/2) Standby Startup Operation Shutdown Valve proving If parameter P241.00 =1 (ON) Can be parameterized t11 t10 t12 t3 t3n td4 td1 td3 td2 Phase number 21 22 24 22 30 30 38 40 42 44 50 50 72 74 10 80 81 82 83...
Page 119 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP:xx Part 1: Request load controller OPEN Part 2: Modulation of actuator toward high-fire Part 3: High-fire reached Part 4: Request load controller CLOSE Part 5: Modulation of actuator toward low-fire Part 6: Low-fire reached oP:P1 Interval: Pilot valve OFF and release of load controller...
Page 120: Connection Diagrams For Fuel Train Applications (Examples)
Connection diagrams for fuel train applications (examples) 17.1.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME73.000... X7-01 X7-04 LME73.000... X2-09 Figure 56: Connection diagram fuel train gas direct ignition (G), 1-stage 17.1.2 Gas pilot ignition 1 (Gp1/1), 1-stage Program Gas pilot 1, 1-stage Gp1/1...
Page 121: Gas Pilot Ignition 1 (Gp1/2), 1-Stage, With Valve Proving
17.1.3 Gas pilot ignition 1 (Gp1/2), 1-stage, with valve proving Program Gp1/2 Gas pilot 1, 1-stage LME73.000... X7-01 X7-04 X7-02 Figure 58: Connection diagram fuel train gas pilot ignition 1 (Gp1/2), 1-stage, with valve proving 17.1.4 Gas direct ignition 1 (Gp1/2), 1-stage, with valve proving Program Gp1/2 Gas direct 1, 1-stage...
Page 122: Gas Valve Proving
17.1.5 Gas valve proving Valve proving is depending on parameter 241. This is valve proving designed to detect leaking gas valves and, if necessary, prevent the valves from opening or ignition from being switched on. Lockout is initiated. Valve proving with separate pressure switch Step 1: td4 –...
Page 123: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. It must be ensured that the 2 test times are correctly set. It is to be checked whether the gas required for the test may be fed into the combustion chamber (on the relevant application).
Page 124: Connection Diagram For Lme73.000
17.2 Connection diagram for LME73.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.830... 1-stage modulating With/without pilot ignition With/without valve proving Terminal X66 on LME73.000...
Page 125: Time Table And Settings For Program Sequence Pme73.830
17.3 Time table and settings for program sequence PME73.830... Type Times in seconds P225 P234 PME73.830... P226 P257 P230 P232 P231 P224 P259 P260 max. min. approx. min. min. approx. approx. approx. approx. min. max. min. min. Requirement t9+1 Factory setting t3n+0.45 29.106+2.1 6.174...
Page 126: Lme73.000
17.4 LME73.000...: Inputs and outputs/internal connection diagram Figure 62: LM73.000...: Inputs and outputs/internal connection diagram 126/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 17 PME73.830... 29.11.2011...
Page 127: Parameter List Pme73.830
17.5 Parameter list PME73.830... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 128 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Burner control Specified time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 129 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Power setting Analog input (feedback potentiometer ASZxx.3x required) Edit 0 = 3-position step input 1 = 0...10 V 2 = 0...135  3 = 0...20 mA 4 = 4...20 mA with lockout at I <4 mA 5 = 4...20 mA...
Page 130: Pme73.831
18 PME73.831… 18.1 Program sequence PME73.831…  For connection diagram fuel trains G/Gp1/Gp2 (without valve proving) Standby Startup Operation Shutdown Valve proving If parameter P241 =1 (ON) Can be parameterized t11 t10 t12 t3 t3n t12 t5 td4 td1 td3 td2 21 22 24 22 30 30 36 38 40 42 44 50 54 54 72 74 10 80 81 82 83...
Page 131 Standby Startup Operation Shutdown Valve proving *4 If parameter P241 =1 (ON) parametrierbar t11 t10 t12 t3 t3n t12 t5 td4 td1 td3 td2 oP:xx 21 22 24 22 30 30 36 38 40 42 44 50 54 72 74 10 80 81 82 83 Phase number (actual power in %)
Page 132 Standby Startup Operation Shutdown Vavle proving *4 If parameter P241 =1 (ON) Can be parameterized t12 t3 t3n t12 t5 td4 td1 td3 td2 21 22 24 22 30 30 36 38 40 42 44 50 54 54 72 74 10 80 81 82 83 Phase number 260 226 257...
Page 133 Standby Startup Operation Shutdown Valve proving *4 If parameter P241 =1 (ON) Can be parameterized t12 t3 t3n t12 t5 td4 td1 td3 td2 oP:xx 21 22 24 22 30 30 36 38 40 42 44 50 54 72 74 10 80 81 82 83 Phase number (actual power in %)
Page 134 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request Operation, modulating operation Interval to release of preset load controller (analog or 3-position step input) Undervoltage Safety loop open Extraneous light on burner startup (timeout/lockout after 30 seconds) Power ON/test phase (e.g.
Page 135: Connection Diagrams For Fuel Applications (Examples)
18.2 Connection diagrams for fuel applications (examples) 18.2.1 Gas direct ignition (G), 1-stage, without valve proving Program Gas direct 1-stage LME73.000... X2-02 Fuel valve control Operation X7-01: LME73.000... X7-04: V1 X7-02 X7-01 X7-04 Fig. 67: Connection diagram fuel application gas direct ignition (G), 1-stage, without valve proving 18.2.2 Gas pilot ignition 2 (Gp2), 1-stage, without valve proving, simultaneously ignition burner Program...
Page 136: Gas Pilot Ignition 1 (Gp1), 1-Stage, With Valve Proving, Alternate Burning Ignition Burner
