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Troubleshooting 

 

Problem 

Possible cause 

Solution 

Rotary actuator 
does not move 

Supply pressure is not applied 
correctly. 

Correctly set the regulator at the supply 
pressure side. 

The directional switching

 

valve (such as a solenoid

 

valve) does not switch. 

Correctly apply a signal to the directional 
switching valve (such as a solenoid valve). 

Air leakage from piping. 

Inspect the piping and stop the leakage. 

The restrictor in the port is 

clogged. 

Clean the restrictor. 
Take the following countermeasures: 
(1) Blow air through the piping again. 
(2) Inspect the air filter. 

Operation is not 
smooth. 
(stick-slip) 

The load has some friction. 

Reduce the friction resistance. 

Actuator axis and mating axis 
not aligned. 

Align the two centers or use a flexible fitting.   

Insufficient output due to a low 
supply pressure. 

To obtain stable operation, adjust the supply 
pressure to make the load ratio appropriate. 

Speed controller is restricted 
too much. 

Adjust the speed controller so that the rotating 
marks will be in the adjusting range. 

Extreme rotating 
angle changes. 

Internal parts are broken. 

Replace the rotary actuator with the new one. 
After that, take the measures below. 
(1)Calculate the kinetic energy applied to the 

rotary actuator and adjust the load and 
rotation speed to make the value within the 
allowable kinetic energy.   

(2)Mount an external stopper or shock 

absorber to absorb the impact force

In this case, provide a buffer angle to the 
stroke of the actuator( Use 100

°

actuator in 

the case of 90

°

stroke.) and touch it to an 

external stopper or the shock absorber surely. 

 

 

 

 

 

- 35 - 

2020-10-13 10:43

DI987004

Содержание CRJ Series

Страница 1: ...DOC No CRJB OM00002 A PRODUCT NAME Mini Rotary Actuator MODEL Series Product Number CRJ 05 1...

Страница 2: ...g of rotation time Moment of inertia Calculation formulae for moment of inertia Kinetic energy Calculation of required torque Load type Auto switch type for rotary actuator Auto switch specification P...

Страница 3: ...failure when configuring the equipment 2 Only personnel with appropriate training should operate machinery and equipment The product specified here may become unsafe if handled incorrectly The assemb...

Страница 4: ...uct or necessary parts will be provided This limited warranty applies only to our product independently and not to any other damage incurred due to the failure of the product 3 Prior to using SMC prod...

Страница 5: ...the circuit air pressure caused by a power failure When a rotary actuator is used as clamping mechanism there is a danger of workpiece dropping if there is a decrease in clamping force due to a drop i...

Страница 6: ...bricant to the exterior The lubricant coating the interior of the product may leak to the outside of the product from connecting parts of the rotary body cover etc 17 Do not disassemble the product or...

Страница 7: ...result in insufficient strength and cause damage to the product This can lead to possible human injury and damage to the surrounding equipment 8 Do not enlarge the fixed throttle by modifying the pip...

Страница 8: ...gle adjustment is available for this product When using an external stopper set in a position so that that the adjusting bolt does not collide into the piston Precautions when Converting Rotational Mo...

Страница 9: ...products 5 A product with an angle adjustment screw is temporarily secured at an arbitrary position within the adjustable rotating range Before using product readjust it to a desired angle and tighte...

Страница 10: ...c oils including organic solvents salt or corrosive gases etc as it can cause damage or malfunction 1 When extremely dry air is used as the fluid degradation of the lubrication properties inside the e...

Страница 11: ...y occur 2 Maintenance work If handled improperly compressed air can be dangerous Assembly handling repair and element replacement of pneumatic systems should be performed by a knowledgeable and experi...

Страница 12: ...or each cylinder series use the indicated value The auto switches may malfunction due to interference from the magnetic fields Use of a magnetic screen plate MU S025 or commercially available magnetic...

Страница 13: ...tionally note that the 12 VDC relay does not apply to the auto switch 11 Pay attention to leakage current 2 wire type Current leakage current flows to the load to operate the internal circuit even whe...

Страница 14: ...log indicates the optimum position at stroke end If mounted at the end of the operating range around the borderline of ON and OFF operation will be unstable depending of the operating environment Also...

Страница 15: ...t circuit of loads Solid state PNP output type auto switches do not have built in short circuit protection circuits Carefully handle as the auto switch may be damage Take special care to avoid reverse...

Страница 16: ...4 Do not use in an environment with temperature cycles If temperature cycles other than normal temperature changes are applied this may adversely affect the insides of the auto switches 5 Do not use i...

Страница 17: ...or the mounting position is dislocated retighten them after readjusting the mounting position 2 Confirm that there is no damage to lead wires To prevent faulty insulation replace auto switches or repa...

