Siemens LME7 Series Technical Instructions
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Siemens LME7 Series Technical Instructions

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SCC Inc.
Technical Instructions LME-1000
www.scccombustion.com
June 11, 2019
LME7...
Burner Controls
Combustion Controls
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Summary of Contents for Siemens LME7 Series

  • Page 1 SCC Inc. Technical Instructions LME-1000 www.scccombustion.com June 11, 2019 LME7… Burner Controls Combustion Controls...
  • Page 2 Intentionally Left Blank ...

  • Page 3: Table Of Contents

    LME Series Technical Instructions Document No. LME-1000 Table of Contents Section 1: Overview Introduction ........................... 1 LME7 System Builder ......................2 Mounting ..........................10 Important Safety Notes ......................12 Approvals ..........................13 Section 2: LME71 Wiring, Parameters, and Phase Diagrams LME71 Wiring Diagrams ......................
  • Page 4 Technical Instructions LME Series Document No. LME-1000 Section 6: PWM Blowers Introduction ........................... 1 PWM Blower Fundamentals ....................1 Centrifugal Blower Fundamentals ..................2 Blower Speed Monitoring ...................... 3 Commissioning the LME7 when Using a PWM Blower............5 Adjusting P0, P1, and P2 via the LME7 Built-in Display ............7 Adjusting P0, P1, and P2 via the AZL23 Display Unit ...............
  • Page 5 LME Series Technical Instructions Document No. LME-1000 Section 9: ACS410 ACS410 Software Introduction ....................1 Software Installation ......................2 Connecting to a PC ......................... 3 Saving a Parameter Set to a PC ....................4 Uploading a Parameter Set to an LME7 .................. 5 Creating an LME7 Startup Report ...................
  • Page 6 Technical Instructions LME Series Document No. LME-1000 Intentionally Left Blank Table of Contents Page 4 SCC Inc.
  • Page 7 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 8 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 9: Introduction

    LME Series Technical Instructions Document No. LME-1000 Introduction The LME7 burner control is ideally suited for use in industrial thermal process applications. The LME7 is extremely flexible, and encompasses the following features: • Accepts standard UV, self-check UV, or self-check IR scanners and/or flame rods •...

  • Page 10: Lme7 System Builder

    Technical Instructions LME Series Document No. LME-1000 LME7 System Builder The LME7 burner control system is comprised of many components. Use the following pages to choose the components needed for your specific application. Control Panel Components Base Unit – Qty (1) Required Choose one of the following LME7 base unit options.
  • Page 11 LME Series Technical Instructions Document No. LME-1000 Plug Set – Qty (1) Required The terminal plug set for the LME7 is sold separately. Each LME7 needs one plug set. Plug set containing all terminals for an LME7 system AGG3.710 LME7 Package - Optional For convenience, the LME7 base unit, PME7 program module, and AGG3.710 plug set can be ordered as a package that is shipped pre-assembled.
  • Page 12 Technical Instructions LME Series Document No. LME-1000 Remote Display – Optional Each LME7 can be equipped with a remote display that provides additional status information not shown by the integral LED display on the LME7. Either the remote display or the ACS410 software are required to change parameter settings on the LME7.
  • Page 13 LME Series Technical Instructions Document No. LME-1000 Actuators and Accessories Actuator – Qty (1) Optional with LME73 and LME75 Burner Controls SQM4… and SQM5… series actuators are available for use with the LME73 and LME75 burner controls. For more information on SQM4… actuators, refer to Document No. N7817. For more information on SQM5…...
  • Page 14 Technical Instructions LME Series Document No. LME-1000 Flame Scanners Flame Scanners – Qty (1) Required Unless Using a Flame Rod Four flame scanners are available for use with the LME7. For technical information about these flame scanners, refer to Document No. N7711 for the QRA4.U, Document No. N7719 for the QRI…...
  • Page 15 LME Series Technical Instructions Document No. LME-1000 QRA75.A17 Accessories - Optional Mounting accessories are available for the QRA75.A17 flame scanner. For more information, refer to Document No. N7712. Right angle adapter for mounting a QRA75 flame scanner. Comes with a 1” NPSM female thread AGG16.U connection Thermal barrier for use with the QRA75 flame...
  • Page 16 Technical Instructions LME Series Document No. LME-1000 Additional Flame Scanner Accessories – Optional Additional accessories are available for flame scanners to prevent heat from getting to the scanner. For more information, refer to Document No. N7711 and Document No. N7712. Thermal barrier for use with the QRA4.U flame scanner, and QRI2B2.B180B flame scanner when THERMAL-...
  • Page 17 LME Series Technical Instructions Document No. LME-1000 Enclosures Enclosures - Optional A small NEMA 1 enclosure is available for use with any LME7… base unit. Three ½” conduit knockouts are available on both the top and the bottom of the enclosure. NEMA 1 enclosure for any LME7…...

