SMC VO5746E Series 3 Port Solenoid Valve Modular Type and Residual Pressure Release Valve User Manual

VO5746E Series 3 Port Solenoid Valve Modular Type and Residual Pressure Release Valve
User Manual

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)1), and other safety regulations.
1) ISO 4414: Pneumatic fluid power — General rules relating to systems
ISO 4413: Hydraulic fluid power — General rules relating to systems
IEC 60204-1: Safety of machinery — Electrical equipment of machines (Part 1: General requirements)
ISO 10218-1: Manipulating industrial robots — Safety

Caution| Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
---|---
Warning|   Warning indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Danger| Danger indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.

Warning

1. The compatibility of the product is the responsibility of the person who designs the equipment or decides its specifications.
   Since the product specified here is used under various operating conditions, its compatibility with specific equipment must be decided by the person who designs the equipment or decides its specifications based on necessary analysis and test results.
   The expected performance and safety assurance of the equipment will be the responsibility of the person who has determined its compatibility with the product.
   This person should also continuously review all specifications of the product referring to its latest catalog information, with a view to giving due consideration to any possibility of equipment 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 assembly, operation and maintenance of machines or equipment including our products must be performed by an operator who is appropriately trained and experienced.

3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed.
   1. The inspection and maintenance of machinery/equipment should only be performed after measures to prevent falling or runaway of the driven objects have been confirmed.
   2. When the product is to be removed, confirm that the safety measures as mentioned above are implemented and the power from any appropriate source is cut, and read and understand the specific product precautions of all relevant products carefully.
   3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.

4. Contact SMC beforehand and take special consideration of safety measures if the product is to be used in any of the following conditions.
   1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to direct sunlight.
   2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping, vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or other applications unsuitable for the standard specifications described in the product catalog.
   3. An application which could have negative effects on people, property, or animals requiring special safety analysis.
   4. Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a mechanical protective function, and periodical checks to confirm proper operation.

Caution
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 specificatior a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements
The product used is subject to the following “Limited warranty and Disclaimer” and “Compliance Requirements”.
Read and accept them before using the product.

Limited warranty and Disclaimer

1. The warranty period of the product is 1 year in service or 1.5 years after the product is delivered.*2)
   Also, the product may have specified durability, running distance or replacement parts. Please consult your nearest sales branch.

2. For any failure or damage reported within the warranty period which is clearly our responsibility, a replacement product 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 products, please read and understand the warranty terms and disclaimers noted in the specified catalog for the particular products.

*2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum pad or failure due to the deterioration of rubber material are not covered by the limited warranty.

Compliance Requirements

1. The use of SMC products with production equipment for the manufacture of weapons of mass destruction (WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are govemed by the relevant security laws and regulation of the countries involved in the transaction. Prior to the shipment of a SMC product to another country, assure that all local rules goveming that export are known and followed.

Caution
SMC products are not intended for use as instruments for legal metrology.
Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests relevant to the metrology (measurement) laws of each country. Therefore, SMC products cannot be used for business or certification ordained by the metrology (measurement) laws of each country.

3/4/5-Port Solenoid Valves Precautions 1

Be sure to read this before handling products.

Design/Selection
Warning

1. Confirm the specifications.
   Products represented in this instruction manual are designed only for use in compressed air systems. Do not operate at pressures or temperatures, etc., beyond the range of specifications, as this can cause damage or malfunction.
   We do not guarantee against any damage if the product is used outside of the specification range.

2. Actuator drive
   When an actuator, such as a cylinder, is to be driven using a valve, take appropriate measures (such as the installation of a cover or the restricting of access to the product) to prevent potential danger caused by actuator operation.

3. Holding pressure
   Since valves are subject to air leakage, they cannot be used for applications such as holding pressure in a pressure vessel.

4. Not suitable for use as an emergency shutoff valve, etc.
   The valves listed in this catalog are not designed for safety applications such as an emergency shutoff valve. If the valves are used in such applications, additional safety measures should be adopted.

5. Release of residual pressure
   For maintenance and inspection purposes install a system for releasing residual pressure.

6. Ventilation
   Provide ventilation when using a valve in a confined area, such as in a closed control panel. For example, install a ventilation opening, etc., in order to prevent pressure from increasing inside of the confined area and to release the heat generated by the valve.

7. Do not disassemble the product or make any modifications, including additional machining.
   Doing so may cause human injury and/or an accident.

8. Resumption after a long period of holding time
   When resuming operation after a long period of holding time, there are cases in which, regardless of whether the product is in an ON or OFF state, there is a delay in the initial response time due to adhesion. Conducting several cycles of running-in operation will solve this problem. Please consider implementing this before resumption.

