Lamtec VMS Series User manual

www.lamtec.de
Sensors and Systems for Combustion Technology
Manual
Fuel/Air Ratio Control System VMS

2
Table of Contents
Table of Contents
1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity of these Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 How to Use These Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.2 Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.3 Correcting Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.2 Purpose Internal Firing Rate Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.3.3 Purpose of Internal O2Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 For Your Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Operating Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Range Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4 Internal Firing Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5 Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.8 Flying Curve Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.9 Integrated Power Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.10 4 or 8 Curve Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.11 Direct Connection to R. P. M. Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.12 Fail-Safe Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.13 Pre-purge Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.14 Energy-saving Mode for Scrolling Text Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.15 Separate Ignition Point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.16 Integrated O2Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.1 Significance of ID Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.2 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.3 Configuration Sticker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.4 Configuration Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Conditions On Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 Assignment of Sockets in Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Configuration Cards (Examples) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.3 Processor Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.4 Power Supply Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.5 Plug-in P.C.Card for Continuous Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.1 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.2 Access Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.3 Password Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3.4 How to Change the Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3.5 Changing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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Table of Contents
5 Firing Rate Controller (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.1 Enter Setpoint of Firing Rate Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.2 Operating Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.3 Control by Atmospheric Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1.4 Setpoint Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1.5 Start-up Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.1.6 Thermostat and Control Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1.7 Manual Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2 Control Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.1 Meaning of the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.2 How to Adjust the Burner Firing Rate Controller . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.3 Control Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3 Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.1 Before Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.1.1 Setting the Limit Switches of the Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.2 Function Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.3 Significance of Digital Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.4 Adjusting Control Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.4.1 Operation Of Control Elements For Potentiometer Adjustment - Limit Switch
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.5 Programming of Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.5.1 Programming of Fuel/Air Ratio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.5.2 Entirely New Curve - Clear Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.5.3 Programming 1st Point (Separate Ignition Point). . . . . . . . . . . . . . . . . . . . . . . . 36
6.5.4 Programming While The Burner Is Running . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.5.5 Programming While The Burner Is Stationary . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.5.6 Programming 2nd to 20th Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.5.7 Programming Last Top Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.5.8 Saving Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.5.9 Check Monitoring Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5.10 Adding Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.5.11 Change Curve Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.6 O2Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.6.1 Automatic Function Monitoring During Operation . . . . . . . . . . . . . . . . . . . . . . . 44
6.6.1.1 Adjusted The Integrated O2 Controller (Optional) . . . . . . . . . . . . . . . . . . . . . . . 44
6.6.1.2 Test During Burner Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.6.1.3 O2Monitoring Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.6.1.4 O2Limit Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.6.1.5 Dynamic Probe Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.6.1.6 Probe Blockage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.6.1.7 Correction Output Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.6.2 Control Strategy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.6.2.1 With Pre-setting For Firing Rate Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.6.2.2 Extended Control Strategy (Air Shortage) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.6.3 Connecting the O2Measurement Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.6.3.1 Via Analogue Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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Table of Contents
6.6.4 Operating Control and Displays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.6.4.1 Mode Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.6.4.2 Calling up O2Trim Text Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.6.5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.6.5.1 Correction Output Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.6.5.2 Enter the O2setpoint curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.6.5.3 Changing the O2 setpoint curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.5.4 Calling up the Set Correction Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.5.5 Calculation Of Control Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.6.5.6 Lag time (Parameters 898 / 900) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.6.5.7 P-factor (Parameter 899) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.6.5.8 Setting a Base Value for "Deactivated controller” and "Air shortage” . . . . . . . . 57
6.6.5.9 Base Value For Inactive O2 Trim/Insufficient Air . . . . . . . . . . . . . . . . . . . . . . . . 57
6.6.5.10 What Additional Modes mean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.6.5.11 How to Reset od. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.6.5.12 Calling up O2Trim Text Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.7 Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.7.1 Set Correction Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.7.2 CorrectionType1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.7.3 Correction Type 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6.7.4 Correctional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.7.4.1 Correction Range Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.7.4.2 Calling up the Set Correction Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.7.4.3 Edit Correction Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.7.5 Correction Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.8 Shut-off Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.8.1 Run to Shut-off Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.8.2 Check Shut-Off Limits on TPS Output of VMS . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.8.3 Check Shut-Off Limits on VMS Continuous Output . . . . . . . . . . . . . . . . . . . . . . 69
6.8.4 Checking O2Influence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6.8.5 Tolerance Limit in Direction Air Deficiency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.8.6 Protocol Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
7 Tips and Tricks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.1 Programming 1st Point (Ignition Firing Rate Point) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.2 Programming While The Burner Is Running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.3 Programming While The Burner Is Stationary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.4 Reversing the Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.5 Commissioning Equipments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.6 Adjusting Firing Rate Individually. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.7 Entering an Initial Curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.8 Approaching Control Elements From One Side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.9 Enter Set Point Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.10 Entering the Highest Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.11 Start Without Pre-Purge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.12 Ignition Delay During Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.13 Set Firing Rate Automatically. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.14 Entering the Fuel/Air Ratio Control With The Burner Stationary . . . . . . . . . . . . . . . . . . 78
7.15 Recirculation Damper Closed During Pre-purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7.16 Switching the Burner On Again Through the Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . 78