18.2.3 Gas pilot ignition 1 (Gp1), 1-stage, with valve proving, alternate burning ignition burner Program Gas pilot 1, 1-stage LME73.000... X7-01 X7-04 X7-02 Fuel valve control Operation X7-01: PV X7-04: V1 X7-02: V2 Fif. 69: Connection diagram fuel application gas pilot ignition 1 (Gp1), 1-stage, with valve proving 18.2.4 Gas direct ignition 1 (G), 1-stage, with valve proving Program Gas direct 1, 1-stage...
Page 137: Valve Proving Of Gas Valves
18.2.5 Valve proving of gas valves Valve proving is dependent on parameter 241 and/or on the input of valve proving ON/OFF (X2-02). This is valve proving designed to detect leaking gas valves and, if necessary, prevent the valves from opening or ignition from being switched on. Lockout is initiated.
Page 138: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. It must be ensured that the 2 test times are correctly set. It is to be checked whether the gas required for the test may be fed into the combustion chamber (on the relevant application).
Page 139: Connection Diagram For Lme73.000
18.3 Connection diagram for LME73.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.831... 1-stage modulating With/without pilot ignition With/without valve proving Direction of rotation Type...
Page 140: Connection Diagram For Lme73.000
18.4 Connection diagram for LME73.000... with actuator SQM4... (example 2) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.831... 1-stage modulating With/without pilot ignition With/without valve proving Direction of rotation Type...
Page 141: Time Table And Settings For Program Sequence Pme73.831
18.5 Time table and settings for program sequence PME73.831... Type Time in seconds P234 P254 P225 4) PME73.831... P226 P257 P230 P232 P231 P224 P259 P260 max. min. approx. min. min. approx. approx. approx. approx. min. max. min. min. Requirement t9+P254(1/3) Factory setting t3n+0.45...
Page 142 Legend Specified time air pressure switch state message (timeout) Waiting time Opening time of actuator (timeout) Safety time Closing time of actuator (timeout) Prepurge time 2nd safety time Preignition time Test atmospheric pressure Postignition time (P257 +0.3 seconds) Test gas pressure Interval: End of ignition safety time –...
Page 143: Lme73.000
18.6 LME73.000...: Inputs and outputs/internal connection diagram Fig. 74: LME73.000...: Inputs and outputs/internal connection diagram 143/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 18 PME73.831… 29.11.2011...
Page 144: Parameter List Pme73.831
18.7 Parameter list PME73.831... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 145 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level Min. Max. number reading from level writing from level Burner control 13.818 s 0.294 s 12.054 s Specified time air pressure switch Edit 1237 s 4.851 s 29.106 s Prepurge time -2,1 seconds Edit 1.029 s...
Page 146 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from writing from level level 259.00 Opening time of actuator (timeout) Edit 1237 s 4.851 s 67.914 s 259.01 Opening time of actuator from ignition load to low-fire position Edit 37.485 s 0.147 s...
Page 147 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from writing from level level Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 148: Pme73.840
19 PME73.840... 19.1 Program sequence PME73.840...  To connection diagram fuel trains (G) Gp1/1)/(Gp1/2) Standby Startup Operation Shutdown Valve proving If parameter P241.00 =1 (ON) Can be parameterized t11 t10 t12 t3 td4 td1 td3 td2 21 22 24 22 30 30 38 40 42 44 50 50 72 74 10 80 81 82 83...
Page 149 Key to phases Phase Function number Lockout shutdown phase Standby, waiting for heat request oP1/oP:P1 Part 1: Request load controller OPEN Part 2: Modulation of actuator toward high-fire Part 3: High-fire reached Part 4: Request load controller CLOSE Part 5: Modulation of actuator toward low-fire Part 6: Low-fire reached Shutdown, actuator travels to the CLOSED position (home run) Safety valve ON, air pressure switch in no-load position...
Page 150: Connection Diagrams For Fuel Train Applications (Examples)
19.2 Connection diagrams for fuel train applications (examples) 19.2.1 Gas direct ignition (G), 1-stage Program Gas direct 1-stage LME73.000... X7-04 X7-01 LME73.000... X2-09 Figure 76: Connection diagram fuel train gas direct ignition (G), 1-stage 19.2.2 Gas pilot ignition 1 (Gp1/1), 1-stage Program Gas pilot 1, 1-stage Gp1/1...
Page 151: Gas Pilot Ignition 1 (Gp1/2), 1-Stage, With Valve Proving
19.2.3 Gas pilot ignition 1 (Gp1/2), 1-stage, with valve proving Program Gas pilot 1, 1-stage Gp1/2 LME73.000... X7-01 X7-04 X7-02 Figure 78: Connection diagram fuel train gas pilot ignition 1 (Gp1/2), 1-stage, with valve proving 19.2.4 Gas direct ignition 1 (Gp1/2), 1-stage, with valve proving Program Gas direct 1, 1-stage Gp1/2...
Page 152: Gas Valve Proving
19.2.5 Gas valve proving Valve proving is dependent on parameter 241. This is valve proving designed to detect leaking gas valves and, if necessary, prevent the valves from opening or ignition from being switched on. Lockout is initiated. Valve proving with separate pressure switch Step 1: td4 –...
Page 153: Valve Proving - Calculation Of Leakage Rate
Warning! The OEM must set the evacuation, filling and test times for atmospheric or mains pressure on every plant in compliance with the requirements of EN 1643. If not observed, there is a risk of impairment of safety functions. It must be ensured that the 2 test times are correctly set. It is to be checked whether the gas required for the test may be fed into the combustion chamber (on the relevant application).
Page 154: Connection Diagram For Lme73.000
