Airtac DMSJ Electronic Sensor DMSJ-P030
The AirTAC Airtac DMSJ Electronic Sensor DMSJ-P030 is a genuine DMS magnetic position switch. It senses the magnet ring in a pneumatic cylinder's piston and signals when the piston reaches that point, giving a pnp 3-wire output on 5-30 V DC with a 3 m flying lead. It only works on a cylinder that carries a piston magnet.
- TechnologyElectronic (solid-state)
- OutputPNP 3-wire
- Supply voltage5-30 V DC
- ProtectionIP64
- Profile (groove fit)J
- Lead / connector3 m flying lead
- VersionStandard
- RequiresMagnet-equipped cylinder
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac DMSJ Electronic Sensor DMSJ-P030
The DMSJ-P030 is AirTAC's electronic (solid-state) position switch in a PNP 3-wire configuration with a 3 m flying lead. It senses the magnet built into the piston of a magnet-equipped AirTAC cylinder, seating in the cylinder's sensor groove, and feeds a sourcing signal to the controller from a 5-30 V DC supply. General-type construction carries an IP64 rating.
The extra metre of lead over the 2 m version is a routing decision, not a performance one: it reaches past guarding, over the top of a machine frame, or down into a cable duct without needing a junction box mid-run. Because the output is 3-wire PNP, the signal into the PLC input is cleaner than a 2-wire series connection, and as a solid-state part it never suffers the contact bounce or finite contact life of a mechanical reed. Confirm that profile J matches the groove on your cylinder, and remember a cylinder without the magnet option gives the switch nothing to detect.
Airtac DMSJ Electronic Sensor DMSJ-P030 Technical Specifications
| Model | Airtac DMSJ Electronic Sensor DMSJ-P030 |
|---|---|
| Family | DMS — Electronic cylinder switch |
| Technology | Electronic (solid-state) |
| Output | PNP 3-wire |
| Outputs in this family | 2-wire, NPN 3-wire or PNP 3-wire |
| Lead / connector | 3 m flying lead |
| Supply voltage | 5-30 V DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | J (cylinder-groove fit) |
| Profiles in this family | E, G, H, J |
| Detects | Piston magnet ring inside the cylinder |
2-wire versions run 10-28 V DC; NPN / PNP 3-wire versions run 5-30 V DC. IP64 as standard. Order the RW version where coolant, washdown or constant cable flexing is present. Switching distance, response time, current rating, voltage drop, LED behaviour, contact life, weight and dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: Airtac DMSJ Electronic Sensor DMSJ-P030
| DMS | Electronic cylinder switch — electronic (solid-state). |
|---|---|
| J | Profile letter: the mounting / groove type that fits a particular cylinder body. This family offers E, G, H, J. It is a fit code, not a performance grade. |
| P | Output: PNP 3-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 030 | 3 m flying lead. 020 / 030 / 050 / 100 are 2 / 3 / 5 / 10 m flying leads; M08 and M12 are M8 / M12 connector versions. |
| (blank) | Standard version. |
We do not hold the full profile-to-cylinder-series table, so confirm the profile letter against your cylinder model before ordering — send us the cylinder part number and we will check the fit.
Which Family Do You Need?
- DMSElectronic, 2-wire / NPN / PNP, DC
- EMSMini electronic, 2-wire only, DC
- CMSReed contact, 2-wire, 5-240 V AC/DC
The split is electrical, not quality. Solid-state DMS and EMS are DC-only and suit modern PLC inputs; the reed-based CMS switches a much wider window, so it is the one for AC circuits, relay logic and older panels. The RW (IP68) option exists on DMS and EMS only.
| This switch | DMSJ · PNP 3-wire · 5-30 V DC |
|---|---|
| Consider EMS | the mini 2-wire electronic switch for tight installations |
| Consider CMS | the reed alternative for AC circuits and voltages up to 240 V |
| Mounting parts | F-MQ (round body), F-ACT (tie-rod) |
Where the Airtac DMSJ Electronic Sensor DMSJ-P030 Is Used
Press-tool ejection confirmation
On a stamping press tool, the ejector cylinders carry magnets; the DMSJ-P030's 3 m lead reaches from the tool up to the press PLC, confirming parts are ejected before the next stroke.
Pallet-lifter deck position
A warehouse pallet-lifting table uses this switch on its lifting cylinders so the WMS only releases the conveyor once the deck is fully down and the rollers are engaged.
High-speed cartoner ram
The tuck ram of a cartoning machine cycles continuously; the solid-state PNP output gives bounce-free stroke verification at speeds where a reed contact would begin to chatter.
Is the Airtac DMSJ Electronic Sensor DMSJ-P030 the Right Switch?
Pick the DMSJ-P030 when the distance from cylinder to control panel runs 3 m or so and a cut-to-length flying lead beats an in-line connector. If your input card is NPN, order the N-version instead - PNP and NPN 3-wire outputs are polarity-specific. For terminal-box-free runs beyond 3 m there are 5 m and 10 m leads, and M8/M12 connector versions where you want plug-and-go replacement during maintenance. This general type is IP64; the -RW build raises it to IP68 for wet or flexing installations. Match profile J to the cylinder groove before ordering.
Quick checklist
- ✓ Cylinder has a piston magnet
- ✓ Profile letter fits your cylinder groove
- ✓ Output matches the PLC input (PNP 3-wire)
- ✓ Supply rail is 5-30 V DC
- ✓ Lead length or M8 / M12 connector
- ✓ Coolant or flexing? Use the RW version
Installation & Wiring Notes
- check The cylinder must carry a piston magnet — a plain cylinder cannot be sensed.
- check Slide the switch along the groove to the stop position, then lock it.
- check Keep the supply within 5-30 V DC.
- check Wire pnp 3-wire to match the PLC input's polarity.
- check Keep the lead clear of moving parts; use the RW type where it must flex.
- check Rated IP64 — protect it beyond that rating.
Use the F-MQ bracket on round-body cylinders and F-ACT on tie-rod cylinders where there is no groove to seat the switch. Both are ordered separately from the switch. Switching distance and mounting dimensions come from the factory datasheet — ask us for the sheet that matches your cylinder.
Airtac DMSJ Electronic Sensor DMSJ-P030 FAQ
Type: electronic (solid-state) magnetic position switch. Output: PNP 3-wire (sourcing). Supply voltage: 5-30 V DC. Protection: IP64, general type. Wiring: 3 m flying lead. It requires a profile J match with the groove of a magnet-equipped AirTAC cylinder.
A flying lead is trimmed and hard-wired at installation, which keeps cost down but means the switch is wired in place. An M8 or M12 connector version costs a little more but unplugs in seconds when the cylinder needs service. Both carry the same electrical specification - only the wiring differs.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Cylinder Sensors
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Send us the quantity, your cylinder model (so we can confirm the profile fit) and the destination. We confirm price, availability and lead time — usually within 7-8 hours.