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Table of Contents
8 System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.1 Mode Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.1.1 Mode Abbreviations Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.1.2 O2 Trim Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.1.3 ES Mode (Set - Control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.1.4 Proceed with Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.2 Check Sums - Hours of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.1 Calling the Checksums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
8.2.2 Calling up the Hour Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
8.3 Messages / Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.3.1 What Happens if There is a Fault? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.3.2 Reading Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.3.3 Resetting Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8.3.4 Recalling Fault History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.3.5 What Happens if a Fault Occurs in the O2Controller? . . . . . . . . . . . . . . . . . . . 85
8.3.6 Air Deficiency Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.3.7 Resetting O2Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.3.8 Calling Fault History O2trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.3.9 Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9.1 Changing EPROMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9.1.1 Replacing a Data EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9.1.2 Re-enter Range Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9.2 Installing a New Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9.2.1 Procedures for New Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
10 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.1 Wiring According to EMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.1.1 Shields Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.1.2 PE Busbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.1.3 Control Cabinet Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.1.4 Shielding Cables from the Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.2 Feedback at Three-Point-Step Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.2.1 Connect with Positive Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.2.2 Fail-Safe Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
10.3 External Switching of the Fuel Motors/ Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
10.4 Changing Control Drives / Potentiometers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
10.4.1 How to replace a motor with LAMTEC pre-calibration. . . . . . . . . . . . . . . . . . . 115
10.4.2 How to Replace a Complete Control Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
10.4.3 How to Replace a Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
10.5 Schalter und Tastenkombination der Bedieneinheit. . . . . . . . . . . . . . . . . . . . . . . . . . . 116
10.5.1 Front Panel VMS/FMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
10.5.2 O2Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
10.6 Process Sequence Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
10.7 Wiring of the Analogue Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
10.8 Connecting Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
10.9 R. P. M. Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
10.9.1 Direct Connection to R. P. M. Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

6
Table of Contents
10.9.2 Selection of a Suitable R. P. M. Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
10.10 Connection Diagram Relay Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
10.11 Modem Connection Plan for Remote Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
10.12 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
10.13 Accessories and Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
10.14 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
10.15 Protocol Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
10.16 O2Setpoint Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

7
1 General Information
1 General Information
1.1 Validity of these Instructions
This instructions apply to the Fuel/Air Ratio Control System VMS 4 and VMS 5 in any config-
uration.
The software-related information relates to software version v5.8. The software version can
be found on the label of the programme EPROM. In case of doubt ask the LAMTEC Service
- phone: [phone] or email: support @lamtec.de
If you use another software version as the version mentioned above, some of the described
functions may not be available or some function which are available with your software version
may not be described in this manual.
The units conform to the following standards and regulations:
VMS: EN 298 (checked against this)
EN 230 (checked against this)
TRD 411
TRD 412
TRD 604
EMC Directive
Low Voltage Directive
Gas Appliance Directive
TÜV test symbol: TÜ 12 / 97 01 74
CE-0085 AS 0254