19.3 Connection diagram for LME73.000... with actuator SQM4... (example 1) Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.840... 1-stage modulating With/without pilot ignition With/without valve proving X2-09 Figure 81: Connection diagram for LME73.000...
Page 155: Connection Diagram For Lme73.000
19.4 Connection diagram for LME73.000... without actuator SQM4... Note:  The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME73.840... 1-stage With/without pilot ignition With/without valve proving Without actuator X2-09 Figure 82: Connection diagram for LME73.000...
Page 156: Time Table And Settings For Program Sequence Pme73.840
19.5 Time table and settings for program sequence PME73.840... Type Times in seconds PME73.840... P225 P226 P257 P230 P232 P234 P231 P224 P259 P260 max. min. min. approx. min. min. min. approx. approx. approx. approx. min. max. Requirement t9+1 Factory setting t3n+0.45 29.106+2.1 6.174...
Page 157: Lme73.000
19.6 LME73.000...: Inputs and outputs/internal connection diagram Figure 83: LM73.000...: Inputs and outputs/internal connection diagram 157/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure & Cities Sector 19 PME73.840... 29.11.2011...
Page 158: Parameter List Pme73.840
19.7 Parameter list PME73.840... (AZL2...) Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Internal parameter Heating engineer's password (4 characters) Edit xxxx xxxx OEM's password (5 characters) Edit xxxxx xxxxx...
Page 159 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number reading from level writing from level Min. Max. Burner control Specified time air pressure switch Edit 13.818 s 0.294 s 13.818 s Prepurge time -2,1 seconds Edit 1237 s 4.851 s 29.106 s...
Page 160 Parameter Parameter Edit Value range Resolution Factory setting Password level Password level number Min. Max. reading from level writing from level Error history Current error: Read only Service 00: Error code 01: Startup meter reading 999999 02: MMI phase 03: Power value 100% Error history former 1: Read only...
Page 161: Legend
20 Legend Alarm device Auxiliary output Wire link Lockout reset button (info button) (EK1) /reset Remote lockout reset button Flame signal amplifier Ionization probe K... Relay contact 3-color signal lamp Air pressure switch Load controller LR-OPEN Load controller OPEN position LR-CLOSE Load controller CLOSED position Fan motor...
Page 162 Zeiten Safety time Waiting time Prepurge time Preignition time Postignition time (P257 +0.3 seconds) Interval: End of safety time – fuel valve 1 ON Interval: End of safety time – fuel valve 2 ON (dependent Interval: End of safety time – load controller release application) Interval: Pilot valve OFF - load controller release Postpurge time...
Page 163: Multistage Or Modulating Mode
Multistage or modulating mode 21.1 Relevant parameters Parameter Meaning Minimum power control step Opening time of actuator (timeout) Closing time of actuator (timeout) Analog input (feedback potentiometer ASZxx.3x required) 0 = 3-position step input 1 = DC 0...10 V 2 = 0...135  3 = 0...20 mA 4 = 4...20 mA with lockout at I <4 mA (AZL2…: Loc: 60) 5 = 4...20 mA...
Page 164: Connection Diagram For Load Controller
21.1.2 Connection diagram for load controller  Note: The connection diagram shown is merely an example which must be verified in the individual case depending on the application! PME7... 0-135 Figure 85: Connection diagram for load controller 21.2 Actuators The LME7... has terminals for the connection of electromotoric actuators for the control of air dampers and regulating dampers of oil and gas burners.
Page 165: Load Controller Inputs
21.4 Load controller inputs 21.4.1 3-position step input X5-03 The load controller input is valued by making a 2-out-of-3 section. This means that to trigger a control action via the actuator outputs, an ON or OFF signal must be identified within at least 2 successive cycles.
Page 166: Multistage/Modulating Mode Via 3-Position Step Input X5-03
21.5 Multistage/modulating mode via 3-position step input X5-03 The signal time of a control pulse is a minimum of 147 ms. 21.5.1 Maximum possible resolution The maximum possible resolution via 3-position step input X5-03 is calculated according to the following formula: Working range in angular degrees x 0.147 s ---------------------------------------------------- = maximum possible resolution in angular degree Running time in seconds...
Page 167: Setting The Minimum Power Control Step (Dead Band) (P123) In Modulating Mode Via Analog Input Signal X65
21.7 Setting the minimum power control step (dead band) (P123) in modulating mode via analog input signal X65 The minimum power control step must be greater than or equal to the percentage proportion of the maximum resolution of the entire modulation range (protection against hunting).
Page 168: Safety Notes Relating To Operation Of Azl2
If not observed, there will be a risk of electric shock. If you have any other questions relating to the unit, please contact your heating engineer or get in touch with any of the Siemens addresses given in this Basic Documentation.
Page 169: Building Technologies Division Basic Documentation Lme7
Operation via AZL2… 23.1 Description of the unit/display and buttons Function and operation of versions AZL21… and AZL23… are identical. /reset h min s Figure 86: Description of the unit/display and buttons Button Function Buttons A and F: Parameterized function - For switching to parameter setting mode P (press simultaneously)
