Mitsubishi HC-MF23B-UE / HCMF23BUE — 200W MELSERVO J2S / J3 Servo Motor with Brake

Mitsubishi · MELSERVO J2S / J2 / J3 · Low-Inertia Servo Motor · 200V 3Φ · With Electromagnetic Brake · In stock

The HC-MF23B-UE (alias HCMF23BUE) is a 200 W (0.2 kW) class low-inertia AC servo motor from the Mitsubishi MELSERVO HC-MF family. It carries an integrated electromagnetic holding brake and a “UE” connector / lead-exit variant shaft, so it drops directly onto legacy MR-J2S-20A, MR-J3-20A, MR-J4-20A and the newer MR-J5-20G servo amplifiers. KOEED stocks HC-MF23B-UE alongside the full Mitsubishi MELSEC & MELSERVO line, as well as servo motors from Yaskawa Σ-7, Siemens Sinamics and the rest of the nine KOEED brands, so a maintenance engineer can quote a single BOM for the whole line.

Key Technical Specifications & Overview

HC-MF23B-UE sits in the small-capacity, low-inertia slice of the MELSERVO HC-MF range that Mitsubishi introduced alongside MR-J2S and then carried forward into MR-J3 and MR-J4. Rated 200 W continuous at 3000 rpm on 200 V three-phase, the motor is short, high-acceleration, and built around a 17-bit incremental encoder (131 072 pulses/rev) for precise positioning on small axes. The trailing “-UE” suffix designates the connector / lead-exit variant of the standard HC-MF23B, and the “B” in the model code marks the integrated electromagnetic brake for vertical / hold-in-position duty. Where the parameter envelope on a specific build revision matters for your application, send the motor nameplate to Moritta@KOEED.COM and we will cross-check against the official datasheet before shipping.

Application Scenarios & Where It Fits

HC-MF23B-UE is sized for the small, fast, high-cycle axes that define modern semiconductor, electronics and lab-automation equipment. The 200 W continuous rating and 3000 rpm top speed pair naturally with the 200 V 3-phase MR-J2S / MR-J3 / MR-J4 / MR-J5 amplifier class, and the on-board brake means the motor can be mounted on a vertical axis or used as a small conveyor indexer without an external mechanical stop. It is also a common direct replacement for the older MELSERVO J2 HC-MF23B-B variant when a shop is modernising its drives from J2S to J4.

• Semiconductor pick-and-place and die-bonding heads
• SMT placement, screen printing and reflow-oven conveyor indexers
• Small CNC mills, lathes, engravers and tool-room machines
• Packaging machinery — label applicators, wrap stations, cartoning, filling
• Life-science lab automation — pipetting heads, vial handling, plate movers
• Optical inspection stations and KEYENCE vision XY stages
• Small AGV lift / steer axes, AGV conveyor transfer and sortation
• General factory-automation point-to-point positioning where the brake must hold the load during a power cycle

On multi-brand lines, HC-MF23B-UE is usually paired with a Mitsubishi MELSEC CPU (such as a MELSEC-Q or iQ-R module) or an Allen-Bradley CompactLogix / Siemens SIMATIC S7-1500 controller, with a Omron NB / NS or Panasonic GT HMI on the operator panel. Where the line also uses Fanuc CNC, Schneider Modicon I/O, or Yaskawa Σ-7 amplifiers on the heavier axes, KOEED can quote the whole BOM in one email.

Integration & Wiring Notes

HC-MF23B-UE uses the standard MELSERVO small-capacity power and encoder pin-out. The power cable (typically the MR-PWCBL series) carries U / V / W plus protective earth, and the encoder cable (MR-J3ENCBL or MR-J4ENCBL) routes the 17-bit incremental signals back to the drive. The integrated brake is fed from a separate 24 V DC supply through the brake lead in the power / brake combo cable, and the drive’s brake interlock output (typically switched via the CN1 connector) must release the brake before motion starts. Wiring rules:

• Confirm the matching amplifier class before energising: HC-MF23B-UE pairs with the 200 W MR-J2S-20A, MR-J3-20A, MR-J4-20A, or MR-J5-20G. Pairing it with a larger drive (e.g. an MR-J4-40A) will not produce the rated torque envelope.
• Use the cable family that matches the drive generation — MR-J3ENCBL for J3, MR-J4ENCBL for J4, and the equivalent for J2S and J5. Encoder cable pin-outs differ between J3 and J4 even at the same motor model.
• Provide a dedicated 24 V DC brake supply. The brake draws roughly 0.3–0.4 A on the HC-MF class, so a small DIN-rail PSU is sufficient, but it must be tied into the drive’s safety stop path so the brake engages on emergency-off.
• Bond the motor frame to cabinet protective earth at the amplifier end, not at the load end, to avoid circulating currents through the bearings.
• Set the electronic gear ratio and regenerative-resistor parameters in MR-Configurator to the values listed in the drive’s “small motor” table. A mismatched gear ratio is the most common cause of position-error alarms on a field-swap.
• For motion control on a non-Mitsubishi controller, route position commands through CC-Link IE, EtherCAT or pulse-train depending on the drive family. MELSERVO J4 and J5 support both CC-Link IE Field Basic and EtherCAT; J2S and J3 are typically pulse-train or SSCNET.

The mechanical envelope is the same as the standard HC-MF23B: 60 mm flange, 26.5 mm shaft, keyway cut, oil seal on the drive end, and an IP65 body on most build revisions. The “-UE” suffix on this variant routes the cable exit through a connector / lead-outlet layout preferred by OEMs that want a clean cable bend on tight XY stages, so mechanical retrofits from a non-UE variant to a UE variant usually go through a cable-side change only.

Installation & Commissioning Tips

A small Mitsubishi servo swap is fast once the cabling is right. The sequence below is the one most MELSERVO service manuals and our China sourcing QC team agree on:

1. Lock out and tag out the cabinet, then verify zero energy on both the main 200 V bus and the 24 V brake supply.
2. Inspect the encoder and power connectors on the new motor — confirm the “-UE” lead exit is in the orientation that matches the cable gland on the machine, and that the brake lead is on the correct pin.
3. Mount the motor on a clean, flat machine surface. Misalignment on a 200 W small flange is the most common source of vibration and premature bearing wear.
4. Wire the power, encoder and brake with the cable family that matches the drive generation; clip the brake lead to a strain relief on the cabinet side, not the motor side.
5. Power up the drive only, then run MR-Configurator and confirm the encoder is read correctly. A missing or noisy encoder will raise AL.16 (encoder error 1) or AL.1E (encoder error 2) on the first attempt to enable the servo.
6. Release the brake manually through the test screen in MR-Configurator before jogging the axis, and confirm the load is held in position once the brake is re-engaged.
7. Run a low-speed JOG and a short positioning move to verify direction, gain and electronic gear ratio. Tune the auto-tuned gain values from the same screen before locking in the production profile.

If a Mitsubishi alarm code stops the commissioning, KOEED’s PLC error-code database and the AI diagnostic tool both cover the MELSERVO AL.1x and AL.2x series. For panel-builder projects that also use a Panasonic FP or KEYENCE HMI on the same line, the same error-code database covers the controller-side faults.

Procurement, Warranty & Lead Time

KOEED is a multi-brand industrial-automation distributor serving the same maintenance, SI and OEM customers who build the lines around Mitsubishi, Allen-Bradley, Siemens, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE. We stock HC-MF23B-UE alongside the full MELSERVO HC-MF, MR-J2S, MR-J3, MR-J4 and MR-J5 line, so a single RFQ email can cover a 200 W small-axis motor, a 7 kW Mitsubishi MR-J4 amplifier, an Yaskawa Σ-7 drive on the heavy axis, a Allen-Bradley ControlLogix CPU, or a KEYENCE vision head on the inspection station. You deal with one vendor, one shipment, and one quote reply within a business day.

Send the full instrument list (Mitsubishi motors and drives, Allen-Bradley and Siemens controllers, Omron and Fanuc I/O, Yaskawa and Schneider drives, Panasonic and KEYENCE HMIs and sensors) in one email and KOEED will return a single consolidated quotation covering all nine KOEED brands side by side.

Need a current quote, a datasheet excerpt, or a cross-reference for a specific HC-MF23B-UE build revision? Email Moritta@KOEED.COM with the motor nameplate and we will reply within one business day. View our real-time shipping records or jump to Create a Quote for the full multi-line BOM form. To learn more about how KOEED sources and qualifies parts, see About KOEED or Contact Us.