8
1 General Information
1.2 How to Use These Instructions
1.2.1 Purpose
This manual consists of all necessary information for its designated use.
Additional information such as configuration examples, application possibilities, software set-
tings, etc can be found in separate publications.
Special information which involves optional components for this device are described in a sep-
arate print.
1.2.2 Conventions
1.2.3 Correcting Faults
Information regarding localisation of errors and its remedies as well as a list of fault codes,
fault text and help can be found in chapter 8.1.4 Proceed with Programming
This chapter, makes no claim as to the completeness of the information. If the actions de-
scribed do not lead to the desired result, the unit or parts of the unit (e.g. front panel etc.) must
be changed. If the fault still occurs, it is probably a plant-specific fault.
NOTICE
You can download the up-to-date version of these instructions from http://www.lamtec.de
as a PDF File.
You will find the version number at the backside of this document:
For example:
DLT 1015-08-aEN-017
DLT 1015 = document number
aEN = print version and language (EN for English)
017 = version number
The figures and letters in brackets (1), (2), (3), (4), (5),
(6), (7), (8), (A) and (B) relate directly to the picture of
the front panel. They identify the part on which the spec-
ified action is to be performed or on which a reaction
can be seen.
The lines below the procedural instruction describe the
reaction of the system or unit following the operation.
If you now follow the operations step by step, paying
attention to the instructions, you will automatically be
working correctly. If any of the operations indicated do
not occur, there is a fault with the unit or the system.
You should correct the fault first before proceeding.

9
1 General Information
1.3 Purpose
1.3.1 Purpose
Intended purpose VMS 4/VMS 5
The VMS 4 as well as VMS 5 is a control unit for combustion system.
Brief description
The VMS 4 adjusts up to four control elements as a function of a control variable (generally
the burner firing rate) according to freely programmable curves.
The VMS 5 adjusts up to 5 control elements as a function of a control variable according to
freely programmable curves.
2 sets of curves (e.g. for oil or gas) can be filled as standard, with the option for 4 or 8 sets of
curves.
Examples of possible control elements:
– Combustion air damper
– Combustion air fan
– Fuel quantity
– Atomiser steam
– Re-circulation fan
– Flue gas damper
– Flue gas fan
Up to 20 points can be programmed for each channel. The display is relative between 0 and
999.
The VMS has two correction inputs for shifting the setting curves, allowing a feedback control
(e.g. O2trim unit) to be connected up.
Each output is freely configurable, either three-point step control element output for direct ac-
tuation of a motor or constant output (on the VMS 5 the 5th channel is always constant). The
constant output can be set to any of the following variables:
– Current signal 0 …20 mA
– Current signal 4 …20 mA
– Voltage signal 0 …10 V
The VMS 4 has two correction inputs for shifting the setting curves, allowing a feedback con-
trol (e.g. O2trim unit) to be connected up.
The VMS has one serial interface for remote control/ display via PC (Windows software avail-
able separately) and for connection to other system components via BUS (e.g. fault message
system, O2trim). Connections for Interbus-S, PROFIBUS, Modbus and CANopen are availa-
ble as options. Other BUS systems on request.
The VMS constantly monitors its own functioning and that of the control elements connected.
Each analog output (control variable and feedback or correction) is freely configurable via
plug-in cards.
Alternatively:
– Potentiometer (1 - 5k)
– Step input (DPS)
– Current signal 0/4…20 mA
– Namur transmitter
– PT100

10
1 General Information
The operating states are predefined in the VMS through potential-free contacts
– Burner on
– Control enabling
– Pre-purge
– Recirculation enabling
– Flame signal
– Fuel selection
The unit is of error-proof construction.
1.3.2 Purpose Internal Firing Rate Controller
This software option enables the calculating of the burner's required firing rate setting contin-
uously for a specified setpoint value (referred e.g. to temperature or pressure), through com-
parison with the actual value. This firing rate setting can be notified internally to the electronic
fuel/air ratio control as the specified value.
1.3.3 Purpose of Internal O2Trim
This software function makes it possible to regulate one or several actuators independently of
a switched-on O2actual value. By using a self-optimising controller strategy, it is also possible
to regulate burners with frequent firing rate changes.