  • Page 18: Mounting

    Technical Instructions LME Series Document No. LME-1000 Mounting LME7 Controller The LME7 must be mounted inside an enclosure that will protect it from dirt and moisture. The unit should be mounted with three #8 screws (not provided). The panel, which the unit sits on, should be drilled and tapped to accommodate these screws.
  • Page 19 LME Series Technical Instructions Document No. LME-1000 AZL23 Display The AZL23 is designed to be mounted in a rectangular cutout through the face / door of an electrical enclosure. It has one screw on the top and another on the bottom that engage small plastic tabs which will swing out when the screw is tightened clockwise;...

  • Page 20: Important Safety Notes

    Technical Instructions LME Series Document No. LME-1000 Important Safety Notes • The LME7 is a safety device. Under no circumstances should the unit be modified or opened. SCC Inc. will not assume responsibility for damage resulting from unauthorized modification of the unit. •...

  • Page 21: Approvals

    LME Series Technical Instructions Document No. LME-1000 Approvals The LME7 has the following standards and approvals: SCC Inc. Page 13 Section 1...
  • Page 22 Technical Instructions LME Series Document No. LME-1000 Intentionally Left Blank Section 1 Page 14 SCC Inc.
  • Page 23 Section 1 Overview LME71 Wiring, Section 2 Parameters, and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 24 Section 1 Overview Section 2 LME71 Wiring, Parameters, and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 25: Lme71 Wiring Diagrams

    LME Series Technical Instructions LME-1000 LME71 Wiring Diagrams PME71.111A1 – Pilot or direct spark; with purge; no actuator control; no valve proving SCC Inc. Page 1 Section 2...
  • Page 26 Technical Instructions LME Series Document No. LME-1000 PME71.112A1 – Pilot or direct spark; no purge; no actuator control; no valve proving Section 2 Page 2 SCC Inc.
  • Page 27 LME Series Technical Instructions LME-1000 PME71.901A1 – PWM blower control; direct spark only; valve proving; no actuator control SCC Inc. Page 3 Section 2...

  • Page 28: Lme71 Parameter List

    Technical Instructions LME Series LME71 Parameter List LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME71. PME71. PME71. Shaded Parameters = Frequently Used Parameter Name Number 111A1...
  • Page 29 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME71. PME71. PME71. Shaded Parameters = Frequently Used Parameter Name Number 111A1...
  • Page 30 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME71. PME71. PME71. Shaded Parameters = Frequently Used Parameter Name Number 111A1...
  • Page 31 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME71. PME71. PME71. Shaded Parameters = Frequently Used Parameter Name Number 111A1...
  • Page 32 Defines the device being controlled by the LME7 that is used to influence the amount of air to the burner. This value is set by Siemens and cannot be modified. On PME71.901A1, this value should always be set to Read only •...
  • Page 33 Max Ramp Down For Siemens use only. Sets the maximum allowable value for the ramp down time (parameter 523). For Siemens use only. Sets the amount of time the blower speed can lie outside of tolerance band 1 • Tolerance Band 1 Time before a lockout occurs.
  • Page 34 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME71. PME71. PME71. Shaded Parameters = Frequently Used Parameter Name Number 111A1...

  • Page 35: Lme71 Phase Diagrams

    Technical Instructions LME-1000 LME71 Phase Diagrams The Siemens LME7 burner controls can perform a number of different burner sequences based upon which PME7 program module is used, how certain parameters are set, and how the LME7 is wired. Each program module has an associated phase diagram. The phase diagrams illustrate when input and output terminals are expected to be energized or de-energized.
  • Page 36 LME Series Technical Instructions LME-1000 PME71.111A1 Phase Diagram Phase Param. OPER- STARTUP SHUTDOWN ATION SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch X5-01.2 Gas Pressure Switch(es) X10-05.2 Flame Signal X10-06.1/2 POC (P237 = 1) X2-02.4...
  • Page 37 LME Series Technical Instructions LME-1000 PME71.112A1 Phase Diagram Phase Param. OPER- STARTUP SHUTDOWN ATION SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X5-01.2 Gas Pressure Switch(es) X10-05.2 Flame Signal X10-06.1/2 POC (P237 = 1) X2-02.4 POC (P237 = 2) X2-02.3...
  • Page 38 Technical Instructions LME Series LME-1000 PME71.901A1 Phase Diagram Phase Param. OPER- STARTUP SHUTDOWN VALVE PROVING ATION SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch X5-01.2 Gas Pressure Switch(es) X9-04.2 Valve Proving Pressure Switch X10-05.2 Flame Signal...
  • Page 39 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams Section 3 LME73 Wiring, Parameters, and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 40 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams Section 3 LME73 Wiring, Parameters, and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 41: Lme73 Wiring Diagrams

