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Burner Control Unit BCU 460

Burner Control Unit BCU 460The BCU (burner control unit) 460 is for directly ignited burners of unlimited capacity (air valve control optional). The unit ignites and monitors gas burners for intermittent or continuous operation. As a result of its fully electronic design, it reacts quickly to various process requirements and is therefore suitable for frequent cycling operation.

It can be used for directly ignited industrial burners of unlimited capacity. The burners may be modulating or step-by-step controlled. The BCU is installed near the burner to be monitored.

On industrial furnaces, the BCU relieves the load on the furnace control by taking over tasks that only relate to the burner, for example it ensures that the burner always ignites in a safe condition after it has been restarted.

The optional air valve control on the BCU..L assists the furnace control for cooling, purging, and capacity control tasks.

The program status, the unit parameters, and the level of the flame signal can be read directly from the unit. The burner can be controlled manually for commissioning and diagnostic purposes.

If the local requirements on the burner control unit change, the BCSoft software can be adjusted to the unit parameters of the application by using the optical interface. Users can see input and output signals and the error history.

Features

Documentation for Burner Control Unit BCU 460

Documentation

Kromschroder Product Labels and Type Codes FAQ: Kromschröder Product Labels and Type Codes (Blog Post)
View the Kromschroder BCU 460 Burner Control Brochure Burner Control BCU 460 Brochure
View the Kromschroder BCU 460 Burner Control Installation Instructions Installation Instructions for Burner Control BCU 460
View Kromschroder BCU 460 Burner Control Technical Information Burner Control BCU 460 Technical Sheet
Upgrade your Fireye or Honeywell Burner Control to a Kromschroder Burner Control Learn how to upgrade your Fireye or Honeywell Burner Control to a Kromschroder Burner Control
 
Ordering information for Burner Control Unit BCU 460

Ordering Information

Model 1st trial for Ignition Period Air Valve Control PROFIBUS Connection Additional Signal Distribution Price
(US List)
Order Now
BCU 460T-5/2R3 5 sec. No No No $1160
BCU 460T-5/2LR3 5 sec. Yes No No $1280
BCU 460T-10/2LR3 10 sec. Yes No No $1280
For all other configurations Contact Combustion 911

Accessories

Model Description Price
(US List)
Order Now
BC SOFT Optical Adapter for BC Soft with USB interface, includes CD-ROM $331
Ignition Cable Silicon Cable High Voltage 7mm (priced per foot) $3
 
Applications for Burner Control Unit BCU 460

Applications

Click on images for close-up view.
Application for BCU 460 Burner Control Unit Modulating-controlled burner
Control: ON/OFF/Continuous

The external control system moves the butterfly valve for air to ignition position. The burner starts at low-fire rate, and a regulator controls the burner capacity via the butterfly valve for air after the operating state has been signalled.
Application for BCU 460 Burner Control Unit Two-stage-controlled burner ("L" products)
Control: ON/OFF or ON/HIGH/LOW/OFF

The BCU supports the cooling and purging processes. The burner starts at low-fire rate. When the operating status is reached the BCU advises the control unit. The PLC can now pulse the air valve in order to control the burner capacity.
Application for BCU 460 Burner Control Unit Single-stage-controlled radiant tube burner ("L" products)
Control: ON/OFF

The BCU supports the cooling and purging processes.
 
Specifications for Burner Control Unit BCU 460

Specifications

Electrical
Mains voltage: 115 V AC, -15/+10 %, 50/60 Hz
Inherent consumption: approx. 9 VA plus inherent consumption of the ignition transformer.
Voltage to inputs and valves: mains voltage
Signal and control line: max. 2.5 mm2
Cable for burner earth/PE wire: 4 mm2
Input voltage signal inputs: Signal "1": 80 - 126,5
Signal "2": 0 - 20
Input current signal inputs: Signal "1" typ. 2 mA
Output current: Max. 2 A per output, but total current for valves and ignition transformer: max. 2.5 A.
Fail-safe inputs and outputs: All the inputs and outputs marked "FS" may be used for safety tasks.
Flame control: Sensor voltage: approx. 230 VAC
Sensor current: > 1 µA
Length of sensor cable: max. 5 m
Fuse in unit: F1: 3.15 A, slow-acting, H pursuant to IEC 127-2/5
F3: 3.15 A, slow-acting, H pursuant to IEC 127-2/5 (on BCU..C).
   
Ignition Transformer
Type: TZI 7.5-12/100R
Input: VAC: 115
Hz: 50 (60)
A: 1.2 (0.9)
Output: V: 7500
mA: 12 (9)
   
Operation and fault signaling contacts
Signalling contact (not floating): max. 2 A, 264 V, not internally fused
Max. number of operating cycles: 1,000,000
Mains switch: 1000
Reset/Information button: 1000
   
Operation and Environment
Length of Burner cables: max. 5 m. (16.4 ft.)
Ambient temperature: -20°C (-4°F) to +60°C (+140°F) (no condensation permitted)
   
Construction Materials
Enclosure: IP 54 pursuant to IEC 529
Housing: Die-cast aluminium with plug-in terminal blocks and plug-in M20 cable glands.
Weight: Approx. 5 kg (11 lbs.) depending on version.
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