SMC SY7120-5DZ-02 电磁阀Selection and 参数指南
Published：2026-09-02 · Brand：SMC · Category：选型指南
SMC SY7120-5DZ-02 is a two-position five-way single electric control model of the SMC SY7000 series 5-way solenoid valve, rated voltage 24 VDC, adopts DIN socket electrical interface with indicator light and overvoltage suppressor, and connects 1/4 of the pipe diameter (Rc thread). As a direct piping unit valve, it is often used to automate the directional reversal control of a single cylinder or pneumatic actuator in the production line. This article organizes the actual parameters and selection points based on the SMC original product pages and catalogs for design reference.
According to the SMC order code interpretation: SY7 represents the SY7000 series; the first digit 1 in 120 represents the two-bit single electric control (2-position single, spring reset); 5 represents the coil rated voltage 24 VDC; D represents the DIN terminal type electrical interface; Z represents the overvoltage suppressor with indicator lamp (and including the power-saving circuit); 02 represents the A/B port connection diameter 1/4; the thread default Rc (optional NPT). When there is no manual operation code, the manual operation is to press in the rotary lock type.
Key parameters: operating pressure (internal pilot) 0.1 ~ 0.7 MPa; coil power consumption 0.1 W (with power-saving circuit); response time (0.5 MPa, with indicator/overvoltage suppression conditions) ≤ 38 ms; flow characteristics Cv about 1.4 (SY7000 reference value); pilot mode internal pilot; seal is rubber seal; environment and medium temperature -10 ~ 50°C (no freezing). The fluid is air, it is recommended to install a filter element below 5 μm before intake.
Compared with the same series SY7120-5DZD-02, both are 2-bit single electric control, 24VDC, 1/4 port, the difference is only in the manual operation parts: the former is the default press-in rotary locking type, and the latter is the slot type press-in rotary locking type (D). For 220VAC power supply, please refer to SY7120-4D-02 (no Z, standard power consumption is about 0.35 W). If you need dual electric control or three-position valve, you can see SY7220 (dual electric control), SY7420 (three-position middle leakage) and so on.
During installation, it is recommended to install a silencer at the P port, the A/B port, and the EA/EB exhaust port; the solenoid valve can be used as a single unit, or it can be integrated with the SS5Y3/SS5Y5/SS5Y7/SS5Y9 bus plate for multi-valve integration. The coil is energized and the voltage is allowed to fluctuate by ± 10%; long-term energization is required to ensure that the ambient temperature is within the specifications. Low-pressure startup (main pressure below 0.1 MPa) should be replaced with an external pilot specification (X20).
The above parameters are subject to the SMC original product page/original factory data; the actual selection should be confirmed by combining the system pressure, flow rate and installation space. Fujian Zhongdi Automation Technology Co., Ltd. supplies SMC original pneumatic accessories, and can provide this model and sister models of the same series as required.
Selection Comparison Table
| Parameter | SY9220-5LZD-03 |
|---|---|
| 系列 | SY7000 |
| Number of Valves/Functions | Two-bit five-way single electronic control |
| Nominal voltage: | 24 VDC（±10%） |
| Electrical Interface | DIN socket type |
| Indicator/Overpressure suppression | With (Z-type, including power-saving circuit) |
| Pipe connector diameter | 1/4（Rc） |
| Operating Pressure Range | 0.1 to 0.7 MPa (internal pilot) |
| 功耗 | 0.1 W |
| Response time | ≤38 ms（0.5 MPa） |
| Traffic characteristics Cv | About 1.4 |
| Ambient/Medium Temperature | -10 ~ 50°C (no freezing) |
Note: Specifications are based on manufacturer public data and may vary by batch. Please verify with current OEM documentation.
FAQ
Q：What does DZ stand for in SY7120-5DZ-02?
A：D means DIN terminal type electrical interface; Z means with indicator light and overvoltage suppressor, and including power-saving circuit, the coil power consumption is about 0.1 W.
Q：02 What is the interface diameter?
A：02 indicates that the A/B port connection pipe diameter is 1/4, and the default thread is Rc; N (NPT) threads can be selected when ordering.
Q：How to choose internal and external pioneers?
A：The default internal pilot of the direct piping unit valve uses a pressure of 0.1 ~ 0.7 MPa; when the main pressure is lower than 0.1 MPa or low pressure start is required, the external pilot specification (X20) can be selected, and the pilot pressure is 0.25 ~ 0.7 MPa.
Q：Can the busbar be installed?
A：Yes, SS5Y3/SS5Y5/SS5Y7/SS5Y9 bus integrated.
Related Models & Brands
› SY7120-5DZ-02 Model Details › SY9220-5LZD-03 Model Details › SY7420-5DZ-02 Model Details › SY7120-4D-02 Model Details › Brand Page