    LME Series Technical Instructions LME-1000 LME73 Wiring Diagrams PME73.811A1 – Modulating actuator control with valve proving; ignition position = low fire SCC Inc. Page 1 Section 3...
  • Page 42 Technical Instructions LME Series Document No. LME-1000 PME73.812A1 – Modulating actuator control with independent ignition position; no valve proving Section 3 Page 2 SCC Inc.
  • Page 43 LME Series Technical Instructions LME-1000 PME73.840A1 – Floating/bumping (position proportional) actuator control with valve proving; actuator can be disabled; ignition position = low fire SCC Inc. Page 3 Section 3...

  • Page 44: Lme73 Parameter List

    Technical Instructions LME Series LME73 Parameter List LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME73. PME73. PME73. Shaded Parameters = Frequently Used Parameter Name Number 811A1...
  • Page 45 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME73. PME73. PME73. Shaded Parameters = Frequently Used Parameter Name Number 811A1...
  • Page 46 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME73. PME73. PME73. Shaded Parameters = Frequently Used Parameter Name Number 811A1...
  • Page 47 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME73. PME73. PME73. Shaded Parameters = Frequently Used Parameter Name Number 811A1...
  • Page 48 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME73. PME73. PME73. Shaded Parameters = Frequently Used Parameter Name Number 811A1...

  • Page 49: Lme73 Phase Diagrams

    Technical Instructions LME-1000 LME73 Phase Diagrams The Siemens LME7 burner controls can perform a number of different burner sequences based upon which PME7 program module is used, how certain parameters are set, and how the LME7 is wired. Each program module has an associated phase diagram. The phase diagrams illustrate when input and output terminals are expected to be energized or de-energized.
  • Page 50 Technical Instructions LME Series Document No. LME-1000 PME73.811A1 Phase Diagram Phase Param. STARTUP OPERATION SHUTDOWN VALVE PROVING SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch X5-01.2 Gas Pressure Switch(es) X9-04.2 Valve Proving Pressure Switch X10-05.2...
  • Page 51 LME Series Technical Instructions Document No. LME-1000 PME73.812A1 Phase Diagram Phase Param. STARTUP OPERATION SHUTDOWN SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch X5-01.2 Gas Pressure Switch(es) X10-05.2 Flame Signal X10-06.1/2 POC (P237 = 1) X2-02.4...
  • Page 52 Technical Instructions LME Series Document No. LME-1000 PME73.840A1 Phase Diagram Phase Param. OPER- STARTUP SHUTDOWN VALVE PROVING ATION SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch X5-01.2 Gas Pressure Switch(es) X9-04.2 Valve Proving Pressure Switch X10-05.2...
  • Page 53 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams Section 4 LME75 Wiring, Parameters, and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 54 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams Section 4 LME75 Wiring, Parameters, and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 55: Lme75 Wiring Diagrams

    LME Series Technical Instructions LME-1000 LME75 Wiring Diagrams PME75.811A1 – Modulating actuator control with valve proving; self-check scanner or flame rod; ignition position = low fire SCC Inc. Page 1 Section 4...
  • Page 56 Technical Instructions LME Series Document No. LME-1000 PME75.812A1 - Modulating actuator control with independent ignition position; no valve proving; self-check scanner or flame rod Section 4 Page 2 SCC Inc.

  • Page 57: Lme75 Parameter List

    Technical Instructions LME Series LME75 Parameter List LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME75. PME75. Shaded Parameters = Frequently Used Parameter Name 811A1 812A1...
  • Page 58 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME75. PME75. Shaded Parameters = Frequently Used Parameter Name 811A1 812A1 Number...
  • Page 59 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME75. PME75. Shaded Parameters = Frequently Used Parameter Name 811A1 812A1 Number...
  • Page 60 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME75. PME75. Shaded Parameters = Frequently Used Parameter Name 811A1 812A1 Number...
  • Page 61 Technical Instructions LME Series LME-1000 LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu Parameter PME75. PME75. Shaded Parameters = Frequently Used Parameter Name 811A1 812A1 Number...