Caution

1. Leakage voltage
   Take note that the leakage voltage will increase when a resistor is used in parallel with a switching element or when a C-R circuit (surge voltage suppressor) is used for protecting a switching device because of the leakage voltage passing through the C-R circuit. The suppressor residual leakage voltage should be 3% or less of rated voltage.

2. Surge voltage suppressor

1. The surge voltage suppressor built into the valve is intended to protect the output contacts so that the surge generated inside valve does not adversely affect the output contacts. Therefore, if an overvoltage or overcurrent is received from an external peripheral device, the surge voltage protection element inside the valve is overloaded, causing the element to break. In the worst case, the breakage causes the electric circuit to enter short-circuit status. If energizing continues while in this state, a large current flows. This may cause secondary damage to the output circuit, external peripheral device, or valve, and may also cause a fire. So, take appropriate protective measures such as the installation of an overcurrent protection circuit in the power supply or a drive circuit to maintain a sufficient level of safety.
2. If a surge protection circuit contains nonstandard diodes, such as Zener diodes or varistor, a residual voltage that is in proportion to the protective circuit and the rated voltage will remain. Therefore, take into consideration the surge voltage protection of the controller.
   In the case of diodes, the residual voltage is approximately 1V.

3. Surge voltage intrusion
   With non-polar type valves, at times of sudden interruption of the loading power supply, such as emergency shutdown, surge voltage intrusion may be generated from loading equipment with a large capacity (power consumption), and a valve in a de-energized state may switch over (see Figure 1).
   When installing a breaker circuit for the loading power supply, consider using a solenoid valve with polarity (with polarity protection diode), or install a surge absorption diode between the loading equipment COM line and the output equipment COM line (see Figure 2). Figure 1. Surge Intrusion circuit example (NPN outlet example) Figure 2. Surge intrusion countermeasure example (NPN outlet example)

3/4/5-Port Solenoid Valves Precautions 2
Be sure to read this before handling products.

Design/Selection
Caution
4. Operation in low temperature conditions
It is possible to operate a valve in extreme temperatures, as low as –10°C. Take appropriate measures to avoid the freezing of drainage, moisture, etc., in low temperatures
5. Mounting orientation
The Mounting orientation is free.
6. Initial lubrication of main valve
The initial lubricant has already been applied to the main valve.
7. For the pilot EXH port (breathing hole)
If the valve pilot EXH port (breathing hole) is restricted extremely or blocked, abnormal operation of the valve may occur.

Mounting
Warning

1. Operation manual
   Install the products and operate them only after reading the operation manual carefully and understanding its contents. Also, keep the manual where it can be referred to as necessary.

2. Ensure sufficient space for maintenance activities.
   When installing the products, allow access for maintenance and inspection.

3. Tighten threads with the proper tightening torque.
   When installing the products, follow the listed torque specifications

4. If air leakage increases or equipment does not operate properly, stop operation.
   Check mounting conditions when air and power supplies are connected. Initial function and leakage tests should be performed after installation.

5. Painting and coating
   Warnings or specifications printed on or affixed to the product should not be erased, removed, or covered up.
   Please consult with SMC before applying paint to resinous parts, as this may have an adverse effect due to the solvent in the paint.

Piping
Caution

1. Refer to the Fittings and Tubing Precautions for handling One-touch fittings.
2. Refer to F.R.L/Common Precautions for screwing in piping materials.
3. For handling of silencers, refer to AN Series/Product Specific Precautions.
4. For handling of spacer with bracket, refer to AC-D Series/Product Specific Precautions.

Wiring
Warning

1. The valve is an electrical product. For safety, install an appropriate fuse and circuit breaker before use.

Caution

1. Polarity
   There is no polarity.

2. Applied voltage
   When electric power is connected to valve, be careful to apply the proper voltage. Improper voltage may cause malfunction or coil damage.

3. Check the connections.
   Check if the connections are correct after completing all wiring.

4. External force applied to the lead wire
   If an excessive force is applied to the lead wire, this may cause faulty wiring. Take appropriate measures so that a force of 30 N or more is not applied to the lead wire.
   When instructions are given in the Specific Product Precautions, follow these specifications.

Lubrication
Warning

1. Lubrication

1. Have been lubricated for life by the manufacturer and therefore do not require lubrication while in service.
2. If a lubricant is used in the system, use class 1 turbine oil (no additives), ISO VG32. For details about lubricant manufacturers’ brands, refer to the SMC website. Additionally, please contact SMC for details about class 2 turbine oil (with additives) ISO VG32. Once lubricant is utilized within the system, since the original lubricant applied within the product during manufacturing will be washed away, please continue to supply lubrication to the system.
   Without continued lubrication, malfunctions could occur.
   If turbine oil is used, refer to the Safety Data Sheet (SDS) of the oil.

