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Technical Instructions LMV Series

Document No. LV3-1000

Section 4 Page 12 SCC Inc.

Modulating Light Oil - Gas Pilot

(Fuel Train Options 10, 13)

Legend:

Pressure switch

Oil valve (main)

Stage 2 oil valve

Operating Mode

Parameter 201 (fuel 0) or 301 (fuel 1)

Fuel Train

Fuel Actuator

Air Actuator

VSD Speed Feedback (if activated)

Description

10 Lo Gp mod • • •

Modulating light oil, gas pilot ignition, electronically linked fuel-to-air

ratio

13 Lo Gp mod 2V • • •

Modulating light oil, gas pilot ignition, electronically linked fuel-to-air

ratio (OEM specific)

Contents3
Overview5
The Main Components of an LMV3 System5
LMV3 System Builder6
Control Panel Components6
Air Damper Assembly10
Gas Firing Rate Control Valve12
Oil Firing Rate Control Valve13
Actuator Accessories14
Variable Frequency Drive (VFD) Components14
Flame Scanner Accessories16
Mounting21
LMV3 Controller21
LMV3 Dimensions (Inches)21
AZL23 Dimensions (Inches)22
AZL23 Display22
AGM60 Dual Fuel Module23
AGM60 Dimensions (Inches)23
Important Safety Notes24
Approvals25
Wiring Introduction29
Terminals29
Numbering Scheme on White Line Voltage (RAST 5) Terminals of the LMV329
Numbering Scheme on Green Low Voltage (RAST 3.5) Terminals of the LMV329
Protective Earth30
Reference Ground30
LMV3 Terminal Descriptions31
LMV3 Terminal Layout31
AGM60 Terminal Descriptions37
AGM60 Terminal Layout37
Wiring Diagrams40
LMV3 Parameter Example with Indexes49
Parameters49
Sequence Diagrams66
Table of Contents79
Commissioning79
Pre-Requisites for Basic LMV3 Systems80
Pre-Requisites for LMV3 Systems with a VSD82
Configuring (Parameterization Of) an LMV3 with a Default Parameter Set83
- Modulating Gas - Direct Spark Ignition84
- Modulating Gas - Pilot Ignition 1 (Pilot between V1 and V2)85
- Modulating Gas - Pilot Ignition 2 (Pilot before V1 and V2)86
- Modulating Light Oil - Direct Spark Ignition87
- 2-Stage Light Oil - Direct Spark Ignition88
- 3-Stage Light Oil - Direct Spark Ignition89
- Modulating Light Oil - Gas Pilot90
- 2-Stage Light Oil - Gas Pilot91
- Counterclockwise Vs. Clockwise Rotation92
- Referencing “Closed” Vs. Referencing “Open”93
Transferring Parameter Sets Using the AZL Display95
Suggested Initial Light-Off for LMV3 Systems96
Suggested Ratio Control Curve Commissioning97
Example of Lmvx Curves Spreadsheet99
Additional Tips for Commissioning101
- Variable Speed Drive Control105
- Introduction106
- VFD and AC Induction Motor Fundamentals106
- Line Reactor Recommendation - VFD (HP) Vs Transformer (Kva)107
- Line Reactors107
- Output Wiring / Load Reactors108
- Braking Resistors109
- Shaft Current109
- Configuring Vfds for Use with the LMV3111
- Types of Vfds: Vector and Volt/Hz111
- Brushless DC Blowers (PWM Blowers)113
- Centrifugal Blower Fundamentals114
- Standardized Speed - Standardizing the LMV3115
  - Standardization Process for a 2-Pole Blower Motor (Values Are Approximate)116
  - Standardization Sequence116
  - Result of Standardization (2-Pole Blower Motor) and Interpolation117
- Blower Speed Monitoring120
- Blower Speed Monitoring Bands121
- Blower Speed Response During Operation122
  - VSD Blower Speed Response During Acceleration122
  - VSD Blower Speed Response During Deceleration123
  - Prerequisites124
  - Suggested Setup Procedure for the VSD Control – Parallel Positioning Application124
- Suggested Setup Procedure for the VSD Speed Shift127
- VSD Speed Shift – Analog Signal to % VSD Trim128