  • Page 62: Lme75 Phase Diagrams

    LME Series LME-1000 LME75 Phase Diagrams The Siemens LME7 burner controls can perform a number of different burner sequences based upon which PME7 program module is used, how certain parameters are set, and how the LME7 is wired. Each program module has an associated phase diagram. The phase diagrams illustrate when input and output terminals are expected to be energized or de-energized.
  • Page 63 Technical Instructions LME Series Document No. LME-1000 PME75.811A1 Phase Diagram Phase Param. STARTUP OPERATION SHUTDOWN VALVE PROVING SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On Air Pressure Switch Note 3 X3-02.1 Gas Pressure Switch(es) Note 4 X5-01.2 X9-04.2...
  • Page 64 LME Series Technical Instructions Document No. LME-1000 PME75.812A1 Phase Diagram Phase Param. STARTUP OPERATION SHUTDOWN SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch Note 3 X5-01.2 Gas Pressure Switch(es) Note 4 X10-05.1 Flame Signal...

  • Page 65: Section 5: Commissioning

    Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 66 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 67: Commissioning A New Lme7 Burner Control

    LME Series Technical Instructions Document No. LME-1000 Commissioning a New LME7 Burner Control 1. Ensure all devices are properly connected to the LME7. See Section 2 (LME71…), Section 3 (LME73…), or Section 4 (LME75…) of this manual for more information on wiring devices to the LME7 burner control.

  • Page 68: Parameter Backups / Restores

    Technical Instructions LME Series Document No. LME-1000 Parameter Backups / Restores Both the LME7 burner control and PME7 program module contain one parameter set. The parameter set in the LME7 burner control is always the one that is used for burner operation. The parameter set in the PME7 program module is simply a backup parameter set.

  • Page 69: Displaying The Flame Signal From The Lme7 Burner Control

    LME Series Technical Instructions Document No. LME-1000 Parameter Restore (PME7 -> LME7) Using the AZL23 Display Unit Use to overwrite the parameters in the LME7 with those previously saved in the PME7. 1. Press and hold the F and A buttons on the AZL23 until “CodE” is displayed, then release. 2.

  • Page 70: Displaying The Actuator Position / Pwm Blower Speed From The Lme7 Burner Control

    Technical Instructions LME Series Document No. LME-1000 Displaying the Actuator Position / PWM Blower Speed from the LME7 Burner Control The current position of the actuator (LME73…/LME75…) or speed of the PWM blower (LME71… with PME71.901A1) can be viewed from the LME7 burner control using the following procedure. 1.
  • Page 71 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 72 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 73: Introduction

    LME Series Technical Instructions Document No. LME-1000 Introduction The LME71 flame safeguard, when used with the PME71.901A1 program module, features an integrated, closed-loop PWM (pulse width modulation) blower control. This integrated control is used to modulate the speed of a PWM blower with firing rate. The LME71 transmits a PWM control signal to the blower, and then reads back the speed of the blower.

  • Page 74: Centrifugal Blower Fundamentals

    Technical Instructions LME Series Document No. LME-1000 Centrifugal Blower Fundamentals Since a centrifugal blower is the piece of machinery being controlled by the LME7, a brief mention of its basic characteristics is warranted. Specifically, there are three fundamental "fan laws" that a person working with such equipment should be aware of.

  • Page 75: Blower Speed Monitoring

    LME Series Technical Instructions Document No. LME-1000 Blower Speed Monitoring To help ensure that the burner is either operated at a safe fuel-to-air ratio or is shut down, the blower speed is constantly monitored while a flame is present. The speed is monitored in a way that nuisance shutdowns are eliminated, but fast shutdowns will occur if the speed deviation is large.
  • Page 76 Technical Instructions LME Series Document No. LME-1000 Tolerance Band 1 Tolerance Band 2 Name of Tolerance Band High Limit of Tolerance Band +1.0% to 5.0% +1.0% to 10.0% Low Limit of Speed Band -1.0% to 5.0% -1.0% to 10.0% Parameter to Adjust Width of Band 650.00 650.01 Maximum Blower Speed (P519)

  • Page 77: Commissioning The Lme7 When Using A Pwm Blower

    LME Series Technical Instructions Document No. LME-1000 Commissioning the LME7 when Using a PWM Blower After verifying that all PWM blower-related components are installed and wired correctly, the LME7 burner control can be programmed for the PWM blower application. Prerequisites Ensure that the PWM blower is a closed loop type, meaning that it is utilizing an onboard speed •...
  • Page 78 Technical Instructions LME Series Document No. LME-1000 8. Set the ignition (P0), low fire (P1), and high fire (P2) blower speeds with the burner off. These values are found in the 400 set of parameters. To set these parameters, use the following procedure: a.

