BCU 370 · Edition 01.19 3
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= To be continued
4.6 Air control .........................................56
4.6.1 Valve control .........................................56
4.6.2 Pre-purge............................................56
4.6.3 Quick start starts in....................................57
4.6.4 Pre-purge time t
PV
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.6.5 Post-purge time t
PN
.................................59
4.6.6 Fan run-up time t
GV
.................................60
4.7 Control using PROFIBUS DP .....................61
4.7.1 Bus control activation ................................61
4.7.2 Bus control limitation.................................61
4.8 Manual mode .....................................63
4.8.1 Operating time in Manual mode ....................63
4.9 Fault messages ...................................64
4.9.1 The last 10 fault messages..........................64
4.10 Password ........................................64
4.10.1 User-defined password . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5 Selection ........................................ 65
5.1 Type code .........................................65
6 Project planning information .................... 66
6.1 Cable selection .................................. 66
6.1.1 Ionization cable......................................66
6.1.2 UV cable .............................................66
6.1.3 Ignition cable ........................................66
6.2 Fan control........................................67
6.3 Controlling the butterfly valve ....................67
6.4 Safety interlock (limits) ...........................67
6.5 Too many remote resets ..........................67
6.6 Protecting the ignition unit from overload ...... 68
6.7 Wiring ............................................ 68
6.7.1 Single-electrode operation with external ignition
unit.........................................................68
6.8 BCU switched off ................................ 68
6.9 Note on EC type-examination or CSA and FM
approval...............................................69
6.10 Contact fuses ...................................69
6.11 Installation ......................................69
6.12 Protective circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
6.13 BCSoft...........................................69
7 Flame control ..................................... 70
7.1 ...with flame rod....................................70
7.2 ...with UV sensor ...................................70
8 Accessories.......................................71
8.1 High-voltage cable ...............................71
8.2 BCSoft ............................................71
8.2.1 Opto-adapter PCO 200 ..............................71
8.3 Radio interference suppressed terminal boots...71
8.4 Connection kit BCU 370 ..........................71
8.5 Set of stickers BCU 370...........................71
8.6 GSD master data file for BCU 370..B1 ............72
9 Technical data ....................................73
9.1 PROFIBUS DP ....................................74
9.2 Operating controls and dimensions ..............75
9.3 Converting units ..................................76
10 Legend ..........................................77
11 Glossary .........................................78
11.1 Safety shut-down................................78
11.2 Fault lock-out....................................78
11.3 Warning signal ...................................78
11.4 Timeout 25 s/250 s .............................78
12 Annex .......................................... 79
12.1 Status and fault messages for PROFIBUS DP ..79
Feedback ...........................................82
Contact.............................................82
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