- Additional Tips for Burners with VSD Speed Shift131
- Additional Tips for Burners with VSD Control132
  - LMV3 Fault History Example with Indexes135
  - Troubleshooting Introduction135
  - Complete Error Code List136
  - Data Transmission161
  - Modbus161
  - Modbus Interface Settings161
  - Structure of Data Blocks161
  - Erroneous Access to Parameters of the LMV3162
  - Mapping Long Values162
  - Temporal Process of Communication163
  - Communication During the Internal Slave Handling Time164
  - Communication During the Slave’s Response Time164
  - Number of Addresses Per Message164
  - Temporal Process of a Data Inquiry164
  - Modbus Addresses165
  - Modbus Functions165
  - Overview Table165
  - Requirements for the Modbus Master165
  - Data Types170
  - Legend to Overview Table170
  - Modbus Address / LMV3 Parameter Cross-Reference Guide171
  - Changeover of Controller Operating Mode173
  - Bus Behavior in the Event of Burner Lockout174
  - Operating Modes174
  - Baud Rate of Modbus Interface175
  - Modbus Settings on the LMV3175
  - Parity of Modbus Interface175
  - Slave Address175
  - Activation of Modbus176
  - Preselected Output in the Event of Communication Breakdown176
  - Timeout in the Event of Communication Breakdown176
  - Error Handling177
  - Modbus in Connection with ACS410 / AZL2177
  - ACS410 Software Introduction181
  - Software Installation182
  - Available Interface Modules to Connect the LMV3 to a PC183
  - Connecting to a PC183
  - Saving a Parameter Set to a PC184
  - Uploading a Parameter Set to an LMV3185
  - Creating an LMV3 Startup Report186
  - Saving and Viewing Trends187
  - The ACS410 Trending Screen187
  - The ACS410 Status Screen189
  - Viewing the Status Screen189
  - Description193
  - LMV3 Application Guide193
- Fresh Air Damper196
- Introduction196
- LMV3 Fresh Air Damper Wiring196
- Procedure196
- Important Notes197
- Operation197
- Hot Standby on a Steam Boiler with an RWF55198
- Introduction198
- LMV3 Hot Standby Wiring198
- Procedure198
- Important Notes199
- Operation199
- Introduction200
- Low Fire Hold with an RWF55200
- Low Fire Hold Via Analog Output on a Steam Boiler201
- Procedure - Steam Boiler with an RWF55 with Analog Output201
- Low Fire Hold Via Analog Output on a Hot Water Boiler202
- Procedure - Hot Water Boiler with an RWF55 with Analog Output202
- Low Fire Hold Via 3-Position Output on a Steam Boiler203
- Procedure - Steam Boiler with an RWF55 with 3-Position Output (LMV37 Only)203
- Low Fire Hold Via 3-Position Output on a Hot Water Boiler204
- Procedure - Hot Water Boiler with an RWF55 with 3-Position Output (LMV37 Only)204
- Behavior of Contact K6 When Using an RWF55 for Low Fire Hold205
- Example205
- Operation205
- Introduction206
- Option 1: on Startup with Skp25'S on both the Pilot and Main Gas Trains206
- Option 3: Pilot Valve Proving on Startup and Main Valve Proving on Shutdown206
- Pilot Valve Proving206
- Procedure206
- Option 1 Piping and Electrical Schematics208
- Option 2 Piping and Electrical Schematics210
- Option 3 Piping and Electrical Schematics212
- Purge Proving214
- LMV3 Purge Proving Wiring Diagram214
- Revert to Pilot - LMV37 Only216
- LMV3 / RWF55 Revert to Pilot Wiring216
- Sequence of Operation217
- Critical RWF55 Settings for Operation Example219
- Operation Example219
- Stack Dampe221
- LMV3 Stack Damper Wiring221

Brand	Siemens
Model	LMV3 series
Category	Control Unit
Language	English

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