SY3100-5U1-NA: SMC SY3000 Series 5-Port Solenoid Valve (DC24V, with Indicator Light/Overvoltage Protection, Manifold Mounted Base Ported Type)
2026-02-06
I. Model Designation and Basic Parameters
Model Structure: SY3100-5U1-NA
| Code | Meaning | Detailed Description |
|---|---|---|
| SY3100 | Series Code | SMC SY3000 Series 5-port solenoid valve |
| 5 | Rated Voltage | DC24V |
| U | Indicator Light/Overvoltage Protection | With indicator light and overvoltage protection circuit (non-polarized) |
| 1 | Port Size | 1/8″ (Rc1/8) |
| N | Lead-out Method | L-type socket type (for centralized wiring) |
| A | Optional Feature | With 0.3m lead wire |
Main Technical Specifications:
| Characteristic | Specification | Practical Significance |
|---|---|---|
| Valve Body Type | Insert type | Can be mounted on a manifold base |
| Porting Type | Base ported type: Side ports | Centralized piping through the manifold base |
| Operating Pressure Range | 0.15 ~ 0.7 MPa | Working pressure range |
| Maximum Operating Pressure | 0.7 MPa | Maximum allowable working pressure |
| Minimum Operating Pressure | 0.15 MPa | Minimum actuation pressure |
| Actuation Frequency | 5 Hz | Maximum switching frequency |
| Response Time | 15 ms | Solenoid response time |
| Power Consumption | 0.4 W | Coil power consumption |
| Rated Voltage | DC24V | Operating supply voltage |
| Lead-out Method | L-type socket type | Centralized wiring, with 0.3m lead wire |
| Protection Rating | IP67 | Dust and water protection level |
| Ambient Temperature | -10 ~ 50 °C | Operating environment temperature range |
| Fluid Temperature | -10 ~ 50 °C | Medium temperature range |
| Sealing Method | Elastic seal | High sealing reliability |
| Service Life | 200 million cycles (spool seal) 70 million cycles (elastic seal) | Long service life |
| Cv Value (P→A/B) | 1.4 dm³/(s·bar) | Flow coefficient (supply) |
| b Value (P→A/B) | 0.30 | Flow coefficient (supply) |
| Cv Value (A/B→E) | 1.6 dm³/(s·bar) | Flow coefficient (exhaust) |
| b Value (A/B→E) | 0.19 | Flow coefficient (exhaust) |
II. Structural Features and Operating Principle
Structural Components:
- Valve Body Assembly: Insert-type body, mountable on manifold base.
- Solenoid Coil: DC24V coil, with indicator light and overvoltage protection circuit.
- Pilot Valve: Internal pilot-operated structure for fast response.
- Sealing Components: Elastic seal for reliable sealing and long life.
- Port Connections: Base ported type, side ports; A/B ports are ported without base.
- Electrical Connection: L-type socket type for centralized wiring, with 0.3m lead wire.
- Manual Override: Non-locking push-in manual operation for easy commissioning.
Operating Principle:
The SY3100-5U1-NA employs an internal pilot-operated 5-port solenoid valve structure. When the solenoid coil is energized, the pilot valve actuates, controlling the main spool to switch positions, thereby changing the air flow path. The 5-port valve has ports P (supply), A/B (work ports), and E (exhaust), enabling control of double-acting cylinders for reciprocating motion. It features an indicator light and overvoltage protection circuit, allowing for visual confirmation of operating status and coil protection. The insert-type body design allows mounting on manifold bases for centralized multi-valve control.
III. Core Advantages
- Energy-Saving and Space-Efficient Design
- Low power consumption of only 0.4 W for significant energy savings.
- Insert-type body design enables mounting on manifold bases, saving installation space.
- Reduced valve body size with increased flow capacity enhances system efficiency.
- High Reliability
- Elastic sealing method ensures reliable sealing and long service life.
- Service life up to 200 million cycles (spool seal) or 70 million cycles (elastic seal).
- IP67 protection rating ensures excellent dust and water resistance.
- Intelligent Function Configuration
- Equipped with indicator light and overvoltage protection circuit (non-polarized) for clear visual status indication.
- Non-locking push-in manual operation facilitates commissioning and maintenance.
- Fast 15 ms response time and 5 Hz actuation frequency meet rapid response requirements.
