Honeywell Krom Schroeder BCU 480 - Page 3

BCU 480 · Edition 03.16l 3
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= To be continued
4.7.7 Air valve opens with operating signal ................ 52
4.7.8 Low fire over-run time t
KN
after a controlled shut-
down.......................................................53
4.7.9 Behaviour of the air valve in the event of a fault
lock-out....................................................54
4.8 Manual mode .....................................55
4.8.1 Manual mode limited to 5 minutes..................55
5 Selection ........................................ 56
5.1 Type code .........................................56
6 Project planning information .....................57
6.1 Cable selection ...................................57
6.1.1 Ionization cable.......................................57
6.1.2 Ignition cable .........................................57
6.1.3 UV cable ..............................................57
6.2 Ignition electrode .................................57
6.2.1 Electrode gap ........................................57
6.2.2 Star electrodes .......................................57
6.3 Calculating the safety time t
SA
...................58
6.4 Minimum burner on time .........................59
6.5 Safety interlocks (Limits) .........................59
6.6 Protection of safety-relevant outputs ............59
6.7 Emergency off ................................... 60
6.7.1 In the event of fire or electric shock .................60
6.7.2 Via the safety interlocks (limits) .....................60
6.8 Reset ............................................. 60
6.8.1 Parallel reset.........................................60
6.8.2 Permanent remote reset ............................60
6.8.3 Automatic remote reset (PLC) ......................60
6.9 Burner start ...................................... 60
6.10 Restart and start-up attempts ................. 60
6.11 Fault signalling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.12 Protecting the pilot burner from overload.......61
6.13 Installation ......................................61
6.14 Wiring............................................62
6.15 BCU and BCU..E1 (with and without adapted
power management)..................................62
6.16 Signal distributor board .........................62
6.17 PROFIBUS DP ...................................63
6.17.1 Safety-related control signals .....................63
6.17.2 Wiring the PROFIBUS plug connector .............63
6 . 17. 3 EMC ................................................63
6.17.4 Unit replacement...................................63
6.17.5 Status and fault messages for PROFIBUS DP .....64
6.18 Third gas valve (can be shut down) on BCU..L . 66
6.19 BCU switched off................................67
6.20 Furnace control .................................67
6.21 Mains switch ....................................67
6.22 Note on EC type-examination ..................67
6.23 SIL/PL level for thermoprocessing equipment 67
6.24 Changing parameters .......................... 68
7 Flame control .................................... 69
7.1 With ionization sensor.............................69
7.2 With UV sensor ....................................69
7.3 Via the temperature in high temperature
equipment ............................................70
8 Accessories.......................................71
8.1 High-voltage cable ...............................71
8.2 Industrial plug connector, 16-pin.................71
8.3 PROFIBUS plug connector .......................71
8.4 BCSoft ............................................72
8.4.1 Opto-adapter PCO 200 .............................72
8.4.2 Bluetooth adapter PCO 300 ........................ 72
8.5 “Changed parameters” stickers ..................72
8.6 External securing bar .............................73
8.7 Fastening set .....................................73
8.8 Radio interference suppressed electrode plugs..73
9 Technical data ....................................74
9.1 BCU..B1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
9.2 PROFIBUS DP ....................................75
9.3 Safety-specific characteristic values .............76