  • Page 79: Adjusting P0, P1, And P2 Via The Lme7 Built-In Display

    LME Series Technical Instructions Document No. LME-1000 Adjusting P0, P1, and P2 via the LME7 Built-in Display 1. While in standby (OFF), press and hold the A button and either the + or - button for more than five seconds until “OFF” starts blinking. 2.

  • Page 80: Adjusting P0, P1, And P2 Via The Azl23 Display Unit

    Technical Instructions LME Series Document No. LME-1000 Adjusting P0, P1, and P2 via the AZL23 Display Unit 1. Log in at the Service or OEM access level. The display will say “400: Set”. Press the info button. 2. The display will say “run”. Give the LME7 a call for heat. The LME7 will proceed to start the burner. After prepurge is complete, the LME7 will slow the blower down to the preset ignition speed (P0).

  • Page 81: Additional Tips For Burners With Pwm Blowers

    LME Series Technical Instructions Document No. LME-1000 Additional Tips for Burners with PWM Blowers Most of the time, speed faults that are seen on the LME7 are caused by the PWM blower not being • able to decelerate quickly enough when the blower is being ramped down. If fast ramp times are not critical for the application, ramp times (parameters 522 and 523) can be increased and this should correct the issue.
  • Page 82 Technical Instructions LME Series Document No. LME-1000 Intentionally Left Blank Section 6 Page 10 SCC Inc.
  • Page 83 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 84 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 85: Troubleshooting Introduction

    LME Series Technical Instructions Document No. LME-1000 Troubleshooting Introduction The LME7 has an extensive list of fault codes to help clarify the nature of any fault. Section 7-2 describes every fault code in detail and gives guidance on how to correct it. When a fault occurs, the LME7 will alternate between displaying “Loc”...
  • Page 86 Technical Instructions LME Series Document No. LME-1000 Navigating the Fault History To navigate the fault history, use the following key strokes on the AZL23. • When the parameter number is flashing, press the “+” or “-” button to cycle through the list of faults (parameters 701-711).

  • Page 87: Complete Fault Code List

    Complete Fault Code List Fault Description of the Fault Corrective Action Code A flame failure occurred during lightoff. 1. Check the wiring of the ignition transformer, pilot valve, and main valve(s). 2. Ensure manual shutoff valves on the pilot gas line and main gas line are open. No flame at start-up 3.
  • Page 88 Fault Description of the Fault Corrective Action Code A flame failure occurred during normal operation. 1. Check the fuel / air ratio. Loss of flame 2. Check the flame detector signal in the presence of a known flame source. Replace the flame detector if it does not produce the anticipated signal.
  • Page 89 Fault Description of the Fault Corrective Action Code Check all of the switches wired into the safety loop on terminal X3-04.1. One of the switches opened, Safety loop open causing the fault. Fix the condition that caused the switch to open and reset the fault. The 4-20 mA input connected to terminal X65 is out of range.
  • Page 90 Fault Description of the Fault Corrective Action Code One or more PWM blower settings are not compatible. Make sure the following three conditions on the minimum and maximum speed settings are met. PWM blower parameterization error 1. 516.00 ≤ P0 ≤ 516.01 2.

  • Page 91: Other Common Faults

    LME Series Technical Instructions Document No. LME-1000 Other Common Faults Known Causes of Loc 10 Loc 10 is a catchall fault that can be caused by a variety of issues. All known causes of Loc 10 are listed below in Table 7-1. Table 7-1: All Known Causes of Loc 10 Cause # LME71/73/75...
  • Page 92 Technical Instructions LME Series Document No. LME-1000 LME7 LED is Flashing Red When the LED on the front of the LME7 is flashing red very quickly, this indicates that the LME7 has been placed into Diagnostic Mode. While being in Diagnostic Mode does not prevent successful operation of the burner, it does remove the status that is typically displayed by the LED, as well as causes operators to incorrectly conclude that the LME7 is damaged.
  • Page 93 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 94 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 95: Introduction

    LME Series Technical Instructions Document No. LME-1000 Modbus RTU and BACnet MS/TP Communication Introduction The physical connection from the LME7 burner control to the Modbus RTU or BACnet MS/TP system is made via an external OCI417.10 interface module. The OCI417.10 is compatible with all LME7…...

  • Page 96: Status Led

    Technical Instructions LME Series Document No. LME-1000 Connection to the BMS The connection from the BMS to the OCI417.10 is via terminal block. The physical medium is RS-485. Multiple RS-485 nodes may be connected in a daisy-chain. For long runs (typically greater than 1,000 feet) or noisy environments, termination may be required on the end node.