11
2 For Your Safety
2 For Your Safety
The following symbols are used in this document to draw the user's attention to important safe-
ty information. They are located at points where the information is required. It is essential that
the safety information is observed and followed, and that applies particularly to the warnings.
DANGER!
This draws the user's attention to imminent danger. If it is not avoided, it will result in death or
very serious injury. The plant including its surroundings could be damaged.
WARNING!
This draws the user's attention to the possibility of imminent danger. If it is not avoided, it may
result in death or very serious injury. The plant including its surroundings could be damaged.
CAUTION!
This draws the user's attention to the possibility of imminent danger. If it is not avoided, it may
result in minor injuries. The plant including its surroundings could be damaged.
NOTICE
This draws the user's attention to important additional information about the system or system
components and offers further tips.
The safety information described above is incorporated into the instructions.
Thus, the operator is requested to:
1 Comply with the accident prevention regulations whenever work is being carried out.
2 Do everything possible within his control to prevent personal injury and damage to prop-
erty.

12
3 Operation
3 Operation
3.1 Digital Inputs
Digital inputs VMS
For the VMS to work in accordance with the requirements of the combustion plant, the status
signal of the plant must be reported to the VMS.
These are:
– Burner start-up
– Control release
– Pre-purge signal
– Recirculation release
– Flame signal
– Fuel specification
For application of burner control, the VMS produces 3 messages via relay:
– Fault
– Ignition position
– All channels on highest value (high settings)
3.2 Operating Description
(For example chart, see Appendix)
WARNING!
The operating sequence described relates to a usual configuration of the unit. Depending on
how the parameter of the device is configurated, this can result in a somewhat different (see
appendix) sequence.
A signal is first sent to terminal 2 (burner ON), indicating when the burner has to start. The
display mode changes from "AU"(off) to "BE"(ready). The flue gas damper goes to "OPEN"
mode. This is followed by the pre-purge signal (terminal 3). Continuous ouput runs on the
highest programmed point. Three-step-point outputs receive a continuous "OPEN" signal and
run to the limit switches.
The mode display changes to "VO" (pre-purge). The recirculation channels go to open only
when a signal is applied to terminal 6 and the assigned channel, generally the air valve, is 75%
open. If there is to be no separate recirculation valve delay, a continuous signal can be applied
to terminal 6. The recirculation valve delay is then automatic. Once all active channels have
reached their uppermost point, the high firing rate relay picks up. The fuel channel is then al-
ready going to the ignition position.
During pre-purge, the VMS checks the "CLOSED" and "OPEN" positions of each actuator. On
completion of the pre-purge period (removal of the signal from terminal 3), the air and recircu-
lation channels will close (air to the ignition point and recirculation fully closed). The mode dis-
play changes to "CLOSED". The ignition-position relay then picks up. The flue-gas valve
remains open, or the flue-gas fan remains on top rotational speed.
Following completion of ignition, a signal is applied to terminal 8 (flame signal). The flue-gas
channel goes to the programmed point. The firing rate displayed continues to be the firing rate
at the ignition firing rate point. The mode display changes to "GL" (base firing rate). A signal
to terminal 6 then prompts the recirculation channel to go to the programmed point.

13
3 Operation
Correction is active. The controller remains in the base firing rate position until a control ena-
bling signal (terminal 4) is given. Once control is released, the VMS tracks the externally ap-
plied firing rate. A current signal proportional to the position of the fuel/air ratio control is
emitted as internal firing rate (not on VMS 5). The mode display goes out.
3.3 Range Limits
In the 1st pre-purge after ’Clear memory’, the VMS determines the maximum range of travel
for each control element and stores this automatically. If no ranges limits have yet been deter-
mined, the setting (in the case of constant outputs the feedback setting) in pre-purge stands
at 0 and 999 points respectively. At all further starts a check is made to see that these range
limits are correct. Should the limit switches be shifted or the frequency converter setting
changed after programming, the range limits must be re-entered.
If the range limits cannot be determined automatically, they can also be entered manually by
using parameters. If the VMS has no existing range limits, it automatically takes the top and
bottom point of the curve as the limit. It then does not go beyond this.
3.4 Internal Firing Rate
The internal firing rate is the firing rate value at which the fuel/air ratio control currently stands.
It therefore corresponds indirectly to the output of the burner.
The internal firing rate is displayed in addition to the external firing rate signal.
In the ’firing rate value’ position therefore both the external firing rate (left-hand) and the inter-
nal firing rate (right-hand) are displayed.
The value of the internal firing rate can be outputted via the monitor output, in order to connect
further units (e.g. O2trim, only on VMS 4). When connecting other units, it must be remem-
bered that the signal in itself is not error-proof.
3.5 Manual Mode
When switching over to ’firing rate value’ with the burner running the burner firing rate can be
set by the VMS. The firing rate value can then be adjusted with the channel 1 toggle switch.
The system follows this firing rate value in the fuel/air ratio control.
Operating a switch other than channel 1 causes the unit to exit manual mode again.
3.6 Parameter Settings
The person commissioning the unit can adjust various functions of the VMS by using param-
eters (e.g. post-purge time). The parameters are classified into various safety levels. With the
exception of the lowest safety level these are accessible only with a password. The parameter
settings can be undertaken both on the unit itself and by using a PC and Windows software.
3.7 Correction
The VMS has 2 correction inputs. An analog signal (0/4 … 20 mA) can be connected to these
for shifting the set curves (e.g. for O2correction or air temperature correction). The assign-
ment of the correction to the individual output channels and the mode of operation can be ad-
justed by parameters.