2. Lubrication amount
   If the lubrication amount is excessive, the oil may accumulate inside the pilot valve, causing malfunction or response delay.

Air Supply
Warning

1. Type of fluids
   Please consult with SMC when using the product in applications other than compressed air.

2. When there is a large amount of drainage
   Compressed air containing a large amount of drainage can cause the malfunction of pneumatic equipment. An air dryer or water separator should be installed upstream from filters.

3. Drain flushing
   If condensation in the drain bowl is not emptied on a regular basis, the bowl will overflow. This may cause the malfunction of pneumatic equipment.
   If the drain bowl is difficult to check and remove, the installation of a drain bowl with an auto drain option is recommended.

For compressed air quality, refer to the SMC Best Pneumatics catalog.

3/4/5-Port Solenoid Valves Precautions 3
Be sure to read this before handling products.

Air Supply
Warning
4. Use clean air.
Do not use compressed air that contains chemicals, synthetic oils that include organic solvents, salt, corrosive gases, etc., as it can cause damage or malfunction.

Caution

1. When extremely dry air is used as the fluid, degradation of the lubrication properties inside the equipment may occur, resulting in reduced reliability (or reduced service life) of the equipment.Please consult with SMC.

2. Install an air filter.
   Install an air filter upstream near the valve. Select an air filter with a filtration size of 5 μm or smaller.

3. Take measures to ensure air quality, such as by installing an aftercooler, air dryer, or water separator.
   Compressed air that contains a large amount of drainage can cause the malfunction of pneumatic equipment, such as valves.
   Therefore, take appropriate measures to ensure air quality, such as by providing an aftercooler, air dryer, or water separator.

4. If an excessive amount of carbon powder is present, install a mist separator on the upstream side of the valve.
   If excessive carbon dust is generated by the compressor, it may adhere to the inside of a valve and cause it to malfunction.
   For compressed air quality, refer to the SMC Best Pneumatics catalog.

Operating Environment

Warning

1. Do not use in an atmosphere containing corrosive gases,chemicals, sea water, water, water steam, or where there is direct contact with any of these.

2. Products with IP65 enclosures (based on IEC60529) are protected against dust and water.
   However, these products cannot be used in water.

3. Products compliant with IP65 satisfy the product specifications when mounted properly.
   Be sure to read the precautions for each product.

4. Do not use in an environment where flammable gas or explosive gas exists. Usage may cause a fire or explosion. The products do not have an explosion proof construction.

5. Do not use in a place subject to heavy vibration and/or shock.

6. The valve should not be exposed to prolonged sunlight. Use a protective cover.

7. Remove any sources of excessive heat.

8. If it is used in an environment where there is possible contact with oil, weld spatter, etc., exercise preventive measures.

9. When the valve is mounted in a control panel, make sure the ambient temperature is within the specifications of the valve.

Caution

1. Temperature of ambient environment
   Use the valve within the range of the ambient temperature specification of each valve. In addition, pay attention when using the valve in environments where the temperature changes drastically.

2. Humidity of ambient environment
   • When using the valve in environments with low humidity, take measures to prevent static.
   • If the humidity rises, take measures to prevent the adhesion of water droplets on the valve.

Maintenance

Warning

1. Perform maintenance and inspection according to the procedures indicated in the operation manual.
   If handled improperly, human injury and/or malfunction or damage of machinery and equipment may occur.

2. Removal of equipment, and supply/exhaust of compressed air
   Before components are removed, first confirm that measures are in place to prevent workpieces from dropping, run-away equipment, etc. Then, cut off the supply air and electric power, and exhaust all air pressure from the system using the residual pressure release function. When the equipment is operated after remounting or replacement, first confirm that measures are in place to prevent the lurching of actuators, etc. Then, confirm that the equipment is operating normally.

3. Low-frequency operation
   Valves should be operated at least once every 30 days to prevent malfunction. (Use caution regarding the air supply.)

4. Manual override
   When a manual override is operated, connected equipment will be actuated.
   Operate only after safety is confirmed.

5. If the volume of air leakage increases or the valve does not operate normally, do not use the valve. Perform periodic maintenance on the valve to confirm the operating condition and check for any air leakage.

Caution

1. Drain flushing
   Remove drainage from the air filters regularly.

2. Lubrication
   Once lubrication has been started, it must be continued. Use class 1 turbine oil (with no additives), VG32. If other lubricant oil is used, it may cause a malfunction. Please contact SMC for information on the suggested class 2 turbine oil (with additives), VG32.

