Electro-Pneumatic Positioner
YT-1000 / 1050 series
Product Manual
Ver. 1.30
51
5)
(Only Fork lever type) After determining fork lever direction, adjust F between the top plate of fork
lever and the top face of actuator as below table. Fasten lock nuts which are located on the bottom
of the fork lever.
Fig. 4-16: Height of fork lever
6)
Attach the positioner to the bracket. <
Only fork lever type : Fix the clamping pin (5 mm Dia.) into
the fork lever slot and insert center pin (2 mm Dia.) of the main shaft of the positioner into the hole
of center of the fork lever. The clamping pin will be locked to the fork lever spring.>
Setting
alignment of center of main shaft of the positioner and center of the actuator’s stem is very
important. Poor alignment of the main shaft and the actuator’s stem decreases the positioner’s
durability due to unnecessary forces on the main shaft.
Fig. 4-17: Main shaft center alignment (Fork lever) Fig. 4-18: Main shaft center alignment (Namur)
7)
Tighten the positioner and the bracket with bolts
after checking the positioner’s position.
H
F
(only No. 1 & 3 fork lever)
20
About 44
30
About 54
50
About 74
