Honeywell Krom Schroder BCU 580 - 12.7 Calculating the safety time tSA

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BCU 580 · Edition 11.15l 110

Project planning information

12.7 Calculating the safety time t

SA

Table of Contents

Burner Control Units BCU 5801
Contents2
- Table of Contents2
1 Application5
- Examples of Application9
2 Certification18
3 Function19
- Connection Diagram19
- BCU 580 Program Sequence23
4 Air Control25
- Capacity Control26
  - BCU..F1/F2, the Control Element Is Activated by the26
  - Bcu28
5 Valve Proving System29
- Tightness Test29
- Proof of Closure Function36
  - Program Sequence36
6 Bcsoft37
7 Profinet38
- BCU and Bus Module BCM39
- GSD File for PLC Configuration41
  - Modules for Cyclic Data Exchange42
  - Indexes for Acyclic Communication48
8 Program Step/Status49
9 Fault Signalling51
10 Parameters54
- Scanning the Parameters58
- Flame Control58
- Behaviour During Start-Up63
- Sa168
  - Flame Proving Period 1 T FS168
  - Safety Time 2 T69
- Sa269
- Minimum Operating Time T73
11 Selection103
- Type Code103
12 Project Planning Information104
- Installation104
- Commissioning104
- Electrical Connection105
- Actuators108
  - IC 20108
- Parameter Chip Card109
- Protecting the Pilot Burner from Overload109
- Calculating the Safety Time T110
- Fifth or Switchable Gas Valve on BCU111
13 Accessories112
- Bcsoft112
  - Opto-Adapter PCO 200112
  - Bluetooth Adapter PCO 300112
- Ocu112
- Connection Plug Set113
- Stickers for Labelling113
- Changed Parameters" Stickers113
14 Ocu114
- Application114
- Function115
  - Manual Mode116
- Electrical Connection117
- Installation117
- Selection118
- Technical Data for OCU118
15 Bcm 500119
- Application119
- Function119
- Electrical Connection119
- Installation120
- Selection120
- Technical Data120
16 Technical Data121
- Electrical Data121
- Mechanical Data122
- Environment122
- Dimensions122
- Safety-Specific Characteristic Values123
- Converting Units124
17 Maintenance125
18 Legend126
19 Glossary127
- Waiting Time T W127
- Ignition Time T Z127
- Safety Interlocks127
- Safety Time on Start-Up T SA1127
- Safety Time During Operation T127
- Safety Shut-Down128
- Fault Lock-Out128
- Warning Signal128
- Timeout128
- Lifting129
- Air Valve129
- Diagnostic Coverage DC129
- Operating Mode129
- Safe Failure Fraction SFF130
- Probability of Dangerous Failure PFHD130
- Mean Time to Dangerous Failure MTTF D130
Feedback131
Contact131

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