  • Page 97: Modbus Rtu Connection Details

    LME Series Technical Instructions Document No. LME-1000 Modbus RTU Connection Details Modbus RTU protocol selection and addressing is done using the PC tool OCI417 Configuration Utility (see next section). Supported addresses: 1-247 Supported baud rates: 2400, 4800, 9600, 19200, 38400, 57600 and 115200 Supported data bits: 8 Supported parity and stop bits: none (1 or 2 stop bits), odd (1 stop bit), and even (1 stop bit) Supported function codes: 3 (read holding registers), 4 (read input registers)

  • Page 98: Bacnet Ms/Tp Connection Details

    Technical Instructions LME Series Document No. LME-1000 BACnet MS/TP Connection Details BACnet MS/TP protocol selection and addressing is done using the PC tool OCI417 Configuration Utility (see next section). Supported addresses: 0-127 Supported baud rates: 9600, 19200, 38400, 57600, 76800 and 115200 Supported data bits: 8 Supported parity and stop bits: none (1 stop bit) Supported device instances: 0-4194302...

  • Page 99: Using The Oci417 Configuration Utility

    LME Series Technical Instructions Document No. LME-1000 Using the OCI417 Configuration Utility 1. To download the OCI417 configuration utility, go to the following website and click the “OCI417.10 Configuration Utility” link to download and install the software. http://www.scccombustion.com/flame.htm. 2. Once installed, double-click the icon to open the configuration utility. 3.
  • Page 100 Technical Instructions LME Series Document No. LME-1000 4. Use a mini-USB cable to connect the OCI417.10 to the computer, such as SCC part number AGA5-05M. A driver may self-install the first time a connection is made. The connected device will then be indicated on the screen. 5.

  • Page 101: Updating The Oci417.10 Firmware

    LME Series Technical Instructions Document No. LME-1000 Updating the OCI417.10 Firmware 1. From the OCI417.10 Configuration Utility, click File -> Update Device… 2. Locate the supplied update file with a .duf extension and click Open. 3. The device will automatically reboot and reconnect with the OCI417.10 Configuration Utility once the firmware update is complete.

  • Page 102: Modbus Mapping

    Technical Instructions LME Series Document No. LME-1000 Modbus Mapping ADDRESS ACCESS DESCRIPTION FORMAT NOTES PHASE Unsigned Int 16 FLAME INTENSITY Unsigned Int 16 MAINS VOLTAGE Unsigned Int 16 STARTUPS RESETTABLE Unsigned Int 32 STARTUPS TOTAL Unsigned Int 32 RELAY K12 CYCLES Unsigned Int 32 RELAY K11 CYCLES Unsigned Int 32...
  • Page 103 LME Series Technical Instructions Document No. LME-1000 Modbus Mapping ADDRESS ACCESS DESCRIPTION FORMAT NOTES 27 bit 2 INCREASE MODULATION (LR-OPEN) Boolean TERMINAL X5.03.3 27 bit 3 DECREASE MODULATION (LR-CLOSED) Boolean TERMINAL X5.03.2 27 bit 4 COMBUSTION AIR SWITCH (LP) Boolean TERMINAL X3.02.1 27 bit 5 LOW GAS PRESSURE SWITCH (Pmin)
  • Page 104 Technical Instructions LME Series Document No. LME-1000 Modbus Mapping ADDRESS ACCESS DESCRIPTION FORMAT NOTES HISTORY 7 ERROR LOAD Unsigned Int 16 255 IS NO LOAD RECORDED HISTORY 8 ERROR CODE Unsigned Int 16 HISTORY 8 ERROR STARTUPS Unsigned Int 32 HISTORY 8 ERROR PHASE Unsigned Int 32 PHASE IS 0 WHEN NO ERROR...

  • Page 105: Bacnet Mapping

    LME Series Technical Instructions Document No. LME-1000 BACnet Mapping ADDRESS DESCRIPTION UNITS ACTIVE TEXT INACTIVE TEXT PHASE NO UNITS FLAME INTENSITY PERCENT MAINS VOLTAGE VOLTS STARTUPS RESETTABLE NO UNITS STARTUPS TOTAL NO UNITS RELAY K12 CYCLES NO UNITS RELAY K11 CYCLES NO UNITS RELAY K2 CYCLES NO UNITS...
  • Page 106 Technical Instructions LME Series Document No. LME-1000 BACnet Mapping ADDRESS DESCRIPTION UNITS ACTIVE TEXT INACTIVE TEXT AV46 HISTORY 6 ERROR LOAD PERCENT AV47 HISTORY 7 ERROR CODE NO UNITS AV48 HISTORY 7 ERROR STARTUPS NO UNITS AV49 HISTORY 7 ERROR PHASE NO UNITS AV50 HISTORY 7 ERROR LOAD...