Page 170: Meaning Of Symbols On The Display
23.2 Meaning of symbols on the display Fault status message Flame present Valve controlled Ignition controlled Fan motor controlled Oil preheater on Heat request from controllers Parameter setting mode Info mode Service mode h min s Actuator closing Actuator opening Unit of current display Figure 87: Meaning of display 23.3...
Page 171: Operation
23.4 Operation Warning! Any changes to parameters and settings are only set and saved in the basic unit’s onboard memory. To save the modified settings to the program module PME7..., backup must be triggered manually. If this is not observed, there is a risk of loss of safety functions. ...
Page 172: List Of Phase Display (Display Depending On Program)
List of phase display (display depending on program)  Note: Display depends on program! Phase number or Function 3-segment display and AZL2... display Standby Standby, waiting for heat request Ph08 Power ON/test phase (e.g. detector test) Startup Ph21 Yellow Safety valve ON, air pressure switch test/POC test (timeout/locking after 5 seconds), actuator opens in low-fire position/CLOSE position Ph22 Yellow...
Page 173: Display Of Operating Position
23.4.1.3. Display of operating position Display oP: P1 means stage 1. Display after oP is unit-specific. h min s Display oP: P2 means stage 2. Display after oP is unit-specific. Display oP: means modulating operation. Display after oP: is unit-specific. Display shows the relative value of the actual position of actuator (51).
Page 174: Fault Status Messages, Display Of Errors And Info
23.4.1.4. Fault status messages, display of errors and info Display of errors (faults) with lockout Display shows Loc:. The bar under the fault status message appears. Unit is in the lockout position. The current error code is displayed (see chapter Blink h min s code table).
Page 175: Menu-Driven Operation
23.5 Menu-driven operation 23.5.1 Assignment of levels The various levels can be accessed via different button combinations. The parameter level can only be accessed by entering a password. Normal display >1 s /reset Operate >8 s Info level /reset >3 s <8 s /reset automatic...
Page 176: Info Level
23.6 Info level The info level displays information about the basic unit and operation in general.  Note: On the info level, you can press to display the next or the previous parameter. In place of the button, you can also press for <1 second.
Page 177: Display Of Info Level
23.6.1 Display of info level Press until InFo appears. /reset /reset 1…3 s When releasing , you are on the info level. h min s /reset 23.6.2 Display of info values 23.6.2.1. Identification date On the left, parameter 102: is displayed blinking. On the right, ._._ is displayed.
Page 178: Identification Of Burner
23.6.2.3. Identification of burner On the left, parameter 113: (108 with sample units) is displayed blinking. On the right, ._._ appears. Example: 113: ._._ h min s Press for 1…3 seconds to display the /reset burner’s identification. /reset Factory setting: - - - - - - - - 1…3 s h min s Example: 3...
Page 179: Number Of Startups Resettable
23.6.2.4. Number of startups resettable  Note: Can be deleted for service (see chapter Parameter list)! On the left, parameter 164: is displayed blinking. On the right, characters ._._ appear. Example: Parameter 164: ._._ h min s Press for 1…3 seconds to display the /reset number of startups (resettable).
Page 180: Total Number Of Startups
23.6.2.5. Total number of startups On the left, parameter 166: is displayed blinking. On the right, characters ._._ appear. Example: Parameter 166: ._._ h min s Press for 1…3 seconds to display the total /reset number of startups. /reset 1…3 s h min s Example: 000056 /reset...
Page 181: Service Level
23.7 Service level The service level is used to display information about errors including the error history.  Note: When on the service level, you can press to display the next or the previous parameter. Instead of pressing , you can also press for <...
Page 182: Display Of Service Values
23.7.2 Display of service values 23.7.2.1. Error history See Parameter with index, with or without direct display/Example of parameter 701 Error history.  Note Can be deleted for service (see chapter Parameter list)! 23.7.2.2. Mains voltage Parameter 951: appears blinking. Mains voltage is displayed on the right.
Page 183: Parameter Level
The OEM is obliged to mark the unit accordingly and to include at least the list of device parameters and settings in the burner’s documentation. Siemens also recommends attaching an additional mark on the LME7... in the form of an adhesive label. According to EN 298, the label should be easy to read and wipeproof.
Page 184: Entering The Password
23.8.1 Entering the password Note:  The OEM password must consist of 5 characters, that for the heating engineer of 4 characters. Press button combination to display CodE. > 1 s h min s When releasing the buttons, 6 bars appear the first of which blinks.
Page 185 As a confirmation of correct entry, PArA appears for a maximum of 2 seconds. h min s  Note: For the entry of passwords or burner IDs, the following numerals and letters can be used: 185/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure &...
Page 186: Changing The Heating Engineer's Password
