ETC6000 Rotary Actuators
ETC offers a wide choice of dedicated rotary actuators ranging from 4-40Nm in size for use with the ETC6000 Burner Management System series. These rotary actuators accurately position air dampers and fuel valves to a resolution of 0.1º over a 90º stroke, allowing air fuel ratio profiles to be reliability repeated. Using a rotary actuator for each variable component of a burner control system, such as the secondary air damper, gas and oil metering valves, eliminates the need for complex mechanical linkages.
Hysteresis and backlash have traditionally been inherent weaknesses of mechanical linkages; joints work loose and become worn preventing repeatable positioning especially when travel is in opposite directions. These inaccuracies not only reduce combustion efficiency, resulting in more fuel usage and emissions, but also mean that the combustion engineer will have to set the combustion profile further from the stoichiometric point during commissioning to take these variables into account.
Should larger rotary actuators be required, there is the option of installing third party drives using an ETC CANbus servo interface.
Our EX actuators are available in both 20Nm and 40Nm actuation force respectively.
They are marked as ETC6023-Ex and ETC6024-Ex and are compatible with all OEM variants of ETC6000 series controllers.
Ex type marking – ll 3 G Ex nR llC T5 Gc
Evaluated and certified by ExVeritas
Should actuators be required for other zones there is the option of installing third party drives using an ETC CANbus servo interface.