  • Page 107: Unused Inputs

    LME Series Technical Instructions Document No. LME-1000 BACnet Mapping ADDRESS DESCRIPTION UNITS ACTIVE TEXT INACTIVE TEXT BV27 FAN (M) CMD ON CMD OFF BV28 VALVE 1 (V1) CMD ON CMD OFF BV29 VALVE 2 (V2) CMD ON CMD OFF Unused Inputs Any inputs unused by the selected PME…...
  • Page 108 Technical Instructions LME Series Document No. LME-1000 Intentionally Left Blank Section 8 Page 14 SCC Inc.
  • Page 109 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 110 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...

  • Page 111: Acs410 Software Introduction

    LME Series Technical Instructions Document No. LME-1000 ACS410 Software Introduction The LME7 burner control can be completely programmed using either the AZL23 or a PC with the ACS410 software. Most people find that using the AZL23 is more convenient than the ACS410 for a “manual”...

  • Page 112: Software Installation

    Accept the license agreement and click “Next”. d. Select the folder where the ACS410 software will be installed. The default folder is C:\Program Files (x86)\Siemens\ACS410. Click “Next”. e. Select the folder where the ACS410 software shortcuts will be installed in the Start Menu.

  • Page 113: Connecting To A Pc

    LME Series Technical Instructions Document No. LME-1000 Connecting to a PC The following steps summarize the procedure for establishing communication between the LME7 and a PC. 1. An OCI410 interface module is required to connect the LME7 to a PC. Three different interface modules are available: Table 9-1: Available Interface Modules to Connect the LME7 to a PC Interface Module...

  • Page 114: Saving A Parameter Set To A Pc

    The default location for storing parameter sets is C:\Program Files (x86)\Siemens\ACS410\bkp. Notice that two files are created in this folder: one with a .bkp file extension and one with a .unl file extension. Both files are necessary in order to view the parameter set or restore it to an LME7.

  • Page 115: Uploading A Parameter Set To An Lme7

    LME Series Technical Instructions Document No. LME-1000 Uploading a Parameter Set to an LME7 The following steps outline the procedure for uploading parameter sets from a PC to an LME7. 1. Ensure that the ACS410 software is open, and the PC is connected to the LME7 at the service or OEM level.

  • Page 116: Creating An Lme7 Startup Report

    Technical Instructions LME Series Document No. LME-1000 Creating an LME7 Startup Report The following steps outline the procedure for saving, viewing, and printing a startup report to a 1. Open the ACS410 software. Instead of logging in, click the “Offline” button. Then click the “Backup”...

  • Page 117: Synchronizing The Lme7 And Pme Parameters

    LME Series Technical Instructions Document No. LME-1000 Synchronizing the LME7 and PME Parameters The ACS410 software can be used to synchronize the parameter set used by the LME7 and the backup copy stored on the PME chip. 1. Ensure that the ACS410 software is open, and the PC is connected to the LME7 at the service or OEM level.

  • Page 118: Saving And Viewing Trends

    Technical Instructions LME Series Document No. LME-1000 Saving and Viewing Trends The ACS410 software can be used to view and save trends. Trending enables a technician to easily view and quantify system behavior over time. The following steps outline the procedure for viewing and saving trends with the ACS410 software.
  • Page 119 5. Trending data is stored in the following location: C:\Program Files (x86)\Siemens\ACS410\tn. Each set of trending data creates two files: one with a .unl format and one with a .dtd format. Both files are necessary if the trend is to be viewed at a later time through the ACS410 software.

  • Page 120: Viewing The Status Screen

    Technical Instructions LME Series Document No. LME-1000 Viewing the Status Screen When connected to the LME7, the ACS410 can provide a status screen. This provides a useful summary of the LME7 inputs and outputs, as well as the operating state of the LME7. The following steps outline the procedure for viewing the ACS410 status screen.
  • Page 121 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 122 Section 1 Overview LME71 Wiring, Parameters, Section 2 and Phase Diagrams LME73 Wiring, Parameters, Section 3 and Phase Diagrams LME75 Wiring, Parameters, Section 4 and Phase Diagrams Section 5 Commissioning Section 6 PWM Blowers Section 7 Troubleshooting Section 8 Modbus Section 9 ACS410 Appendix A...
  • Page 123 LME Series Technical Instructions Document No. LME-1000 Appendix A: LME7 Application Guide Description The LME7 Application Guide includes programming, wiring, and operation examples of the control system for the most common applications. SCC Inc. Page 1 Appendix A...

