Siemens LMU64 Series Manuals

Manuals and User Guides for Siemens LMU64 Series. We have 1 Siemens LMU64 Series manual available for free PDF download: Basic Documentation

Siemens LMU64 Series Basic Documentation

Siemens LMU64 Series Basic Documentation (171 pages)

Boiler Management Unit (BMU)

Brand: Siemens | Category: Control Unit | Size: 1.24 MB

Table of Contents

Table of Contents
3
1 Overview

10
- Brief Description
  10
- System Concept
  10
- Features
  11
  - Safety Functions
    11
  - Supervision / Protective Functions for the Plant
    11
  - Auxiliary Modules (Clip-In)
    11
  - Dhw
    12
  - Heating Circuit
    12
  - System Application
    12
  - Operation / Service
    12
  - Parameterization
    13
  - Mains Transformer
    13
  - Other Features
    13
- Product Range
  13
- Field of Use
  13
  - Target Market
    13
  - Heating Plants
    13
  - Heat Generating Equipment
    13
- Notes on Product Liability
  14
- Notes on Environmental Protection
  14
  - Disposal Notes
    14
2 Product Range Overview

15
3 Functions

17
- Burner Control
  17
  - Program Selection
    17
  - Eeprom
    17
  - Forced Intermittent Operation
    17
  - Burner Control Program
    17
  - Sequence Diagram
    18
    
    Capacity Range < 70 Kw
    18
    
    Capacity Range 70
    18
    
    Capacity Range > 120 Kw
    19
    
    Description of Sequence Diagrams
    19
    
    Sequence Times
    20
    
    Standby
    20
    
    Startup
    20
    
    Shutdown
    22
    
    Home Run
    22
    
    Special Cases (Deviations)
    22
    
    Lmu
    24
    
    Parameterization of Speed Feedback Signal
    24
    
    Fan Parameters Accessible Via QAA
    25
    
    The Different Capacity Ranges
    26
    
    Setting the Fan Parameters During Startup and Shutdown
    27
    
    Speed Readjustment
    28
- Selection of the Compensation Variants
  30
  - Heating Circuits
    30
  - Room Setpoint
    32
  - Configuration of the Heating Circuits
    34
  - DHW Circuit
    35
- Acquisition of Actual Values
  37
  - Assignment of Analog Sensors
    37
  - Temperatures
    37
  - Display of Ionization Current
    38
- Supervisory Functions
  39
  - Temperature Limiter Function
    39
  - Flue Gas Temperature Supervision
    39
    
    Plausibility Check of Sensor
    39
    
    Function
    39
  - Electronic (S)LT
    40
    
    Handling Faults
    40
  - Flow Switch / Water Pressure Supervision
    42
    
    Function of Flow Switch
    42
    
    Function of Pressure Switch
    42
  - Pressure Sensor
    42
    
    Static Supervision
    43
    
    Dynamic Supervision
    44
  - Load Limitation
    45
  - Speed Limitation
    48
  - Limitation of Ionization Current
    48
- Boiler Control
  49
- Hydraulic System Management (HSM)
  55
  - Frost Protection for the Plant
    55
- Consumer Management (CM)
  56
- Electronically Controlled PWM Heating Circuit Pump
  61
  - General
    61
  - Introduction
    61
    
    Notes
    61
  - Task of ∆T Control with PWM Pump
    61
    
    First Stage Maximum Limitation of the Flow Temperature
    62
    
    Second Stage ∆T Limitation
    62
    
    Third Stage ∆T Supervision
    63
  - PWM Pump Control
    63
    
    H-Q Chart (Example)
    63
    
    Adaption of Modulating Pump to the Heating Plant
    64
  - Parametes of the PWM Pump (OEM)
    64
  - Preset Parameters
    64
  - Activation of PWM Pump Via a Configuration Byte
    65
  - Parameters of the PWM Pump (Installer)
    66
  - Parameters for Temperatures
    66
  - PID Controller Coefficients of Delta-T Supervision
    67
  - Summary of All ∆T Parameters
    67
  - Behavior in Different Operating Modes
    68
    
    Pump Overrun
    68
    
    Normal Operation (Heating Operation)
    68
    
    Reduced (Setback) Operation
    68
    
    Shutdown Mode
    68
    
    Heating up Phase
    68
    
    DHW Operation
    69
- Heating Circuit Control
  70
  - Attenuated Outside Temperature
    70
  - Composite Outside Temperature
    71
  - Type of Building Construction
    71
  - Heating Curves
    72
  - Generating the Demands for Heat
    73
    
    Time Switch
    74
    
    Room Thermostat
    75
    
    Combinations of RU and Room Thermostat / Time Switch
    76
  - ECO Functions
    77
    
    S / W Changeover
    77
    
    Automatic 24-Hour Heating Limit
    77
  - Quick Setback Constant (KON)
    78
  - Generating the Temperature Demands
    78
    
