ASMPT 03000630-01 SMC SY5120-5LOU-01 24VDC Solenoid Valve Assembly

The ASMPT 03000630-01 SMC SY5120-5LOU-01 solenoid valve assembly is designed for pneumatic directional control in compatible ASMPT and SIPLACE SMT machine configurations. It converts a 24VDC electrical command from the machine-control system into controlled compressed-air switching, allowing the connected pneumatic mechanism to extend, retract, release, clamp, position, or return according to the programmed production sequence.

The SY5120 configuration belongs to the SMC SY5000 family and uses a five-port, two-position, single-solenoid structure. The model code identifies a 24VDC standard coil, an L-type plug connection supplied without the mating connector, integrated indicator and surge-suppression functions, and 1/8-inch A and B working ports.

This valve is suitable for SMT factories, equipment-service companies, machine refurbishers, maintenance departments, and industrial spare-parts distributors. Because externally similar valves can differ in voltage, port size, electrical entry, thread, pilot design, manual override, and accessories, the complete original label should always be checked before ordering.

An SMT placement machine depends on stable pneumatic control to complete repeated mechanical actions. Every air-controlled movement must occur at the correct time and reach the required position before the machine continues its programmed sequence.

After extended service, the valve may experience contamination, coil deterioration, connector damage, internal sealing wear, restricted exhaust flow, or unstable spool movement. These conditions can reduce response speed and lead to intermittent machine faults.

Official operating guidance recommends clean air preparation, including an upstream air filter with filtration of 5 μm or finer. Excessive drainage should be controlled with suitable drying or water-separation equipment.

A machine alarm does not automatically confirm that the valve is defective. The controller output, connector, cable, air supply, regulator, filter, tubing, sensor, actuator, exhaust silencer, and mechanical assembly should also be inspected.

A structured inspection helps maintenance teams identify the actual fault and avoid unnecessary parts replacement.

Two valves can look almost identical while having different operating characteristics.

The official SY5000 configuration data identifies the series, two-position single actuation, 24VDC voltage, LO electrical entry, U-type light and surge suppressor, and 1/8-inch working-port specification.

The SY5000 product family is specified for air service, with an ambient and fluid temperature range of -10°C to 50°C without freezing and configurations rated up to 0.7 MPa.

The following comparison helps distinguish common SY5000 actuation families. The full suffix must still be checked because voltage, plug style, suppressor, port, thread and options may differ.

The valve assembly is used for compressed-air directional control in compatible SMT placement-machine systems. It receives an electrical command and controls the air path connected to a pneumatic actuator or machine mechanism.

Depending on the installed pneumatic circuit, the valve may control:

The precise function of part number 03000630-01 should be confirmed from the machine installation position, pneumatic diagram, service record or removed component.

The valve has five principal pneumatic paths.

When the coil is not energized, the valve remains in its normal position. The internal spool connects the pressure-supply port to one actuator port while the opposite actuator port is connected to exhaust.

The connected pneumatic mechanism therefore remains in or returns toward its normal machine position.

When the controller supplies 24VDC:

1. The solenoid coil produces a magnetic field.
2. The pilot mechanism changes state.
3. Pilot pressure moves the main spool.
4. The internal air passages switch.
5. Supply air flows to the opposite working port.
6. Air from the other actuator chamber is discharged.
7. The connected mechanism changes position.

When the electrical command is removed:

1. Coil current stops.
2. The magnetic field collapses.
3. The pilot section returns.
4. The main spool returns to its normal position.
5. The supply and exhaust paths return to their original state.
6. The actuator completes its return movement.

The indicator light helps maintenance personnel check whether the solenoid is receiving an electrical command.

The surge suppressor helps reduce the voltage spike generated when the coil is switched off. The U configuration is identified as a light-equipped, non-polar surge-suppression type.

An illuminated indicator does not guarantee that air is switching correctly. Insufficient air pressure, internal contamination, blocked exhaust, damaged tubing or mechanical obstruction may still prevent actuator movement.

Before removing the original valve:

• Stop the machine using the approved shutdown procedure.
• Disconnect or isolate electrical power where required.
• Close the compressed-air supply.
• Release stored air pressure.
• Confirm that connected mechanisms cannot move unexpectedly.
• Photograph the original wiring and tubing.
• Label each air tube before disconnection.
• Record the complete valve label.
• Check the fitting direction and mounting position.
• Keep replacement ports protected from dust.

Operating the manual override can immediately actuate connected equipment. Personnel should confirm that the movement is safe before using it. After valve replacement, stored compressed air must be controlled and measures should be taken to prevent sudden actuator movement.

Do not:

• Apply an incorrect coil voltage.
• Install the valve while the circuit is pressurized.
• Block the exhaust ports.
• Allow excessive sealing tape to enter the valve.
• Interchange A and B tubes without checking the circuit.
• Pull the plug by its wires.
• Operate damaged tubing or fittings.
• Leave a locking manual override engaged.
• Modify the coil or valve body.
• Resume automatic production before testing the mechanism.

Official guidance notes that long continuous energization can increase coil temperature and may affect the valve or nearby equipment. Suitable heat management should be considered where extended energization is unavoidable.

Please provide:

1. A full photograph of the installed valve.
2. A close-up photograph of the complete valve label.
3. A photograph of equipment part number 03000630-01.
4. A photograph of the electrical plug.
5. A photograph showing all pneumatic tubes.
6. A photograph of the mounting position.
7. A photograph of the machine model plate when available.

A valve should not be selected only because:

• The body color is similar.
• The physical size appears identical.
• The first part of the model is the same.
• The connector shape looks similar.
• The fitting can be screwed into the port.
• The online product photograph resembles the installed valve.

A small suffix difference can change voltage, plug type, suppressor, thread, pilot design or operating behavior.

Before shipment, the following checks can be performed according to the quoted condition and agreed order requirements.

Functional testing requirements should be agreed before order confirmation because the necessary fixtures and testing procedures may vary.

No. Compatibility depends on the machine configuration and installed pneumatic circuit. Please confirm the machine model, complete original label, part number, voltage, plug, port arrangement, fittings and mounting position before ordering.

The model code identifies a 24VDC standard coil. The machine output should still be measured and confirmed before installation to prevent incorrect operation or electrical damage.

The LO code identifies an L-type plug entry without the mating connector. Confirm whether the order requires the valve only, a separate connector, lead wires, fittings or a complete machine-specific assembly.

Not automatically. Other SY5000 models may have different actuation, voltage, connector, port, thread, pilot or neutral-position characteristics. The complete model and machine-control requirements must match.

Please provide the required quantity, equipment part number, complete valve model, machine model, clear label photographs, connector photograph, installation photograph, requested condition, delivery country and expected delivery date.

Contact our sales team for availability, compatibility confirmation, lead time, pricing, packaging and international shipping information.

To receive a fast and accurate quotation, please include:

• Product name.
• Part number 03000630-01.
• Valve model SY5120-5LOU-01.
• Machine model and serial number.
• Required quantity.
• Clear photographs of the original valve.
• Connector and pneumatic-port photographs.
• Requested product condition.
• Delivery country.
• Required delivery date.

We welcome inquiries from SMT factories, equipment-maintenance companies, machine refurbishers, industrial distributors and electronics manufacturers in Europe, North America, Southeast Asia and other international markets.

Trademark Notice: Brand names and model references are used only for product identification and compatibility confirmation. All trademarks remain the property of their respective owners.