23.8.2 Changing the heating engineer's password Note:  For the OEM to change the heating engineer’s password, c: demands entry of the OEM password! Parameter 041: blinks. Press to go to level c: for password changes. h min s /reset Letter c: for confirmation appears blinking.
Page 187: Changing The Oem's Password
23.8.3 Changing the OEM's password Parameter 042: blinks. Press to go to level c: for password changes. h min s /reset Letter c: for confirmation appears blinking. Proceed as described in section Entering the password and enter the former password. After entry of the last character, the password must be /reset min s...
Page 188: Backup
23.8.4 Backup Parameter 000: blinks. Display: Parameter 000: blinks, display Int does not /reset Press for parameter group 041. /reset Display: Parameter 041: blinks, display ._._ does not Press for parameter 060. Display: Parameter 060. blinks, index 00: and value 0 do /reset Press for parameter rEStorE.
Page 189 Press for value 1. Display: Value 1 blinks /reset Press to activate the backup process. /reset Display shows run After approx. 3 seconds (depending on the duration of the program sequence), the displays shows bAC End and <3 s signals the end of the backup process. Display: bAC End It will now be displayed for 2 minutes, or can be finished by pressing the button...
Page 190: Restore
23.8.5 Restore Parameter 000: blinks. Display: Parameter 000: blinks, display Int dos not /reset Press for parameter group 041. /reset Display: Parameter 041: blinks, display ._._ does not. Press for parameter 060. Display: Parameter 060. blinks, index 00: and value 0 do not.
Page 191 /reset Press to activate the restore process. /reset Display shows run After approx. 3 seconds (depending on the duration of the program sequence), the displays shows rSt End and <3 s signaled the end of the restore process. Display: rSt End It will now be displayed for 2 minutes, or can be finished by pressing the button /reset...
Page 192: Operating Variants Of The Parameters
23.9 Operating variants of the parameters The parameters stored in the burner control LME7... can be displayed and changed on the parameter level. 23.9.1 Parameters without index, with direct display 23.9.1.1. Example of parameter 225 (prepurge time) on the parameter level Press for prepurge time.
Page 193 Alternative 1: Discard the change! h min s Alternative 2: Adopt the value! /reset Press to return to editing mode. /reset The value set will be adopted. Note: To detect display errors, the value appears one h min s place shifted to the right. Display: Value 3.822 h min s Back to the previous...
Page 194: Parameters Without Index, With No Direct Display
23.9.2 Parameters without index, with no direct display 23.9.2.1. Example of parameter 224 (specified time air pressure switch) on the parameter level Press for specified time for air pressure signal. Display: Parameter 224: blinks, characters h min s ._._ do not. /reset Press for editing mode.
Page 195 Alternative 1: Discard the change! h min s Alternative 2: Adopt the change! /reset Press to return to editing mode. /reset The value set will be adopted. Note: To detect display errors, the value is shown again, h min s but shifted one place to the right.
Page 196: Parameters With Index, With Or Without Direct Display
23.9.3 Parameters with index, with or without direct display 23.9.3.1. Example of parameter 701: Actual error on the service level See chapter Error code list! Press to select parameter 701. Display: Parameter 701. blinks, index 00: and error 4 do not.
Page 197 Press to select the index. .02 = MMI phase to the time of fault Example: h min s Parameter 701., index 02:, Phase 02 = safety shutdown To the next index Press to select the index. .03 = power value to the time of fault Example: h min s Parameter 701., index 03:, power value 60%...
Page 198 Press to return to the parameter level. Display: Parameter 701. blinks, index 01: and diagnostic code 4 do not. h min s To the next older error ▪ ▪ ▪ Parameters cover the period back to the last error since deletion of the history (max.
Page 199: Error Code List With Operation Via External Azl2
24 Error code list with operation via external AZL2... display  Note: Display depends on program! Error code Clear text Possible cause Fault of compatibility program module to basic Program sequence of program module does not bAC Er3 unit during backup process match the basic unit - Error in data content of program module Err PrC...
Page 200 PWM (P675.00) after reaching the prepurge speed, - After reaching the ignition load speed, the maximum ignition load PWM (P675.01) was exceeded Parameterization error: - Speed low-fire > speed high-fire, or Loc: 226 PWM fan faulty - Low-fire = 0 rpm, or - Maximum speed = 0 rpm One or several parameters violate the Loc: 227...
Page 201: Operation Via Internal Led
Operation via internal LED 25.1 Description of display and buttons Figure 91: Description of display and buttons Button Function Button A - Display preset output - In lockout position: Power value to the time of fault Info and Enter button - Reset in the event of fault, changeover visual diagnostic of the cause of fault (see chapter Diagnostics of cause of fault ) - button...
Page 202: Normal Display
25.2 Normal display Normal display is the standard display in normal operation. 25.2.1 Display in standby mode Unit is in standby mode. 25.2.2 Display during startup/shutdown 25.2.2.1. Display of program phases The unit is in Phase 21. The individual program phases are displayed in accordance with the program sequence.