14
3 Operation
3.8 Flying Curve Change
If the select signal for the curve sets is changed whilst in operation, the VMS goes to fault 351.
With this option, however, it allows changing from one curve set to another.
The settings change abruptly.
The band monitorings are replaced for a period of 30 seconds by running direction monitoring.
After 30 seconds the control elements must have reached their new value.
3.9 Integrated Power Control Unit
An integrated power control unit is also available as an option. Where this (option) is used the
actual temperature or the actual pressure is directly switched instead of the firing rate signal.
The control parameters are adjusted via parameters. It is also possible to change the setting
(daytime/night time operation) and to control the atmospheric conditions by switching in the
outside temperature.
The integral output controller is a PID controller with special combustion technology functions.
It can be used as a fixed-value controller or as a weather-dependent controller. The following
signals can be set:
– Actual value (analogue)
– External temperature or some other analogue signal for target value shifting (only in
weather-dependent controllers)
– Target value switching (via zero-potential contact)
Combustion enabling by the output controller takes place internally in the VMS
Boundary values that switch the burner on and off, need to be set via parameter setting. In this
case, the startup signal is removed internally from VMS via the output controller module.
The operator is alerted by the display (running text) that the output controller refuses to enable
a startup.
3.10 4 or 8 Curve Sets
The VMS has 2 curve sets as standard. 4 or 8 curve sets may be used, as an option.
3.11 Direct Connection to R. P. M. Sensor
An output for controlling the speed of a combustion air fan or a re-circulation fan etc. can be
monitored by switching the pulse output of a Namur transmitter directly to the VMS.
3.12 Fail-Safe Feedback
Continuous outputs and three-point step outputs have different feedback requirements.
In the case of continuous outputs comparisons are made between output and feedback values
in or to check the plausibility. The units therefore do not have to be intrinsically error-free in
order to form the feedback signal. For availability reasons (minimisation of interference) the
reproducibility of the values should be as good as possible.
For technical reasons this method cannot be used in the case of three-point step outputs. For
this reason TÜV approved potentiometers must be connected directly as feedback to the
VMS. These potentiometers must positively render the position of the damper.

15
3 Operation
3.13 Pre-purge Limit
Normally during pre-purge each control element runs as far as it’s uppermost stop. Now, by
parameters, a limit can be set for each channel that is not exceeded during pre-purge.
3.14 Energy-saving Mode for Scrolling Text Display
The brightness of the display can be adjusted to the ambient light conditions by parameters.
In addition the display can be set to automatically revert to the lowest brightness level if not
operated within a given period of time.
3.15 Separate Ignition Point
In the standard version the ignition point is situated outside the accessible range in order to
set a separate fuel/air ratio. By using parameters, however, the ignition point can be adjusted
so that it lies on the fuel/air ratio control curve.
3.16 Integrated O2Trim
– optimises combustion system
– saves fuel
– minimises pollutants
The main purpose of O2trim is to compensate for combustion variables that affect combus-
tion. In addition, the O2trim system monitors the combustion's fuel/air ratio. A message is out-
put at once if it strays outside the permitted limits.The following are the main perturbing factors
that affect combustion:
The O2trim unit is implemented as a free-standing software module. The unit compares the
residual oxygen content in the exhaust gas of a combustion system measured by the LT1/LT2
Lambda transmitter (actual value) with the optimum residual oxygen content (target value).
The target values are stored in the instrument in the form of an
installation-specific curve. The control unit applies a correction until the actual value corre-
sponds to the target.
The calculated output value of the O2trim module is transmitted to the fuel/air ratio control
module as a correction input signal.
Air: Fuel: System: Mechanical systems:
Temperature Calorific value Burner Mechanical hysteresis
Pressure Temperature Boiler (free play)
Humidity Viscosity
Calorific value Density
Gas pressure fluctu-
ations