VP500, 700 Series / 3-Port Solenoid Valve Modular Type/Residual Pressure Release Valve

Specific Product Precautions 1

Be sure to read this before handling

Manual Override
Warning
Without an electric signal for the solenoid valve the manuaoverride is used for switching the main valve.
Connected actuator is started by manual operation.
Use the manual override after confirming that there is no danger.

• Non-locking push type Press the manual override button with a small screwdriver until it stops. Release the screwdriver and the manual override will return.
• Non-locking push type (Manual) Press the manual override button with your finger until it stops. Release your finger and the manual override will return.
• Push-turn locking type (Manual) After pushing down, turn in the direction of the arrow.
  If it is not turned, it can be operated the same way as the non-locking type.

Caution
When locking the manual override with the push-turn locking type, besure to push it down before turning.
Turning without first pushing it down can cause damage to themanual override and other trouble such as air leakage, etc.
Do not apply excessive torque when turning the locking type manuaoverride. (0.1 N·m)

How to Use DIN Terminal Connector
Caution

Connection

1. Loosen the holding screw and pull the connector out of the solenoid valve terminal block.
2. After removing the holding screw, insert a flat blade screwdriver, etc., into the notch on the bottom of the terminal block and pry it open, separating the terminal block and the housing.
3. Loosen the terminal screws (slotted screws) in the terminal block. Insert the lead core wires into the terminals according to the connection method, and secure the wires by re-tightening the terminal screws.
4. Secure the cord by fastening the gland nut.

• When making connections, please note that using a heavy-duty cord of a size outside of the range of supported sizes (ø3.5 to ø7) will not satisfy IP65 (enclosure) standards. Also, be sure to tighten the gland nut and holding screw within their specified torque ranges.
• After separating the terminal block and housing, the cord entry direction can be changed by rotating the housing in the desired direction (4 directions at 90° intervals).
• When equipped with a light, be careful not to damage the light with the cord’s lead wires.
  • Plug in and pull out the connector vertically without tilting it to one side.

Compatible cable
Cord O.D.: ø3.5 to ø7
(Reference) 0.5 mm2, 2-core or 3-core, equivalent to JIS C 3306

“Y” type
The Y type DIN connector is in compliance with the DIN standard of a 8 mm pitch between terminals.

• It is not interchangeable with the D type DIN connector with a 9.4 mm pitch between terminals.
• To distinguish it from the D type DIN connector, “N” is listed at the end of voltage symbol.
• The dimensions are the same as those of the D type DIN connector.

VP500, 700 Series / 3-Port Solenoid Valve Modular Type/ Residual Pressure Release Valve
Specific Product Precautions 2
Be sure to read this before handling

Light/Surge Voltage Suppressor

DIN Terminal
With light (DZ)
(YZ)

• The varistor surge voltage suppressor has residual voltage corresponding to the protective element and rated voltage; therefore, protect the controller side from the surge voltage.
  Valve EXH.[3(R)] port
  Caution
  Because of the residual pressure exhaust valve, if the valve EXH.[3(R)] port is blocked, air will not be exhausted from the secondary side.

Built-in check valve
Warning
A check valve is built into the pilot flow path to suppress the pilot pressure drop due to pressure fluctuation in the inlet side.
Be careful not to cause a dangerous situation due to air accumulated between the check valve and the pilot valve.
Soft start-up function
When the soft start-up function is selected, the initial pressure of the pneumatic system can be increased gradually.
Adjustment method
Turn the needle of the throttle valve to the left from fully closed (as shipped) to adjust the initial speed of the drive equipment on the outlet side.
Piping
Connection threads are not available for the residual pressure relief 3-port solenoid valve.
Piping adapter and spacer with bracket must be ordered separately.

• Piping Adapter
  | Symbol| Description| Body size [Applicable AC size]
  ---|---|---|---
  | 300 [AC30]| 400 [AC40]
  2 Pipe thread type| Nil| Rc| |
  N| NPT| |
  F| G| |
  +
  3 Port size| 2| 1/4| |
  3| 3/8| |
  4| 1/2| |
  6| 3/4| —|

• Spacer with Bracket
  Please refer to the AC-D series/product-specific precautions for handling.| Symbol| Description| Body size [Applicable AC size]
  ---|---|---|---
  300 [AC30]| 400 [AC40]
  2 Bracket| T| Spacer with bracket| |

Model| IA| B| C| D| E| EE| F| G| H| J K| Applicable size
---|---|---|---|---|---|---|---|---|---|---|---
Y300T-D| 4.2| 85| 43.| 68.| 35| —| 14| 7| 20| 6| 41| AC30-D
Y400T-D1| 5.2| 115| 50| 86.| 40| 55| 18| 9| 26| 7| _ 50| AC40-D