Page 203: List Of Phase Display
25.2.2.2. List of phase display  Note: Display depends on program! Phase number or Function 3-segment display and AZL2... display Standby Standby, waiting for heat request Power ON/test phase (e.g. detector test) Startup Yellow Safety valve ON, air pressure switch test/POC test (timeout/locking after 5 seconds), actuator opens in low-fire position/CLOSE position Yellow Fan motor ON/air pressure switch test/settling time...
Page 204 Phase number or Function 3-segment display and AZL2... display Waiting phases (start prevention) Red/yellow flashing Undervoltage Yellow Safety loop open  Safety shutdown followed by lockout with interlocking Red/green flashing Extraneous light on burner startup (timeout/locking after 30 seconds) Yellow Pressure switch-min open ...
Page 205: Display Of Operating Position
25.2.3 Display of operating position Display oP1 means stage 1. Display after oP is unit-specific. The signal lamp blinks green. 25.3 Special functions 25.3.1 Manual lockout Press simultaneously with any other button. Basic unit changes from any operating position Alternately directly to lockout.
Page 206: Fault Status Messages, Display Of Errors
25.4 Fault status messages, display of errors 25.4.1 Display of errors (faults) with lockout Display shows alternately Loc and 4. Unit is in the lockout position. Alternately The current error code is displayed and the signal lamp is blinking red. Example: Error code 4 Press for display of the phase, where the fault...
Page 207: Display Of Flame Current Ion Or Qra
25.4.2 Display of flame current ION or QRA...  Note: This display is only possible in operating mode or standby! Press for display of the flame signal amplifier. Signal lamp blinks green. Display shows FL.1. When pressing (1…3 seconds), the flame signal current is displayed.
Page 208: Display Of Flame Current Qrb
25.4.4 Display of flame current QRB... or QRC...  Note: This display is only possible in operating mode or standby! Press for display of the flame signal amplifier. Signal lamp blinks green. Display shows FL.2. When pressing (1…3 seconds), the flame signal current is displayed.
Page 209: Display Of Preset Output
25.4.5 Display of preset output Note:  Display is possible only when …  in operating mode or standby,  program sequence for modulating operation via analog preset output. Press for display of the relative current position of the actuator. Signal lamp blinks green.
Page 210: Manual Adjustment (Depending On Program Module)
25.5 Manual adjustment (depending on program module) 25.5.1 Position of actuator or speed of PWM fan in modulating operation with analog signal Note: Display is possible only when …   in operating mode or standby,  program sequence for modulating operation via analog preset output and with connected actuator with potentiometer for position feedback to the LME7...
Page 211 Press for >3 seconds to display alternately LoA and The relative value 41 of the current position or current speed is displayed. Actuator position 0° Current speed 0  potentiometer value = 0 rpm = 0 display 0% display Current speed corresponds Alternately Actuator position high-fire to the rated load speed =...
Page 212 Note:  When the program phase (e.g. P10 - shutdown) changes during manual adjustment, the display blinks   Manual adjustment mode remains active until Escape switches the basic unit back to normal operation or until the basic unit 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 is driven to the position or speed of the manually preset value 212/245...
Page 213: First Startup With A New Program Module Or In Case Of Replacement Of Program Module
25.6 First startup with a new program module or in case of replacement of program module Display shows alternately rSt and PrC. Display shows the replacement of the program module. Alternately Signal lamp blinks red once and yellow twice alternately. Press for >3 seconds to start data download from the program module.
Page 214 Press for >1 second to reset the unit. Display: OFF >1 s Warning! On first startup or after exchange of the program module, the sequence of functions and parameter settings must be checked upon completion of the restore process  See chapter Operation via AZL2.../first startup, restore ...
Page 215: Manual Backup
25.7 Manual backup Press simultaneously for >1 second (Escape) to start a manual backup process. Parameter PrC appears. Display: PrC >1 s Press for parameter bAC. Display: bAC 1…3 s run appears during download (backup process) of the program sequence. Display shows alternately End and bAC.
Page 216: Error During Backup Process
25.7.1 Error during backup process Display shows alternately bAC and Er3. Alternately For meaning of a possible cause, see chapter Error code list with operation via internal LED.  Note: During backup, all settings and parameters are transferred from the basic unit’s memory to the memory of the program module.
Page 217: Manual Restore
25.8 Manual restore Press simultaneously for >1 second (Escape) for starting the manual restore process. Parameter PrC appears. Display: PrC >1 s Press for parameter rSt. Display: rSt 1…3 s run appears during download (restore process) of program sequence. Display shows alternately End and rSt. Alternately Display shows the end of data exchange.
Page 218: Errors During The Restore Process