    With Fixed Value Control or Emergency Operation
    78
    
    With Weather Compensation
    78
4 Clip-In AGU2.500

79
- Functions
  79
  - General
    79
- Hydraulic Diagrams
  79
- Sensor Inputs (Analog Inputs)
  79
- Inputs / Outputs
  79
- Interfaces for the LMU
  80
- Sensor
  80
- Frost Protection
  80
- Overtemperature Protection
  80
  - Mixing Circuits
    80
- Determining the Flow Temperature Setpoint
  80
  - Handling the Locking Signal
    80
  - Handling the Forced Signal
    80
- Flow Temperature Control
  80
- Pump Control
  81
  - Pump Control with Pump Circuits
    81
  - Pump Control with Mixing Circuits
    81
  - Pump Overrun
    81
  - Pump Kick
    81
- Mixing Valve Control
  81
  - Position of Mixing Valve in the Idle State
    81
- Functional Test
  81
5 Clip-In Module OCI420

82
6 Clip-In Function Module Agu2.51X

89
- Functions
  89
  - General
    89
- Outputs
  89
  - Number of Available Outputs
    89
- Inputs
  90
  - Digital Input
    90
  - Analog Input
    90
  - Predefined Setpoint (Temperature Demand)
    90
  - Predefined Output
    91
- Sensor Input "Pressureless Header
  91
7 DHW Control (BWR)

93
- Boiler Temperature Setpoint During DHW Heating with Storage Tank
  93
- Systems
  93
- DHW Temperature Control
  94
  - Compensation Variants
    94
  - Position of Diverting Valve
    95
  - Storage Tank Systems
    95
  - Stratification Storage Tank
    96
- Instantaneous DHW System
  100
  - Notes
    100
  - Hydraulic Diagram
    100
- Operating Mode
  100
  - Outlet Temperature Control (FS-DHW Is Closed)
    100
  - Comfort Control (after FS-DHW Opening)
    100
- Aqua-Booster System
  103
  - Hydraulic Diagram
    103
- Operating Mode
  103
  - Outlet Temperature Control
    103
  - Comfort Control
    103
- Legionella Function
  104
- Special Functions
  105
  - Forced Signals
    105
  - Parameterization
    105
    
    Via PC Tool ACS420 and OCI490
    105
    
    Via QAA73
    105
    
    Via AGU2.361 / AGU2.303
    106
  - Programmable Input of the LMU
    106
    
    Modem Function
    106
    
    Warm Air Curtain Function
    106
  - Programmable Output of the LMU
    107
    
    Status Output
    107
    
    Alarm Output
    107
    
    Operational Status Signal
    107
    
    Switching off the External Transformer
    108
    
    Pump Output Second Heating Circuit
    108
    
    DHW Circulating Pump
    108
    
    Actuating Device with Warm Air Curtain Function Activated
    108
    
    Pump of Pressureless Header
    108
    
    Basic Function of Controller Clip-In Module
    108
    
    Actuating Device with Full DHW Charging Activated
    108
    
    Actuating Device When Analog Signal Exceeds Threshold
    109
  - Power Concept
    109
8 Basic Diagram

110
- Lmu
  110
9 Connection Diagrams

111
- Lmu
  111
- DHW Stepper Motor (Bipolar)
  112
- Agu2.104A109
  112
- Agu2.500A109
  113
- Agu2.500A209
  114
- Oci420A109
  115
- Oci420A209
  116
- Agu2.51X
  117
- Connecting Cable between OCI490
  118
- Mounting, Electrical Installation and Service
  119
  - Mounting (General)
    119
    
    Mounting the Lmu5X
    119
  - Ignition Device
    119
  - Terminals and Wiring
    119
  - Testing by the Customer
    120
10 Technical Data

121
- Lmu
  121
  - General
    121
  - Electrical Connection Data
    122
    
    Cable Lengths (LMU
    126
  - Connectors
    126
- Clip-In
  127
- Agu2.500
  127
  - Outputs
    127
  - Electrical Connections
    127
  - Input
    127
- Agu2.51X
  127
- External Components
  128
  - RAST5 Connectors
    128
  - Mains Transformer
    128
  - Fan with DC 24 V Motor
    128
  - Fan with DC Motor Operating on Mains Voltage
    128
11 Dimensions

129
- Lmu5X
  129
- Lmu6X
  130
- AGU2.500A109 / Agu2.51Xa109
  131
- Agu2.500A209
  132
- Oci420A109
  133
- Oci420A209
  134
- Mounting Plate for Clip-In Module
  135
12 Parameter List / Legend of Parameter Bit Fields LMU

136
- Parameter List
  136
  - Parameter List LMU
    136
    
    Temperatures
    136
    
    Switching Differentials
    137
    
    Controller Functions
    137
    
    Controller Times
    138
    
    Controller Coefficients
    138
    
    Pressures
    138
    
    Burner Control Fan
    139
    
    Burner Control Sequence
    139
    
    Burner Control Identification
    140
    
    Operating Data
    140
    
    MCI
    140
    
    Lpb
    140
- Lockout Position Storage
  141
  - Phase Designations / Numbers
    141
- Legend of Parameter Bit Fields LMU
  142
  - Controller Functions
    142
  - Burner Control Program
    145
  - Operating Modes
    147
  - Lpb
    147
13 Glossary of Abbreviations

148
- Constants
  148
- Variables
  148
14 Addendum: Hydraulic Diagrams BMU

149
- Hydraulic Diagrams
  149
  - Basic Diagrams
    149
  - Pump Circuit Extensions Via AGU2.500
    151
  - Mixing Circuit Extensions Via AGU2.500
    153
  - Zone Extensions
    156
  - Heat Generation Manager
    162
- Assignment of Hydraulic Diagrams to the Outputs of the LMU
  166

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