Sunon MF40201VX-1Q090-S99 — 40mm 12V 0.99W MagLev 4-Wire PWM Cooling Fan

Sunon · MagLev Vapo Bearing · 40×40×20mm · 12V DC · 4-Wire PWM · In stock

The Sunon MF40201VX-1Q090-S99 is a 40×40×20mm DC axial cooling fan built on Sunon's MagLev (magnetic levitation) bearing platform. It runs on 12 V DC, draws roughly 0.99 W, and ships with the standard 4-wire PWM/tach interface used across 1U/2U servers, network switches, industrial PCs, telecom shelves and control cabinets that house Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE control hardware. KOEED stocks the MF40201VX-1Q090-S99 alongside the rest of our industrial automation line card so procurement teams can pull the fan, the PLC, the HMI and the servo drive from a single RFQ to Moritta@KOEED.COM.

The "V" in the suffix marks the MagLev bearing family, which removes the sleeve-bearing wear point and pushes the L10 life well past the 40,000-hour mark typical of 2-ball fans. The "-1Q090" tail encodes the PWM control curve and the "-S99" termination code (4-wire lead with tach feedback). For maintenance engineers who service a mixed fleet of China-sourced and OEM cabinets, that part-number discipline matters when you are cross-checking a nameplate against a replacement quote.

Key Technical Specifications

Application Scenarios — Where the MF40201VX-1Q090-S99 Fits

The 40×40×20mm form factor is the de-facto fan size for shallow enclosures where a 25mm-deep fan simply will not seat. In the KOEED catalog it shows up most often in three families of equipment.

• 1U / 2U rack servers and storage appliances. MagLev eliminates the sleeve-bearing dry-out that historically took out the rear exhaust fan at year three; tach feedback lets the BMC throttle or alarm before thermal shutdown.
• Industrial PCs, HMI panels and PanelView-class operator stations. Mounted behind the CPU backplane, the fan pulls heat away from a CompactLogix, an Omron CP1E stack or a Fanuc I/O Link base. Pair it with a PLC analog calculator when sizing a 4–20 mA chassis-temperature loop.
• Network switches, PoE injectors and telecom shelves. The 4-wire PWM profile matches the standard Intel®/CRPS thermal control pin-out, so the same fan slides into white-box switches and OEM access gear.
• Control cabinets and operator consoles. Used as a roof- or door-mounted extract fan on cabinets housing Yaskawa Σ-7 servo packs, Schneider Modicon M340 racks or Panasonic FP-X PLCs. The silent 0.99 W curve matters in panel rooms where multiple cabinets run side-by-side.
• Vision inspection cells. KEYENCE XG / CV vision controllers, Panasonic laser markers and Fanuc robot controller cabinets all rely on the same 40mm fan footprint for forced-air cooling of the imaging board stack.

If you are quoting a replacement for a cabinet that mixes brands — e.g. a Siemens ET200SP head station next to a Mitsubishi MR-J4 amplifier next to an Omron NB HMI — bundle the fan into the same Create a Quote submission so KOEED can verify the lead-time of the fan against the rest of the BOM. Engineers who want a sanity check on the thermal math before quoting can use the PLC hex-to-float converter to read the tach register out of a Modbus poll.

Integration & Wiring Notes

The MF40201VX-1Q090-S99 follows the industry-standard 4-wire fan pinout. Wire it exactly as the Modbus register map of your controller expects.

When driving PWM from a PLC, the usual pattern is a transistor-output or PWM-capable module: Allen-Bradley 1756-PWM, 1769-PWM or Siemens SM PWM (6EP1331-3BA10 rail). On a Omron CP1H / CJ2M, you can synthesise 25 kHz with a high-speed pulse output. If the host controller has no PWM channel (some small Mitsubishi FX3GE bases), leave Pin 4 open and the fan simply runs at full speed.

Read the tach back through any high-speed counter on the same rack — the typical "2 pulses per revolution" means an 8,000 rpm fan produces ~267 Hz, comfortably inside the input bandwidth of a ControlLogix 1756-IF8H or a Modicon BMXEHC0800. If you are debugging an intermittent "fan fail" alarm at the HMI, run the register value through the PLC error code database to map it to a known fault, and consider the AI diagnostic tool for a one-shot photograph-and-diagnose of a nameplate.

Installation & Commissioning Tips

1. Confirm the depth. 20mm fans require a recess at least 21mm deep; if your chassis is 17–19mm only, ask us about the slimmer PMD1209PTB1A or a 25mm MagLev alternative before quoting.
2. Mind the airflow direction. The arrow on the frame side and the label face opposite to the intake. A reversed fan will under-cool and trip thermal alarms without obvious mechanical failure.
3. Avoid dead-head conditions. Restrict the intake or exhaust by more than ~30 % and the PWM control loop cannot compensate. A quick bench test at 100 % duty before mounting avoids warranty disputes.
4. Torque the screws evenly. 2.5–3.5 kgf·cm on M3 self-tapping screws. Over-tightening warps the UL94V-0 frame and lifts the rotor axis, which is the most common cause of premature bearing noise on a brand-new fan.
5. Validate tach in the controller. After first power-up, force the PWM channel to 50 % and confirm the tach frequency halves proportionally. This catches mis-wires (PWM and tach swapped) before the cabinet ships.
6. Document the BOM line. Tag the cable bundle with the full part number — "MF40201VX-1Q090-S99" — so the next maintenance window in three years' time can match the spare in the parts crib without guessing between a 2-ball and a MagLev variant.

For first-time installers, the KOEED FAQ walks through fan-vs.-heater sizing in sealed cabinets, and the our gallery page has wiring photos of fans landed on Allen-Bradley 1756 racks, Siemens ET200SP bases and Fanuc βi servo packs.

Procurement, Warranty & Lead Time

KOEED treats the Sunon MF40201VX-1Q090-S99 as a stocking line item. Single-piece and tray quantities are available for maintenance spot-buy, and we hold bonded stock for the wider industrial automation catalog that ships alongside it — so the fan, the KEYENCE vision sensor, the Fanuc encoder and the Schneider contactor can be co-quoted, co-packed and shipped in the same export carton.

• RFQ channel. Send the model number, quantity and target delivery to Moritta@KOEED.COM or use the Create a Quote form for multi-line BOMs. Standard RFQ turn-around is within 24 hours on business days.
• Lead time. Stock units ship from our Shenzhen / Hong Kong warehouse the next business day after payment clears. Bonded or large-quantity orders (5,000+ pcs) typically run 2–4 weeks — confirm by email.
• Warranty. New, factory-sealed Sunon parts carry the manufacturer warranty against electrical and bearing defects. Tested / refurbished alternatives are quoted on request and flagged in the line item.
• Worldwide shipping. DHL, FedEx, UPS and freight forwarder terms are all supported; the shipping policy page summarises cut-offs and Incoterms.
• Returns. A 30-day DOA window applies to sealed units; see the return policy for the RMA flow.
• Hard-to-find sourcing. If the cabinet in question needs an end-of-life Sunon part, an OEM-equivalent MagLev variant or a different voltage (24 V / 48 V), add it to the same RFQ — the KOEED China sourcing team is set up to chase obsolete lines that have already left the authorised distributor channel.

Engineers evaluating KOEED as a long-term vendor can read the About KOEED page for the brand story, or jump straight into the contact us page for an out-of-hours WhatsApp / email handoff.

Browse more from all nine supported brands or return to the KOEED home page. Questions on this listing? Email Moritta@KOEED.COM.