Siemens LMV5 BMS
Manufacturer: Siemens Combustion Controls
Product: LMV5
Model:
Class: MODBUS
Updated: 2025-06-20
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Registers
| # | Name | Unit | Description |
|---|---|---|---|
| 1 | Phase | Stage of operation | |
| 2 | Position of currently active fuel actuator | ° | Fuel servo position |
| 3 | Position of air actuator | ° | Air servo position |
| 4 | Position of auxiliary actuator 1 | ° | |
| 5 | Position of auxiliary actuator 2 | ° | |
| 6 | Position of auxiliary actuator 3 | ° | |
| 7 | Manipulated variable for variable speed drive | % | |
| 8 | Current output | % | Load |
| 9 | Current setpoint - temperature | °F | Setpoint |
| 10 | Current setpoint - pressure | psi | Setpoint |
| 11 | Actual value - temperature | °F | Actual |
| 12 | Actual value - pressure | psi | Actual |
| 13 | Flame signal | % | Flame Signal |
| 14 | Current fuel throughput | 0..65534 | Flow meter reading |
| 15 | Current O2 value (LMV52...) | % | Exhaust O2% |
| 16 | Startup counter total | # | total number of start ups |
| 17 | Hours run counter | h | Run hours |
| 18 | Current error: Error code | hex | |
| 19 | Current error: Diagnostic code | hex | |
| 20 | Current error: Error class | . | |
| 21 | Current error: Error phase | . | |
| 22 | Temperature limiter OFF threshold | °F | Cold plant start temperature to see what boiler internal water temperature is currently |
| 23 | Supply air temperature (LMV52...) | °F | Ambient Air Temp |
| 24 | Flue gas temperature (LMV52...) | °F | Flue gas temperature |
| 25 | Combustion efficiency (LMV52...) | % | |
| 26 | Inputs (bits) | . | |
| 27 | Outputs (bits) | . | |
| 28 | Operating mode with load controller | . | Load controller type |
| 29 | Selection of manual or automatic operation | . | Auto, Manual, Manual OFF |
| 30 | Operating mode in Remote mode. Auto, Remote ON, Remote OFF | . | |
| 31 | External setpoint W3 Temperature | °F | Remote Setpoint |
| 32 | External setpoint W3 Pressure | psi | Remote Setpoint |
| 33 | Predefined output mod. / multistage | % | |
| 34 | Setpoint W1 Temperature | °F | Local Setpoint W1 |
| 35 | Setpoint W1 Pressure | psi | Local Setpoint W1 |
| 36 | Setpoint W2 Temperature | °F | Local Setpoint W2 |
| 37 | Setpoint W2 Pressure | psi | Local Setpoint W2 |
| 38 | Startup counter gas (adjustable to zero only) | # | |
| 39 | Startup counter oil (adjustable to zero only) | # | |
| 40 | Startup counter total (adjustable to zero only) | # | |
| 41 | Startup counter total (read only) | # | |
| 42 | Fuel volume gas | ft³ | |
| 43 | Fuel volume oil | gal | |
| 44 | Number of lockouts | # | |
| 45 | Extra temperature sensor (from AZL5... version V4.10 or later) | °F | |
| 46 | Min-output gas | % | |
| 47 | Max-output gas | % | |
| 48 | Min-output oil | % | |
| 49 | Max-output oil | % | |
| 50 | Load limitation enduser (modulating) | % | |
| 51 | Load limitation enduser (multistage) | . | |
| 52 | Temperature limiter switching differential ON | % | Cold Plant Active |
| 53 | Type of fuel | . |
Notes
The LMV5 Burner / Boiler Management System (BMS) is ideally suited for use with steam boilers, hot water boilers, thermal fluid heaters, and industrial burners. Connect Omron converter : (7) SG -> ezeio common (9) SDA -> ezeio D0 (12) SDB -> ezeio D1