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Yoshitake CT-1, Product Manual, Page: 4 / 20

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Yoshitake CT-1 Product Manual Download Page 4

                                                                         

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EPDT-318a

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Type EP-1 4-20mA 
Electrical/pneumatic positioner 

Current signal input 

G 1/2 

Compressed air 

input 

Air regulator 

 
3. Appearance and dimensions 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

(mm) 

Size 

L 

HA 

HB 

A 

Stroke 

Weight(kg) 

15A 

184 

276 

100 

220 

20 

13 

20A 

184 

276 

100 

220 

20 

13 

25A 

184 

276 

106 

220 

20 

16 

32A 

222 

320 

111 

270 

25 

22 

40A 

222 

320 

111 

270 

25 

22 

50A 

254 

320 

124 

270 

25 

28 

65A 

276 

394 

135 

350 

30 

48 

80A 

298 

394 

167 

350 

40 

61 

100A 

352 

394 

187 

350 

40 

75 

 

*In case of including accessories, it is provided as following condition. 

 

[EP-1type electrical/pneumatic positioner] 

 
 
 
 
 
 
 
 
 
 
 

 
 
 

 

 

 

Summary of Contents for CT-1

Page 1: ...s a hazardous situation that if not avoided may result in minor or moderate injury or may result in only property damage Table of Contents 1 Specifications 1 2 Nominal size selection 2 3 Appearance an...

Page 2: ...Size 15 100A Application Control Steam Air Cold and hot water Oil Non dangerous fluid Driving force Compressed air Connection JIS 10KRF Temperature 5 210 Freeze is not available Valve Flow characteris...

Page 3: ...minal condition P2 Reduced press MPa A t Gas temperature P P1 P2 MPa G Specific gravity it is against air Cv Cv value depend on each size In case of liquid V Max liquid flow rate m3 h G Specific gravi...

Page 4: ...A Stroke Weight kg 15A 184 276 100 220 20 13 20A 184 276 100 220 20 13 25A 184 276 106 220 20 16 32A 222 320 111 270 25 22 40A 222 320 111 270 25 22 50A 254 320 124 270 25 28 65A 276 394 135 350 30 4...

Page 5: ...sitioner Current signal Input G1 2 Compressed air input Air regulator mm EP 1S type smart positioner mm Size WA WB 15A 295 230 20A 25A 32A 305 235 40A 50A 65A 320 240 80A 100A Size XA XB 15A 290 210 2...

Page 6: ...n of spring is compressed And the valve 5 is opened by displacing upward of the diaphragm rod 27 and connector 14 which is assembled with the diaphragm follower 30 and the fluid flows In addition the...

Page 7: ...prepare the sensor or measuring instrument by user themselves Example of pressure control Example of flow control Signal Valve action Open degree of valve Fluid 20mA Signal increase 4mA Full opened 10...

Page 8: ...of temperature control Signal Valve action Open degree of valve Tank 20mA Signal increase 4mA Full opened 100 Open Full closed 0 Water level Surge Water level Increase Water level No change Signal Val...

Page 9: ...remove seal and plastic cap which is used for pneumatic and electrical connection 8 Installation 8 1 Installation for body part Warning 1 Due to heavy product make sure to use hanging machine to hold...

Page 10: ...rrow marked on the product are in the same direction Install the valve perpendicularly to horizontal lines Please see the fig 5 Improper installation causes the malfunction 6 Do not apply excessive lo...

Page 11: ...ave the proper piping diameter so as not to have pressure drop when piping to the positioner The valve may not work properly 2 When using the seal tape for piping be aware not to enter it inside valve...

Page 12: ...and do wire the DC 4 20mA with the external signal line Terminal wiring method See Fig 8 Remove the set screw of the terminal box Use the hex wrench and remove the terminal box cover Please connect t...

Page 13: ...way is 2 wire type Please confirm and do wire the DC 4 20mA with the external signal line The positioner operates at 3 2 mA DC of minimum supply current Do not supply more than 24 mA DC Terminal wiri...

Page 14: ...ositioner receives a 4 20mA DC pseudo input signal 2 With the air pressure applied to the air regulator confirm the product operates with its opening from 0 to 100 when the pseudo input signal of 4 to...

Page 15: ...justment apply the input signal 12mA DC of 50 opening into the positioner In this state adjust the scale position of the stroke indicator plate attached to the actuator to half of the position of the...

Page 16: ...crew on the cover of positioner 4point and remove the cover Fig 11 Input 12mA DC to positioner Auto calibration cannot be conducted with any other input signal Press and hold hereafter ENTER key for a...

Page 17: ...e please check air connection 9 Warning and caution for use Warning 1 Before flow the steam in pipe line make sure steam can flow without any dangerous at the end of pipe line and pipe line is connect...

Page 18: ...spect or replace the positioner or regulator 6 Failure is occurred on body part or actuator 6 Inspect or replace the product 7 Sensitivity of the positioner is inadequate 7 Replace the positioner Work...

Page 19: ...peration 10 3 Daily inspection Please check the leakage from the pipe and the body portion leak sound etc following items during operation of facilities 10 4 Regular inspection 1 time Month 1 Please m...

Page 20: ...product Yoshitake supplies the repair parts for 5 years otherwise individually agreed 3 This warranty does not cover the damage due to any of below 1 Valve seat leakage or malfunction caused by forei...

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