Unox U-EPRSeries, User Manual

Page 1: ...Electro pneumatic Positioners U EPR Series USER S MANUAL Ver 1 02...

Page 2: ...5 Parts and Assembly 6 Dimensions 6 Installation 7 Safety Warning 7 Tools for Installation 7 U EPR Installation 7 Using Brackets to Install 8 Connection 11 Connection Piping 11 Power Connection Explo...

Page 3: ...pressure increased Flapper gets pushed by the force from torque motor As the gap between flapper and the nozzle increases air pressure exhausts from pilot valve and upper spool As a result spool rise...

Page 4: ...Feedback Lever 1 M6X40L 2 M6X63L 3 M8X40L 4 M8X63L 5 NAMUR Orifice 1 1 2 2 3 None Connection Type 1 PT 2 NPT Ambient Temperature S 20 70 H 20 120 L 40 70 Option 1 0 Standard 1 Dome Indicator Option 2...

Page 5: ...0 120 Explosion 20 60 T5 20 40 T6 Linearity 1 0 F S Hysteresis 1 0 F S Sensitivity 0 2 F S 0 5 F S Repeatability 0 5 F S AirConsumption 3LPM Sup 1 4kgf cm2 20psi FlowCapacity 80LPM Sup 1 4kgf cm2 20ps...

Page 6: ...Electro Pneumatic Positioners Parts and Assembly 6 Dimensions Explosion proof type U EPR...

Page 7: ...stem shut down Make sure there is no remaining pressure in the actuator Tools for installation Hexagonal wrench Screw drivers Spanners for hexagonal head bolts installation U EPR should be installed o...

Page 8: ...standard bracket This bracket contains three parts and brackets can be used for both fork type lever and NAMUR Shaft Figure 4 Assembly Method by stem height H 1 In general the height of an actuator H...

Page 9: ...sition of the actuator stem at zero point 0 For a single type of actuator it is easy to check zero point because the actuator stem is positioned at zero point when there is no supply pressure If doubl...

Page 10: ...main shaft s center of U EPR and insert connection bar into the fork lever slot so it can be locked to the fork lever spring This sets the alignment of the main shaft of U EPR and center of the actuat...

Page 11: ...the range of 1 4 7 kgf 140 700 kPA Set air filter regulator s supplied pressure 10 higher than actuator s spring range pressure Pipe Connection Make sure inside of pipe is emptied Do not use pipeline...

Page 12: ...ustment and piping connection Power Connection Explosion Proof Type Connection Connection Port 1 Connection port size is PF1 2 or G1 2 2 Make sure that the fastener bolts is tightly fastened 3 Make su...

Page 13: ...fasten the connection Close back the terminal box cover Figure 16 Figure 16 Safety Warning YT 1000R designed under intrinsicallysafe procedures and restriction However intrinsicallysafe system can be...

Page 14: ...hen single acting actuator with spring is used please check if the pressure level which is indicated on the positioner is same to the supplied pressure level Adjustment Span After setting zero supply...

Page 15: ...e actuator directly Always set back to A Automatic after setting change If OUT2 in single acting actuator or double acting actuator is used A M Switch will not operate Figure 20 Adjustment Seat Adjust...

Page 16: ...fice After inserting orifice place back the o ring Make sure there is no substance entering into port Figure 22 If hunting persists after inserting the orifice please contact YTC or its appropriate ag...

Page 17: ...Check if the positioner s nozzle has been blocked Also check if the pressure is supplied to the positioner and the pressure is being exhausted through the nozzle If the nozzle has been blocked by any...

Page 18: ...check if seat adjustment has been properly performed Please contact YTC for any further inquiries regarding the seat adjustment 2 Backlash can occur when the feedback lever and lever spring are loosen...