16
4 Settings
4 Settings
4.1 Inputs
4.1.1 Significance of ID Number
The ID number comprises of 8 characters, e.g. 664 V 0010.
The two figures before the letter denote the unit, in this case a VMS 4.
The letter denotes whether the unit is a VMS or a . The penultimate figure provides information
on the unit hardware.
It also determines which connection diagram applies (see chapter 10.8 Connecting Dia-
grams).
4.1.2 Inputs
The inputs can be configured on the backplane by plug-in configuration cards. Any of the fol-
lowing can be connected up to each input:
– a potentiometer in range from 1 ... 5 k
– a current signal 0 … 20 mA or 4 … 20 mA
– a step signal (OPEN/CLOSE-commands)
– a frequency signal (Namur transmitter), for details see appendix
– a PT 100 element
– flame sensor module (in preparation)
There is a plug-in card for each configuration. This is inserted into the respective socket in or-
der to configure the input.
4.1.3 Configuration Sticker
The factory setting is entered on a sticker on the side of the unit.This corresponds either to the
customer data or, if nothing was specified, the standard setting (see condition on delivery).The
EEPROM checksums and thereby the software version are also entered on this sticker, to-
gether with the configuration number and hence the hardware setting.

17
4 Settings
4.1.4 Configuration Number
The configuration number is a 15-digit number, constructed according to a fixed code.
K = Channel assignment f = Input voltage a, b, or d =
Feedback, correction
and firing rate
C:
Y = 1 Recirculation X = 1 230 VAC X = 1 Potentiometer
input 1k...5 k
0 = unoccupied
Y = 2 Fuel X = 2 115 VAC X = 2 continuous
signal 0/4...20mA
2 = continuous signal 0/
4...20mA
Y = 3 Air X = 3 24 ACV X = 3 TPS input 7 = mixed signal
4...20mA
Y = 4 Flue gas X = 5 Special voltage X = 4 Impilseingang
(Drehzahlmesser)
9 = O2actual value as
0/4...20mA
Y = 5 mech. fuel/air
ratio control
X = 5 PT 100-input
y = 6 Steam X = 6 Flame sensor
input (only on red.
feedback channel 4)
X = 8 continuous
signal with 24 V
supply for transducer
X = 0 unoccupied

18
4 Settings
4.2 Conditions On Delivery
All units are set according to the order. Settings not evident from the ID number or configura-
tion number must be indicated separately.
In particular:
Outputs
– whether continuous or three-point step
– whether 0…10 V, 0/4 … 20 mA
– position of the outputs in the event of fault
Inputs, Firing rate, Feedback
– whether potentiometer or 0/4 … 20 mA or step
– whether inputs are used double (redundant) and if so, which (possible only if the
integrated power control unit is not used)
– whether special plug-in configuration cards (Pt100, Namur transmitter) are used?
Correction input
– 0 . ..20 or 4 ... 20 mA
– Mode of operation, on which channel, upward or downward shift (modifiable only via soft-
ware)
4.2.1 Assignment of Sockets in Inputs
Fig. 4-1 Backplane: Assignment of sockets to inputs

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4 Settings
4.2.2 Configuration Cards (Examples)
Fig. 4-2 Example: Configuration card
4.2.3 Processor Card
Fig. 4-3 Processor card
NOTICE
Continuous channels must have all be fitted with additional cards from channel 1 onwards