Honeywell BCU 460 User Manual

6 Edition 11.19
Technical Information · GB
• For burners in intermittent operation or in continuous operation
• Flame control by UV, ionization or a further option of using the
furnace chamber temperature
• Simple system integration using the PC programming and
diagnostic software BCSoft
• With optional valve proving system
• With optional operating modes to reduce thermal NOx
• Fieldbus connection (PROFIBUS, PROFINET, EtherNet/IP) using
optional bus module
Burner control units BCU 460, BCU 465

Honeywell BCU 460 Specifications

General

Supply Frequency	50/60 Hz
Ambient Temperature	-4 to +140°F (-20 to +60°C)
Protection Class	IP20
Input Voltage	24 V AC/DC
Operating Temperature	-4 to +140°F (-20 to +60°C)
Enclosure Rating	IP20

Summary

3 Function

3.2 Connection diagram

Provides detailed electrical connection diagrams for various BCU models and configurations.

3.2.8 Assignment of connection terminals

Maps each terminal number to its specific designation and function within the BCU.

4 Air control

5 Low NOx mode (flameless operation)

6 Valve proving system

6.1 Tightness control

Describes the tightness control function to detect leaks in gas solenoid valves.

6.2 Proof of closure function

Explains the function that monitors the closed position of gas solenoid valves.

7 BCSoft

8 Fieldbus communication

8.1 BCU and bus module BCM

10 Fault signalling

11 Parameters

11.1 Application parameters

11.4 Flame control

Details parameters for flame signal detection sensitivity and flame simulation checks.

11.5 Behaviour during start-up

11.7 Safety limits

Defines safety parameters like low air pressure protection and safety time during operation.

11.8 Air control

Details parameters for pre-purge, pre-ventilation, over-run, and air actuator control.

11.12 Sensors

11.13 Communication

Covers parameters for fieldbus communication and K-SafetyLink.

11.14 Interface parameters

14 Project planning information

14.1 Installation

14.2 Commissioning

Outlines the necessary checks and conditions before starting the BCU.

14.3 Electrical connection

Details the electrical connection requirements, wiring, and safety precautions.

14.5 Parameter chip card

15 Accessories

15.3 BCSoft

Information on obtaining and using the BCSoft engineering tool for configuration and diagnostics.

15.8 Bus module BCM 400

16 BCM 400

16.1 Application

16.3 Electrical connection

16.4 Commissioning

19 Safety-specific characteristic values for SIL and PL

Mean probability of dangerous failure PFHD of individual safety functions

Lists PFHD values for various safety functions of the BCU.

Relationship between the Performance Level (PL) and the Safety Integrity Level (SIL)

Table correlating Performance Level (PL) with Safety Integrity Level (SIL).

20 Safety information in accordance with EN 61508-2

20.1 General

20.3 Communication

21 Maintenance