Siemens LMV37.4 Series Basic Documentation page 6

6/235
Building Technologies Division
Industry Sector
7.2.4 Flame intensity ............................................................................................... 37
7.2.5 Supervision of flame detector ........................................................................ 37
7.3 Digital inputs .................................................................................................. 38
7.3.1 Safety loop X3-04 pin 1 and 2 ....................................................................... 38
7.3.2 (Burner flange) X3-03, pin 1 and 2 ................................................................ 39
7.3.3 Input for external controller (ON / OFF) X5-03, pin 1 .................................... 39
7.3.4 Inputs X5-03 pin 2 and 3 (Open / Close or stage 2 / stage 3) ........................ 39
7.3.5 Air pressure switch (APS) X3-02 ................................................................... 40
7.3.6 Gas pressure switch valve proving (P LT) - or heavy oil direct start X9-04 .. 41
7.3.7 Gas / oil pressure switch-min (Pmin), start release gas X5-01 ..................... 43
7.3.8 Setting the time for making the pressure switch test ..................................... 44
7.3.9 Gas / oil pressure switch-max (Pmax) / or POC contact, start release oil X5-
02 ................................................................................................................... 45
7.3.10 Reset X8-04, pin 1 ......................................................................................... 47
7.4 Digital outputs ................................................................................................ 48
7.4.1 Output alarm type No-SI - X3-05, pin 2 ........................................................ 48
7.4.2 Fan motor contactor type SI - X3-05, pin 1 .................................................. 48
7.4.3 Fan continuous purging X3-05, pin 3 ............................................................ 48
7.4.4 Output ignition (Z) type SI (IGNITION) X4-02 ............................................... 49
7.4.5 Outputs fuel valves type SI (V1...V3 / PV) X8-02, X7-01, X7-02 ................... 50
7.4.6 Output safety valve (SV) type SI X6-03 ........................................................ 50
7.4.7 Output for indication of operation X8-04, pin 2 .............................................. 50
7.5 Program sequence ......................................................................................... 51
7.5.1 Time parameters ............................................................................................ 51
7.5.2 Valve proving ................................................................................................. 52
7.5.2.1. Valve proving with separate pressure switch (P LT) X9-04 ........................... 53
7.5.2.2. Valve proving via gas pressure switch-min X5-01 ......................................... 54
7.5.2.3. Lockout phase (phase 00) ............................................................................. 54
7.5.2.4. Safety phase (phase 01) ................................................................................ 55
7.5.3 Special functions during the program sequence ............................................ 56
7.5.3.1. Reset / manual lockout .................................................................................. 56
7.5.3.2. Alarm upon start prevention ........................................................................... 57
7.5.3.3. Possible start preventions .............................................................................. 58
7.5.3.4. Repetition counter .......................................................................................... 58
7.5.3.5. Start without prepurging (as per EN 676) ...................................................... 61
7.5.3.6. Gas shortage program ................................................................................... 61
7.5.3.7. Program stop function .................................................................................... 62
7.5.3.8. Forced intermittent operation (<24 hours) ..................................................... 62
7.5.3.9. Low-fire shutdown .......................................................................................... 62
7.5.3.10. Continuous fan ............................................................................................... 63
7.5.3.11. Test function for approval of burner - loss-of-flame test (TÜV test) .............. 64
7.5.3.12. Purging in the lockout position ....................................................................... 65
7.5.3.13. Switching back to pilot ................................................................................... 66
7.6 Fuel trains (application examples) ................................................................. 69
7.7 Sequence diagrams ....................................................................................... 78
7.7.1 Gas direct ignition «G», «G mod», «G mod pneu» ........................................ 79
7.7.2 Gas pilot ignition 1 «Gp1», «Gp1 mod», «Gp1 mod pneu» ........................... 80
7.7.3 Gas pilot ignition 2 «Gp2», «Gp2 mod», «Gp2 mod pneu» ........................... 81
7.7.4 Light oil direct ignition «Lo», «Lo mod», «Lo 2-stage», «Lo 3-stage» ........... 82
Basic Documentation LMV37.4...
Contents
CC1P7546en
20.09.2013