25.8.1 Errors during the restore process Alternately with Display shows alternately rSt and Er1, Er2 or Er3. For meaning of a possible cause, see chapter Error code list with operation via internal LED.  Note: During the restore process, all settings and parameters are written from the program module to the basic unit’s onboard memory.
Page 219: Error Code List With Operation Via Internal Led
26 Error code list with operation via internal LED  Note: Display depends on program! Error code Clear text Possible cause Fault of compatibility program module to Program sequence of program module does not bAC Er3 basic unit during backup process match the basic unit - Error in data content of program module Err PrC...
Page 220 - Fan speed dropped below the minimum prepurge PWM (P675.00) after reaching the prepurge speed, or Loc: 225 Faulty PWM fan - After reaching the ignition load speed, the maximum ignition load PWM (P675.01) was exceeded Parameterization error: - Speed low-fire > speed high-fire, or Loc: 226 Faulty PWM fan - Low-fire = 0 rpm, or...
Page 221: Pwm Settings
PWM settings 27.1 Relevant parameters Note:  Initial parameter settings (also see chapter Initial PWM parameter settings)! Display depends on program. Parameter Meaning Ignition load speed (P403:[0] in ACS410 software): Corresponds to the ignition load speed in revolutions per minute (rpm). Prerequisite: P0 ≥...
Page 222 Parameter Meaning 516.01 Maximum limit speed ignition load P0: Corresponds to the maximum speed for ignition load P0 in revolutions per minute (rpm) at which the burner may still be securely ignited. Prerequisite: P516.01 ≥ P0 Note: Step size of speed when making the setting with operating unit AZL2...: 10 rpm Step size of speed when making the setting with PC software ACS410: 1 rpm 517.00 Minimum limit speed low-fire P1:...
Page 223: Pwm Control Parameters
27.2 PWM control parameters Parameter Meaning Ramp-up Control parameter ”Ramp time” is the preset time in seconds (s) within which the PWM signal reaches the setpoint with a positive setpoint step (0 rpm to high-fire rpm). Factory setting: Approx. 15 seconds Ramp-down Control parameter ”Ramp time”...
Page 224: Pwm Safety Parameters
27.3 PWM safety parameters  Note: Also see chapter Initial PWM parameter settings! Parameter Meaning PWM mode control Determines the behavior of PWM control, delivering a PWM signal proportional to the preset output (analog/3-position step input). Control: Controls the PWM speed proportional to the output preset via the analog or 3-position step input.
Page 225: Initial Pwm Parameter Settings
27.4 Initial PWM parameter settings 27.4.1 Initial settings of PWM basic parameters Note:  The initial settings of the PWM basic parameter are made exclusively on the OEM level. Prerequisites  Operating unit AZL2... for setting the parameters is connected ...
Page 226  Parameter number 516 blinks. Press to select the next parameter. Parameter 517 blinks Now, for the following parameters, proceed as described above: - P1 low-fire position 517 - P2 high-fire position 518  For parameter number 519, press for >1 second /reset ...
Page 227  By pressing (press simultaneously) you leave the entry level and return to the selection level for the parameters  Display changes from PArA to 400: SEt  Press to select the next parameter group (P500...P600). Display: 500: PArA  Press to go to the respective group /reset...
Page 228: Reading The Value Of Parameter 920 In The Prepurge Phase (P30) And Ignition Load Phase (P38, P40 And P44)
permissible ignition speed close to the overvoltage limit. If this is not observed, there is a risk of loss of safety functions. 27.4.2 Reading the value of parameter 920 in the prepurge phase (P30) and ignition load phase (P38, P40 and P44) Procedure ...
Page 229: Final Settings Of Pwm Safety Parameters
27.4.3 Final settings of PWM safety parameters Note: PWM control by the LME7... makes use of the Hall signal for feedback. This Hall signal is used to calculate the manipulated variable of the PWM control process. To  prevent the calculation of wrong manipulated variables in the event of incorrect Hall signals, the working range of PWM control must be restricted via parameter 675.00/675.01.
Page 230: Checking Prepurging
 Press to go to the respective group /reset  Press to select parameter 675.00 (675 blinking)  Press for >1 second. Subindex 00 blinks /reset  Press /reset  Press to set the previously determined value -1% of parameter 920 (prepurge phase (P30)) ...
Page 231: Setting Safety Parameters 675.00/675.01 And Checking The Safety Settings Under Worst-Case Conditions
27.4.4 Setting safety parameters 675.00/675.01 and checking the safety settings under worst-case conditions Procedure Select test mode (parameter 559) and check the prepurge speed under worst-case conditions close to the undervoltage limit, or check the ignition load speeds under worst-case conditions close to the overvoltage limit: Note: In test mode (parameter 559, setting value = 2), the normalized PWM signal (parameter 675.00) for the prepurge phase or the PWM signal (parameter 675.01) for...
Page 232: Checking The Ignition Load
Checking the ignition load  To check the ignition load speed, set the required worst-case conditions close to the overvoltage limit  Start the burner and check the speed, the volumetric air flow or air pressure by taking appropriate measures while ensuring compliance with the relevant standards (e.g.
Page 233: Via The Onboard Operating Panel Of The Lme7