  • Page 124: Honeywell Modutrol Iv Motor With The Lme75

    Technical Instructions LME Series Document No. LME-1000 Table of Contents Honeywell Modutrol IV Motor with the LME75 Introduction ........................... 3 Setup Procedure without Valve Proving ................. 3 Sequence of Operation without Valve Proving ............... 5 Setup Procedure with Valve Proving ..................7 Sequence of Operation with Valve Proving ................
  • Page 125 Honeywell Modutrol IV with the LME75 Introduction The Siemens LME75 burner control is designed specifically for use with a Siemens SQM4… or SQM5… series actuator. However, with some simple programming changes and the addition of only a few relays, the LME75 can be set up to safely and effectively control a Honeywell Modutrol IV motor.
  • Page 126 Technical Instructions LME Series Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) Figure A-1: Wiring a Honeywell Mod IV Motor to the LME75 (no Valve Proving) Appendix A Page 4 SCC Inc.
  • Page 127 LME Series Technical Instructions Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) Sequence of Operation without Valve Proving 1. The LME75 is in standby. All valves are closed and all relays are de-energized. All relay contacts are as shown in the electrical schematic. The Honeywell Modutrol IV motor (hereafter referred to as mod motor) is at the low fire position.
  • Page 128 Technical Instructions LME Series Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) 7. Main valve output X7-04.4 is energized in phase 50 (for piloted burners) or phase 40 (for non-piloted burners). Input X5-03.3 is energized, which has no effect. Output X2-09.3 is de-energized, so normally open contact CR-1B remains open, and relay CR-2 remains de- energized.
  • Page 129 LME Series Technical Instructions Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) Setup Procedure with Valve Proving 1. The following procedure should be used when valve proving is being utilized. 2. Set the following parameters in the LME75 as described below: Parameter 241 = 1 Parameter 259 = Greater than or equal to the running time of the Honeywell Modutrol IV motor being used...
  • Page 130 Technical Instructions LME Series Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) Figure A-2: Wiring a Honeywell Mod IV Motor to the LME75 (with Valve Proving) Appendix A Page 8 SCC Inc.
  • Page 131 LME Series Technical Instructions Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) Sequence of Operation with Valve Proving 1. The LME75 is in standby. All valves are closed and all relays are de-energized. All relay contacts are as shown in the electrical schematic. The Honeywell Modutrol IV motor (hereafter referred to as mod motor) is at the low fire position.
  • Page 132 Technical Instructions LME Series Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) 5. Output X2-09.3 de-energizes and output X2-09.2 energizes in phase 36. These actions de-energize relay CR-1 and energize relay CR-3. Normally open contact CR-1A opens, removing the connection that was keeping the mod motor to high fire. Since normally open contact CR-2 remains open, the mod motor drives to the low fire position.
  • Page 133 LME Series Technical Instructions Document No. LME-1000 Honeywell Modutrol IV with the LME75 (continued) 11. Output X2-09.1 is energized in phase 10 to drive the mod motor to low fire. Since the mod motor is already at the low fire position, the low fire proving switch is closed, and actuator feedback input X2-09.4 is energized.
  • Page 134 Technical Instructions LME Series LME-1000 PME75.811A1 Phase Diagram with Relays Phase Param. STARTUP OPERATION SHUTDOWN VALVE PROVING SAFETY Terminal Description Notes TIME 1 X3-04.5 Main Voltage X3-04.1 Safety Loop X5-03.1 Burner On X3-02.1 Air Pressure Switch Note 3 X5-01.2 Gas Pressure Switch(es) Note 4 X9-04.2 Valve Proving Pressure Switch...

  • Page 135: Two Flame Detectors

    LME Series Technical Instructions Document No. LME-1000 Two Flame Detectors Introduction When using a piloted line burner with a flame propagating in excess of three feet, two flame detectors are required by both NFPA 86 and CSA B149.3. These flame detectors are: 1.
  • Page 136 Technical Instructions LME Series Document No. LME-1000 Two Flame Detectors (continued) Wiring Diagrams Two Flame Rods (Any LME7) Two Flame Scanners (LME71/73) Appendix A Page 14 SCC Inc.
  • Page 137 LME Series Technical Instructions Document No. LME-1000 Two Flame Detectors (continued) Two Flame Scanners (LME75) One Flame Rod and One Flame Scanner (LME71/73) SCC Inc. Page 15 Appendix A...
  • Page 138 Technical Instructions LME Series Document No. LME-1000 Two Flame Detectors (continued) One Flame Rod and One Flame Scanner (LME75) Appendix A Page 16 SCC Inc.
  • Page 139 Intentionally Left Blank ...
  • Page 140 Technical Instructions LME-1000 June 11, 2019...

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