ABB TZIDC Operating Instructions Manual

Also see for TZIDC: Operating instructions Commissioning instructions Commissioning Instruction Manual Quick start

TZIDC DIGITAL POSITIONER | OI/TZIDC-EN REV. B 19NoteAdjust the height of the positioner on the cast iron yoke orcolumnar yoke until the lever is horizontal (based on a visualcheck) at half stroke of the valve.M10420-01211 Increase linkage 2 Decrease linkageFigure 12: Positioner linkageThe scale on the lever indicates the link points for the variousstroke ranges of the valve.Move the bolt with the follower pin in the oblong hole of thelever to adjust the stroke range of the valve to the working rangefor the position sensor.Moving the link point inwards increases the rotation angle of thesensor. Moving the link point outwards reduces the rotationangle of the sensor.Adjust the actuator stroke to make use of as large an angle ofrotation as possible (symmetrical around the center position) onthe position sensor.Recommended range for linear actuators:• Æ28 to 28°Minimum angle:• 25°NoteAfter mounting, check whether the positioner is operating withinthe measuring range.Position of actuator boltThe actuator bolt for moving the potentiometer lever can bemounted permanently on the lever itself or on the valve stem.Depending on the mounting method, when the valve moves theactuator bolt performs either a circular or a linear movementwith reference to the center of rotation of the potentiometerlever. Select the chosen bolt position in the HMI menu in order toensure optimum linearization. The default setting is actuatorbolt on lever.M110311 2 35 41 Potentiometer lever2 Actuator bolts3 Valve stem4 Valve yoke5 PositionerFigure 13: Actuator bolts on the lever (rear view)M110321 2 35 41 Potentiometer lever2 Actuator bolts3 Valve stem4 Valve yoke5 PositionerFigure 14: Actuator bolts on the valve (rear view)