- Easy Installation and Maintenance
- Insert-type body allows for quick mounting onto manifold bases.
- Base ported type with side ports for convenient piping.
- L-type socket type for centralized wiring simplifies electrical connection.
IV. Typical Application Scenarios
- Industrial Automation
- Cylinder directional control on automated production lines.
- Air circuit switching for robot end-effectors.
- Material transfer control on automated assembly lines.
- Packaging Machinery
- Material transfer control in packaging equipment.
- Position control in sealing machines.
- Air circuit switching for labeling equipment.
- Material Handling Equipment
- Air circuit control for material handling manipulators/robots.
- Control of conveyors in automated warehousing systems.
- Material transfer control on production lines.
- Testing/Inspection Equipment
- Workpiece positioning control in automated inspection lines.
- Air circuit switching for vision inspection systems.
- Position control in dimensional measurement equipment.
- Machine Tool Equipment
- Tool feed control in CNC machines.
- Actuation control for clamping devices in milling/drilling machines.
- Position control in mechanical processing equipment.
V. Installation and Usage Precautions
Installation Key Points:
- Pre-installation Check: Inspect product appearance for scratches/deformation; verify nameplate markings match design requirements.
- Mounting Orientation: Install solenoid valve vertically with coil facing upwards; avoid horizontal or inverted mounting.
- Piping Connection: Use Rc1/8 fittings; ensure port connections are well-sealed to prevent leaks; tightening torque 7-9 N·m.
- Electrical Wiring: Confirm power polarity and output signal wire definitions per product label; incorrect wiring may cause damage.
- Installation Location: Choose a location with minimal vibration and easy maintenance access; avoid direct exposure to high temperature, high humidity, or corrosive environments.
Usage Notes:
- Operating Conditions: Do not exceed 0.7 MPa operating pressure to avoid overload damage; ambient temperature range -10 to 50°C.
- Medium Requirements: Use clean, dry air; avoid oil, water, or impurities; confirm material compatibility for corrosive media in advance.
- Power Supply Requirements: Supply voltage DC24V; ensure stable power supply within allowable voltage fluctuation range.
- Safety Precautions: Do not use in explosive atmospheres; pressure must not exceed rated pressure range; avoid installation in environments with strong electromagnetic interference.
- Regular Inspection: Periodically check seal condition, electrical connections, etc.; address any leaks promptly.
Maintenance:
- Regular Checks: Periodically inspect appearance, seals, mounting screws, etc., to ensure no damage or looseness.
- Cleaning: Keep ports clean to prevent ingress of contaminants; perform maintenance operations with power disconnected.
- Long-Term Storage: If unused for extended periods, apply anti-corrosion treatment and perform periodic power-on checks for proper operation.
VI. Selection Recommendations
Suitable applications for SY3100-5U1-NA:
- Applications requiring 5-port solenoid valve to control double-acting cylinders.
- Operating pressure range of 0.15 ~ 0.7 MPa.
- Requirement for DC24V power supply with indicator light and overvoltage protection.
- Need for insert-type body mountable on manifold base.
- Need for base ported type with side ports.
- Requirement for L-type socket type for centralized wiring with 0.3m lead wire.
Selection Calculation Reference:
- Pressure Range Selection: Choose appropriate range based on system’s maximum working pressure to avoid reduced accuracy from an oversized range.
- Voltage Specification: Select DC24V or other voltage based on control system requirements.
- Port Size: Choose appropriate port specification based on field piping (1: Rc1/8).
- Options: Select presence of indicator light, overvoltage protection, and lead wire length based on installation needs.
- Mounting Style: Choose suitable mounting style (insert type or single valve) based on installation space and piping direction.
VII. Summary
The SY3100-5U1-NA is a 5-port solenoid valve featuring an internal pilot-operated structure. It offers advantages such as energy-saving and space-efficient design, high reliability, intelligent function configuration, and easy installation and maintenance. With its DC24V power supply, indicator light and overvoltage protection, base ported design, and IP67 protection rating, it is an ideal choice for applications in industrial automation, packaging machinery, material handling equipment, testing/inspection systems, and machine tools. Through proper selection, correct installation, and regular maintenance, this solenoid valve can ensure long-term stable operation, providing a reliable air circuit control solution for users.
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