Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) , and other safety regulations.
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Safety Instructions Caution 1.The product is provided for use in manufacturing industries. The product herein described is basically provided for peaceful use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary. If anything is unclear, contact your nearest sales branch.
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9. Use of the VEX3 series solenoid type product When using the VEX3 series solenoid type for the first time, actuators may travel in an unexpected direction depending on the switching position of the valve. Implement measures to prevent any danger from occurring when operating the actuator.
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VEX3 Series 3 position valve with 3 ports / Precautions (2) Be sure to read before handling. 2) If a surge protection circuit contains nonstandard diodes, such Design/Selection as Zener diodes or varistor, a residual voltage that is in Caution proportion to the protective circuit and the rated voltage will remain.
VEX3 Series 3 position valve with 3 ports / Precautions (3) Be sure to read before handling. Design/Selection Piping Caution Caution 5. Operation in a low temperature condition 1. Preparation before piping Take appropriate measures to avoid freezing of drainage, Before piping is connected, it should be thoroughly blown out with moisture etc.
VEX3 Series 3 position valve with 3 ports / Precautions (4) Be sure to read before handling. Wiring Air Supply Warning Warning The solenoid valve is an electrical product. For 1. Type of fluids Please consult with SMC when using the product in applications safety, install an appropriate fuse and circuit breaker other than compressed air.
VEX3 Series 3 position valve with 3 ports / Precautions (5) Be sure to read before handling. Operating Environment 3. Low frequency operation Valves should be operated at least once every 30 days to Warning prevent malfunction. (Use caution regarding the air supply.) 4.
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VEX3 Series Specific Product Precautions (1) Be sure to read before handling. Connectors for Series VEX3 Body Sizes 12, 22, 32, 42 How to Use Plug Connector Plug Connector Lead Wire Length Standard length is 300 mm, but the following lengths are also Caution available.
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VEX3 Series Specific Product Precautions (2) Be sure to read before handling. Connectors for Series VEX3 Body Sizes 12, 22, 32, 42 Surge Voltage Suppressor How to Use DIN Terminal Caution Caution ● Connection For DC 1. Loosen the holding screw (1) and pull the connector out of the Polarity (positive and negative) does not matter.
VEX3 Series Specific Product Precautions (3) Be sure to read before handling. Connectors for Series VEX3 Body Sizes 50, 70, 90 How to Use DIN Terminal Electrical Connection(DIN Terminal) Caution Caution Disassembly DIN terminal is connected inside as in the figure below. Connect to 1) After loosening the screw (1), then if the housing (2) is pulled in the corresponding power supply.
Troubleshooting Failure phenomenon Possible causes Countermeasures (Refer to the next page) Operation failure The pilot valve does not switch. Incorrect voltage Incorrect wiring Fuse blown out and/or lead wire broken Incorrect contact at the contact and connection Broken wire in the coil Foreign matter caught in the armature Poppet valve does not switch Decrease in pilot pressure...
Countermeasures Countermeasures Connect wires correctly. Replace the parts. Replace the parts or connect wires correctly. Replace the valve. Adjust the pressure so that pilot pressure is within the specified range during operation. If incorrect oil has been used for lubrication, remove the oil with air blow and replace the valve with a new one.
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