SMC D-M9PL PNP Solid State Pneumatic Switch, D-M9 Series

This SMC D-M9 series solid-state switch has a power supply voltage between 4.5VDC and 28VDC with a maximum load current of 40mADC. The switch has a lead with a wire length of 3000mm and has a 3-wire PNP output. The internal drop voltage of this switch is 0.8 VDC and consists of a red LED indicator light. The term solid-state pressure switch refers to no moving parts. This means that a pressure switch consists of a relay switch on one of its outputs or a semiconductor-based switching element. Therefore, a solid-state pneumatic switch is the one that uses the semiconductor switching element.

Solid-State Pressure Switches

Solid-state pneumatic switches offer great accuracy and reliability and employ sophisticated sputtered thin-film sensors. High shock and vibration environments have excellent repeatability and are better than electrical switches in high-frequency cycling applications. They also consist of an optional communication interface that sets a set point, a reset point, and a time delay programming in the field. 

Solid-state pneumatic switches may consist of one or more switch points. They are not only involved in opening and closing the pressure switch circuits but have digital displays and offer analog or digital output. Solid-state switches have a longer lifespan than electromechanical pressure switches.

Features and Benefits

• The operating temperature of these switches ranges between -10°C and 60°C.
• Compared to conventional products, their flexibility is 1.5 times more.
• They commonly consist of open contacts.
• These switches get rid of harnessing work using a cable with pre-wired connector specifications.

Electromechanical VS Solid State Pressure Switches

Many electromechanical pressure switches come in a wide variety of appropriate configurations for many applications. They can be utilized for simple to complicated requirements. Some pressure switches are unique because they have a frictionless switching mechanism that increases the movement of the switching element, which results in an increased lifetime, repeatability, and lower dead bands. However, there are many applications for which an electromechanical switch is not appropriate for specific applications. Some systems need solid-state pressure switches. They provide programmable solutions and consist of one to four switch points and digital displays and outputs.

Choosing a Pressure Switch

Pressure switches are vital to be used in gas or fluid control systems. It depends on your applications, and sometimes you may need a base model with no environmental considerations. However, if the conditions are more challenging or rugged, it may require a more robust model that offers water-tight or explosion-proof options. It is sometimes important to consult an expert to help you determine the product’s suitability and choose a suitable model.

You can determine which switch suits your application requirements the best and choose accordingly based on such factors. For some people, it is easy to identify this by themselves, but you might have to consult an expert to get the purchase decision right. However, solid-state switches offer many benefits compared to mechanical switches, such as better accuracy rate, longer lifespan, and shock and vibration resistance. Generally speaking, electromechanical switches are not voltage-dependent and can switch higher currents.

Applications

Solid-State Pressure switches are used in:

• PLCs
• Relays
• IC Circuits

Certifications

• IP67 rated
• CE certified
• UL approved

For more information please check the datasheets.