Burner Control Unit BCU 570
- For monitoring and controlling modulating individual burners and forced draught burners of unlimited capacity
- For directly ignited burners or burners ignited by a pilot burner in intermittent or continuous operation (in conjunction with UV sensor UVS, only intermittent operation available)
- Allows control of actuators and frequency converters
- Performs safety functions in accordance with EN 746-2 and EN 676
- With optional valve proving system
- Flexible range of applications due to parameterization possibilities
- Specifically designed for DIN rail installation inside a control cabinet
- Safety functions up to SIL 3 (DIN EN 62061) corresponding to PL e (ISO EN 13849)
- FM and CSA approved, UL listed
Burner control unit BCU 570 controls, ignites and monitors industrial individual burners and forced draught burners of unlimited capacity in intermittent or continuous operation. It can be used for directly ignited burners or burners ignited by a pilot burner.
The BCU 570 has an interface for control elements for burner capacity control. Both actuators (IC 20, IC 40, 3-point step and RBW) and frequency converters can be controlled. A valve proving system can be integrated as an option.
The BCU 570 activates the fan and moves a connected actuator or frequency converter to pre-purge and ignition position. If the centrally checked safety requirements, e.g. pre-purge, flow detector and pressure switch scan, have been met, the BCU 570 starts the burner. An enable signal is then issued for an external temperature controller which controls the actuator or frequency converter in accordance with the capacity demand. The burner control unit BCU 570 monitors the gas and air pressure. The optionally integrated valve proving system checks the valves by scanning an external gas pressure switch or by checking whether the gas valve on the inlet side is closed.
Using the BCSoft program, the parameters, analysis and diagnostic information can be read from the BCU via the optionally available opto-adapter. All valid parameters are saved on the integrated parameter chip card. The parameter chip card can be easily removed, for example when the unit is replaced, and inserted into a new BCU to transfer parameters.
An integrated Manual mode allows the manual activation of the burner control units and adjustment of the butterfly valves.
The fan output and the actuator and valve outputs which are checked for faults are accommodated in a plug-in power module. If necessary, this module can be replaced with little effort.
The BCU can be installed on a DIN rail in the control cabinet. The plug-in connection terminal strips make it easier to install and remove.
The external operator-control unit OCU is available as an option for the BCU. The OCU can be installed in the control cabinet door instead of standard control units. The program status or fault messages can be read on the OCU. For burner adjustment, the operating points can be approached conveniently in Manual mode using the operator-control unit.
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Mains voltage: 120 V AC, 50/60 Hz; No valve-proving system; Capacity control Modulating with IC interface; connection plug with screw terminals.
Mains voltage: 120 V AC, 50/60 Hz; No valve-proving system; Capacity control Modulating with RBW interface; connection plug with screw terminals.
For all other configurations Contact Combustion 911
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