Krom Schroder BCU 560 - User Manual

6 Edition 02.16
Technical Information · GB
Burner control units BCU 560, BCU 565
• For monitoring and controlling modulating or staged burners for multiple
burner applications with a central air supply
• For directly ignited burners of unlimited capacity in intermittent or
continuous operation
• Optionally with valve proving system
• Optionally with menox
®
operating mode to reduce the formation of
thermal NO
x
• Flexible range of applications due to parameterization possibilities
• PROFINET fieldbus connection using optional bus module
• Assume safety functions pursuant to EN746-2
• EU certified
• Certified for systems up to SIL 3 and PL e

Summary

1 Application

1.1 Examples of application

Illustrates various burner configurations and applications.

2 Certification

3 Function

3.1 Connection diagram

Provides detailed wiring diagrams for various BCU models.

4 Air control

5 menox low NOx mode

6 Valve proving system

6.1 Tightness control

Details the procedure for checking gas valve and pipework tightness.

7 BCSoft

8 Profinet

8.2 GSD file for PLC configuration

Details the GSD file required for PLC integration and data exchange.

9 Program step;status

10 Fault signalling

11 Parameters

11.3 Behaviour during start-up

Describes the sequence and parameters for burner start-up.

11.5 Safety limits

Explains safety-related parameter settings for protection.

11.6 Air control

Covers parameters related to air flow and actuator control.

12 Selection

13 Project planning information

13.3 Electrical connection

Covers electrical wiring and connection requirements for the BCU.

14 Accessories

14.1 BCSoft

Details the BCSoft software and required adapters.

15 OCU

15.2 Function

Explains the functionality, keys, and modes of the OCU.

16 BCM 500

16.3 Electrical connection

Covers the electrical connection requirements for the BCM 500.

17 Technical data

17.5 Safety-specific characteristic values

Details safety integrity levels, diagnostic coverage, and failure probabilities.

18 Maintenance

19 Legend

20 Glossary

20.5 Safety shut-down

Explains the safety shut-down procedure and its causes.

20.6 Safety shut-down with subsequent fault lock-out (fault lock-out)

Details the fault lock-out procedure and reset requirements.

Krom Schroder BCU 560 Specifications

General

Type	Burner Control Unit
Model	BCU 560
Frequency	50/60 Hz
Input Voltage	24 V DC
Number of Digital Inputs	8
Number of Digital Outputs	6
Manufacturer	Krom Schroder
Approvals	CE
Operating Temperature	-20 to +60 °C
Storage Temperature	-20°C to +70°C
Relative Humidity	95% (non-condensing)
Communication Interface	Modbus RTU