27.4.6 ... via the onboard operating panel of the LME7... basic unit  Keep simultaneously depressed for >5 seconds.  Display shows OFF blinking Note: If there is no operating action for >30 seconds, the LME7... changes automatically to standard mode. This means that adaptation of the working points must be started again.
Page 234: Via The Azl2
27.4.7 ... via the AZL2... operating unit  Start the programming mode for the heating engineer  Keep depressed for <5 seconds. Display shows Code  Enter the heating engineer’s password via . Also see chapter /reset Entering the password ...
Page 235  In the operating position, the output predefined by the external load controller applies Note:  To store the settings in the PME... program module, a manual backup is required. Also see chapter Manual backup. 235/245 Building Technologies Division Basic Documentation LME7... CC1P7105en Infrastructure &...
Page 236: Overview Of Pwm Fan Parameters (Value Range Refers To Pme71.901)
27.5 Overview of PWM fan parameters (value range refers to PME71.901) Parameter- Designation Value range Step size *) Conditions number Min. Max. 403.00 Fan speed: Ignition load speed (P0) 9000 10 rpm Factory setting 3000 rpm 403.01 Fan speed: Low-fire speed (P1) 9000 10 rpm Factory setting 1200 rpm...
Page 237 Parameter- Designation Value range Step size *) Conditions number Min. Max. Integral action time speed control 37.485 0.147 s Factory setting 0.441 s Derivative action time speed control 37.485 0.147 s Factory setting 0 seconds Time constant PT1 speed control: Lower 679.00 37.485 0.147 s...
Page 238 Index Safety notes relating to operation AZL2 ...........168 Description of the unit/display AZL2 and buttons......169 Service level ......181 AZL2 Info level........176 Parameter level ......183 Display of info level....177 AZL2 Display of info values ... 177 Operating variants of the End of info level.....
Page 239 First startup with a new program Multistage or modulating mode module or in case of replacement Relevant parameters....163 of program module....213 Multistage/modulating mode via Manual adjustment....210 3-position step input X5-03..166 Position of actuator or speed of Maximum possible resolution PWM fan in modulating ..........166 operation with analog signal...
Page 240 PME73.820 ........105 Connection diagram for Connection diagram for LME72.000 with actuator SQM478 LME73.000 with actuator SQM4 Connection diagram for ...........111 LME72.000 without actuator Connection diagram for SQM4 .......... 79 LME73.000 without actuator Connection diagrams for fuel SQM4.........112 train applications....... 77 Connection diagrams for fuel Gas direct ignition 1 G1/1, 2- train applications .....107...
Page 241 Gas pilot ignition 1 Gp1, 1-stage, the safety settings under with valve proving alternate worst-case conditions ..231 burning ignition burner... 136 Overview of PWM fan parameters Gas pilot ignition 2 Gp2, 1-stage, ...........236 without valve proving PWM control parameters ..223 simultaneously ignition burner PWM safety parameters ..224 ..........
Page 242: List Of Figures
28 List of figures Figure 1: Mounting – mounting surface .................15 Figure 2: Example: Modulating gas burner..............21 Figure 3: Ionization input at AC 120 V/AC 230 V ............34 Figure 4: Measuring circuit for ionization probe.............35 Figure 5: Measuring circuit for QRA................36 Figure 6: Dimensions of LME7...
Page 243 Figure 34: Connection diagram fuel train gas pilot ignition 1 (Gp1/1), 1-stage .....86 Figure 35: Connection diagram for LME72.000... with actuator SQM4... (example 1) ..87 Figure 36: Connection diagram for LME73.000... without actuator SQM4....88 Figure 37: LME72.000...: Inputs and outputs/internal connection diagram ....90 Figure 38: Program sequence PME73.810...
Page 244 Fig. 65: Program sequence PME73.831... to connection diagram fuel trains (G)/(Gp1)/(Gp2) ....................132 Fig. 66: Program sequence PME73.831... to connection diagram fuel trains (G)/(Gp1)/(Gp2) ....................133 Fig. 67: Connection diagram fuel application gas direct ignition (G), 1-stage, without valve proving ......................135 Fig. 68: Connection diagram fuel application gas pilot ignition 2 (Gp2), 1-stage, without valve proving ......................135 Fif.
Page 245 Siemens AG Infrastructure & Cities Sector Building Technologies Division © 2011 Siemens AG Infrastructure & Cities Sector Berliner Ring 23 Building Technologies Division D-76437 Rastatt Subject to change! Tel. +49 7222 598 279 Fax +49 7222 598 269 www.siemens.com 245/245 Building Technologies Division Basic Documentation LME7...

This manual is also suitable for:

Lme71.000a1 Lme71.000a2 Lme72.000a2 Lme73.000a1 Lme73.000a2

Siemens LME7 Series Basic Documentation

1 Safety Notes

2 System Makeup/Function Description

3 Type Summary

4 Technical Data

5 Dimensions

6 Function

7 Operation, Indication, Diagnostics

8 Inputs/Outputs

9 Basic Unit

10 Pme71.401

11 Pme71.402

12 Pme71.901

13 Pme72.521

14 Pme72.541

15 Pme73.810

16 Pme73.820

17 Pme73.830

18 Pme73.831

19 Pme73.840

20 Legend

21 Multistage or Modulating Mode

22 Safety Notes Relating to Operation of AZL2

23 Operation Via AZL2

24 Error Code List with Operation Via External AZL2

25 Operation Via Internal LED

26 Error Code List with Operation Via Internal LED

27 PWM Settings

28 List of Figures

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Summary of Contents for Siemens LME7 Series