Страница 18: ...ent and fluid temperature 0 60 No freezing Rotation angle 10 0 8 0 10 0 8 0 190 180 100 90 90 180 10 0 8 0 10 0 8 0 190 180 100 90 90 180 Angle adjustment range Each rotation end 5 Each rotation end 5...

Страница 19: ...1 180 67 CRJB 1 190 With external stopper 05 CRJU05 90 47 CRJU05 180 53 1 CRJU1 90 70 CRJU1 180 81 Mass of auto switch is not included Effective torque Table 4 Effective torque table N m Size Operatin...

Страница 20: ...12 Hexagon socket head set screw 2 11 Wear ring 2 10 Magnet 2 9 Piston seal 2 8 O ring 2 7 Round head no 0 Philips screw 3 6 Bearing 2 5 Cover 2 4 Bearing retainer 1 3 Shaft 1 2 Piston 1 1 Body 1 No D...

Страница 21: ...nut 2 12 Round head no 0 Philips screw 3 11 Hexagon socket head cap screw 4 10 Bearing 2 9 Hexagon socket head set screw 2 8 Stopper retainer 1 7 Holder 1 6 Stopper 1 5 Cover 2 4 Bearing retainer 1 3...

Страница 22: ...t structure The basic circuit for operating the rotary actuator using an air filter regulator solenoid valve and speed controller is shown in Fig 1 below 21 Fig 1 Basic circuit Air filter Regulator Sp...

Страница 23: ...e a proper operating condition Operation of shaft couplings As in Fig 3 alignment of the rotary actuator and the mating axis is necessary when the rotary actuator Is used with its axis lengthened If m...

Страница 24: ...rized For actuators with external stopper the rotation end can be set within the range shown in the drawing by adjusting the stopper bolt Note The drawings show the rotation range for the shaft s sing...

Страница 25: ...rt position and size 24 Size Bolt Tap depth 05 M4X0 7 5 1 M5X0 8 6 Shaft direction mounting Side mounting Top mounting Bottom mounting Table 6 Mounting dimension in shaft direction Table 7 Mounting di...

Страница 26: ...table which causes malfunction or shortens product life b When screwing piping or fittings into ports ensure that chips from the pipe threads or sealing material do not enter the piping Also if pipe t...

Страница 27: ...the stroke end the actuator will receive a big impact kinetic energy due to the inertial force Please refer below for calculation of kinetic energy 2 2 1 I E E Kinetic energy J I Moment of inertia 2...

Страница 28: ...rotational axis Perpendicular to the plate through the center of gravity 8 When the rotational axis and load center of gravity are not consistent 4 Round plate Including column Position of rotational...

Страница 29: ...Allowable kinetic energy J Rotation range rad I Moment of inertia kg m2 During uniform acceleration the angular acceleration after t seconds can be found as follows t 1 C t tdt 2 2 1 2 When 0 t rotat...

Страница 30: ...Calculation of required torque Load type The calculation method required torque varies depending on the load type 29...

Страница 31: ...ess at DC24V Relay PLC IC circuit D M9P D M9PV D M9PW D M9PWV PNP type D M9B D M9BV D M9BW D M9BWV DC24V DC10 to 28V 2 5 to 40mA 4V or less 0 8mA or less DC24V Relay PLC Auto switch Model no Output Po...

Страница 32: ...1 90 22 4 41 10 18 4 15 10 180 25 6 21 6 Operating angle m Value of the operating range Lm of a single auto switch converted to an axial rotating angle Hysteresis angle Value of auto switch hysteresi...

Страница 33: ...the magnetic body away at least 2mm or more from the bottom of the actuator If the magnetic body comes closer than 2mm malfunction of the auto switch may occur due to the magnetic force drop When usi...

Страница 34: ...leakage 5 Check stopper bolt fixed with nut for looseness 6 Switch ON OFF operation If any items are found during the inspection that require repairing or tightening either tighten the loose component...

Страница 35: ...head cap screws evenly so that the stopper retainer is not unevenly tightened as in Fig 11 Furthermore take precautions to avoid applying excessive force to the shaft when tightening Tighten the hold...

Страница 36: ...axis not aligned Align the two centers or use a flexible fitting Insufficient output due to a low supply pressure To obtain stable operation adjust the supply pressure to make the load ratio appropria...

Страница 37: ...stroke and touch it to an external stopper or the shock absorber surely Insufficient rotating Angle There is no margin on rotation angle of actuator hence rotation range of actuator is unsymmetrical w...

Страница 38: ...tokanda Chiyoda ku Tokyo 101 0021 JAPAN Tel 81 3 5207 8249 Fax 81 3 5298 5362 URL https www smcworld com Note Specifications are subject to change without prior notice and any obligation on the part o...

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