Trouble shooting

Problem| When the valve is failing, use this flow chart to clarify the cause of the failure and take countermeasures appropriate for the cause.| Possible cause| Countermeasures
---|---|---|---
Operation failure Air is not
switched.| | 1) Operation failure or sticking of the main valve.
• Foreign matter from the pip ngand air source got camp in the main valve of the valve, causing a malfunction.
• Matunction occurred duetostickingsr:has swelling of the rubber part of the main valve
2)Reduced pressure
Air source pressure is reduced and minimum operating pressure of the vahe was not reached. causing an operation failure.
3) Excessive oil supply
Due to excessive lubrication, oil accumulated inside the valve, causing malfunction.| – Replace the valve.
– Clean the air supply.
– If incorrect oil has been used for lubrication, remove the oil by air blow.
– If there is a large amount of condensate, install an auto drain or a dryer
– Adjust the pressure within the specification range for the valve.
– Reduce the amount of lubrication to the amount at which the oil does not splash from the exhaust port ( 3(R). vent port!.
1) Non-conforming of electric system
– Incorrect wiring
– Fuse blown out, lead wire broken
– Incorrect contact at the contact and connection
– Sequencer non-conforming
– Supply voltage insufficient
2) Drop of supply voltage
Operation failure of the valve due to voltage drop.
3) Nonconforming of the Installed pilot valve
– Broken wire in the coil or burnout
(High supply voltage, ircorrect coil specification, entry of water)| – Check all parts and replace the part, if necessary.
– Check the supply voltage.
– Check the supply voltage. Take corrective action if voltage drop is confirmed.
– Replace the valve.
1) Leakage current
Operation failure of the valve occurred due to residual voltage.
(Valve Is not turned OFF)| Check the residual voltage.
Keep the residual voltage at 3% or less of the rated voltage (DC coil).
2) Non-conformance of the Installed pilot valve
– Foreign matter is caught in the moving part of the valve (or pilot valve).
– Swelling of rubber parts inside the valve (or pilot valve)| – Clean the air supply._ ___
– Eliminate foreign matter with air blow.
– Replace the valve when actions above do not improve the condition.
Response failure
Valve and actuator become
slow.| The valve is slow.
Actuators including cylinder become slow.| 1) Leakage current
When the valve is turned off, k became slow due to the residual voltage.
2) Clogging of the filter and silencer
Filter or silencer is clogged, or vent pod is blocked.
3) Operation failure or sticking of the main valve.
Foreign matter from the piping and air source got caught in the main valve of the valve, causing a delay.
Malfunction occurred due to sticking such as swelling of the rubber part of the main valve.| Check the residual voltage.
Keep the residual voltage at 3% of the rated voltage (DC coil) or less.
– Replace the filter.
– Replace the silencer.
– Do not block the valve vent poll.
– Replace the valve.
– Check for abnormalities in devices other than valves.
– Clean the air supply.
– If incorrect oil has been used for lubrication. remove the oil by air blow.
– If there is a large amount of condensate. install an auto drain or a dryer.
Alr leakage| | 1)Internal air leakage increased because foreign matter get caught in the main valve.
2)Sealing failure of the actuator (cylinder)| – Replace the valve.
– Clean the air supply.
– Refer to the operation manual of the actuator for details.
,1) Foreign matter is caught in the pilot valve armature.
2) Foreign matter caught In the valve seat| – Replace the valve.
– Clean the air supply.
– Replace the valve.
– Clean the air supply.

If the countermeasures above are not effective, there may be a problem with the valve.
Stop using the valve immediately.
If any of the examples below are applicable, there may be an internal problem with the valve. Stop using the valve immediately.

1. The voltage used was not the rated voltage.
2. The oil supplied was not the specified type.
3. Lubrication was stopped during operation. Or, lubrication was interrupted temporarily.
4. The product was directly exposed to water with the valve cover, connector block or SI unit removed.
5. Severe impact was applied.
6. Foreign matter such as condensate or dust has entered the product
7. Other than those specified, if precautions on the operation manual apply.

• If the product has failed, then please return the valve without any modifications.

SMC Corporation
4-14-1, Sotokanda, Chiyoda-ku,
Tokyo 101-0021 JAPAN
Tel: + 81 3 5207 8249
Fax: +81 3 5298 5362
URL https://www.smcworld.com
© 2021 SMC Corporation All Rights Reserved
Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
No. VP500-OMZ0005

References

• SMC株式会社
• SMC株式会社

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