This manual must be used in conjunction with the Ratiotronic 6000 manual at all times. 7.6.5. Setting the servo motors. Please refer to section 5 of the Ratiotronic manual. In general the drive servo motors are allocated as follows: Drive 1: Gas Butterfly valve Drive 2: Oil Metering Valve Drive 3: Air damper servo motor Drive 4: Inverter 7.6.6 This manual must be used in conjunction with the Ratiotronic 6000 manual at all times. 7.6.5 Setting the servo motors. Please refer to section 5 of the Ratiotronic manual. In general the drive servo motors are allocated as follows: Drive 1: Gas Butterfly valve Drive 2: Oil Metering Valve Drive 3: Air damper servo motor Drive 4: Inverter Ratiotronic 6000 在主壳体内可以有一块可选的子板，提供变频驱动器1或2（子板确定）的控制。 也可以选择子板使反馈信号直接取自测量相关电机、风机或泵轴转速的编码器。 Our customers can now select ETC burner controls where the contract specifies equipment must be suitable for inclusion in a SIL 3 loop. We believe that the ETC6000 Series is the only range of dedicated burner control equipment that meets the EN 61508 (2001) standard to this safety integrity level' Our ETC6000 Burner Management Control series offer a range of flexible combustion controls that contact features previously unavailable in this type of burner control as standard. These combustion controls interface to a wide range of third party systems using either hard-wired connections or a choice of communications protocols including RS The ETC6000 Burner Management System offers numerous features: Suitable for single and dual fuel burners All burner start up sequence functions and timings fully integrated Ignition control IR, UV, photocell and ionisation flame scanners supported Control of two variable speed drives for combustion air and fuel pump control DUNPHY COMBUSTION LTD. Queensway Rochdale England CE approval numbers for the TG4 Series burners are: TG410, 415, 420 - CE 86/CL/89 . *2 - Fitted with a Ratiotronic 6000 system COMBUSTION HEAD The Dunphy combustion head incorporates a two-stage