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HA-SC23
HA-SC23
HA-SC23

Mitsubishi HA-SC23 200W Servo Motor

  • Model: HA-SC23
  • Brand: Mitsubishi Electric
  • Series: MELSERVO-SC
  • Core Function: Servo motor for precision motion control
  • Product Type: AC servo motor
  • Key Specs: 0.2 kW rated output; 3,000 r/min; 4.2 A peak rated current
  • Compatible Amplifier: MR-SC20
  • Condition: Verify actual stock condition before ordering
  • Status: ⚠️ Legacy/obsolete model — replacement availability should be checked

The Mitsubishi documentation identifies HA-SC23 as a 0.2 kW motor matched with the MR-SC20 servo amplifier.

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Description

Key Technical Specifications

Parameter Value
Model HA-SC23
Brand Mitsubishi Electric
Servo Series MELSERVO-SC
Motor Type AC servo motor
Rated Output 0.2 kW
Rated Speed 3,000 r/min
Compatible Servo Amplifier MR-SC20
Rated Current 4.2 A peak-to-peak / 1.5 A RMS
Feedback Motor encoder / detector
Encoder Connection CN2 via Mitsubishi servo amplifier
Permissible Radial Shaft Load 176 N at L = 30 mm
Permissible Thrust Load 147 N
Recommended Shaft Coupling Flexible coupling
Operating Ambient Temperature 0–40 °C
Ambient Humidity 80% RH or less, non-condensing

Mitsubishi’s MELSERVO-SC documentation lists HA-SC23 under the MR-SC20 combination, with a 0.2 kW motor rating and 3,000 r/min speed. The same documentation specifies 176 N permissible radial load and 147 N permissible thrust load at the stated shaft-load condition.

 

Product Introduction

The Mitsubishi HA-SC23 is a 0.2 kW AC servo motor from the MELSERVO-SC family, designed for closed-loop positioning and motion-control applications. Mitsubishi specifies the HA-SC23 for use with the MR-SC20 servo amplifier.

For legacy equipment, the original motor/amplifier pairing matters. Mitsubishi states that the HA-SC23 can be operated with an MR-H20AN when the MR-H-E02 option card is installed. For a migration to current motor technology, Mitsubishi identifies HC-MF23 as the corresponding replacement, but explicitly notes that it does not have mounting compatibility with the HA-SC23.

HA-SC23

HA-SC23

HA-SC23

HA-SC23

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — 5–10 minutes

⚠️ Safety First: Stop the machine and place the axis in a safe mechanical state. Apply lockout/tagout before disconnecting the servo system. Do not work on the motor or amplifier while energized.

Tools Required:

  • ESD wrist strap
  • Phillips screwdriver
  • Multimeter
  • Wire labels
  • Camera or smartphone
  • Appropriate mechanical alignment tools

Data Backup:

  1. Record the existing nameplate information.
  2. Photograph motor power and encoder connections.
  3. Record the existing MR-SC20 parameter settings.
  4. Photograph all amplifier configuration settings before removal.
  5. Record the existing motor-to-machine coupling arrangement.
  6. Keep the old motor available until commissioning is complete.

Stage 2: Removing the Old Motor — 10 minutes

  1. Verify that servo power is isolated.
  2. Confirm that the mechanical load cannot move unexpectedly.
  3. Label the U/V/W motor leads and encoder cable.
  4. Disconnect the motor power and detector connections without pulling on the cable.
  5. Remove the mechanical coupling.
  6. Remove the motor mounting bolts.
  7. Withdraw the motor without striking the encoder.
  8. Inspect the coupling, shaft, mounting face, and cable condition.

⚠️ Do not use the encoder housing as a lifting or carrying point. Mitsubishi specifically warns against mechanical shock to the encoder during transportation and installation.

Stage 3: Installing the New HA- — 10 minutes

  1. Verify that the replacement nameplate reads .
  2. Check the motor shaft and mounting surface for damage.
  3. Install the motor without forcing the shaft into alignment.
  4. Use a flexible coupling where appropriate.
  5. Align the motor shaft with the driven machine shaft.
  6. Tighten mounting hardware according to the machine manufacturer’s specified torque.
  7. Reconnect U/V/W motor power leads.
  8. Reconnect the encoder/detector cable.
  9. Verify grounding continuity.

Mitsubishi specifies a permissible shaft-core alignment difference of 0.05 mm or less in the referenced installation procedure.

Self-Checklist:

  • Correct HA- model
  • Mounting face clean
  • Shaft alignment checked
  • Coupling installed correctly
  • U/V/W wiring verified
  • Encoder connection secured
  • Ground connection verified
  • Mechanical fasteners tightened

Stage 4: Power-On & Testing — 5–10 minutes

  1. Check the motor circuit for wiring errors before energizing.
  2. Verify the MR-SC20 amplifier is configured for the HA-.
  3. Mitsubishi documentation identifies the motor combination as a parameter setting; an incorrect motor/amplifier combination can generate a parameter error and may damage the motor.
  4. Power the servo system with the machine in a controlled state.
  5. Check the amplifier display for alarms.
  6. Confirm encoder feedback.
  7. Perform a low-speed jog.
  8. Check direction of rotation.
  9. Verify positioning accuracy.
  10. Gradually return the axis to normal operating speed and load.

⚠️ Do not assume a physically similar servo motor is electrically interchangeable. The servo amplifier’s motor-selection parameters must correspond to the installed motor.

Legacy Replacement Note

If the original MR-SC20 system is being migrated, Mitsubishi documents the following relationships:

  • HA- → MR- in the original MELSERVO-SC system.
  • HA- → MR-H20AN + MR-H-E02 when using the HA- with the MR-HAN platform.
  • HA- → HC-MF23 as a Mitsubishi-identified current replacement, but Mitsubishi states that the HC-MF23 does not have mounting compatibility with HA-. Mechanical dimensions and specifications therefore need to be checked before migration.

 

Frequently Asked Questions (FAQ)

Can the Mitsubishi HA- be used with an MR-?

Yes. MR- is the documented matching servo amplifier for HA- in the MELSERVO-SC system. The amplifier’s motor parameter must be configured for the HA-.

Is the HA- still a current Mitsubishi servo motor?

The HA- belongs to Mitsubishi’s older MELSERVO-SC generation. Mitsubishi’s current documentation identifies newer servo families, while its legacy migration documentation provides replacement guidance for HA-. Treat HA- as a legacy replacement part and verify stock and condition before purchase.

What is the Mitsubishi replacement for HA-?

Mitsubishi’s FAQ identifies HC-MF23 as the replacement corresponding to HA-. However, Mitsubishi explicitly states that the HA- and HC-MF23 are not mounting-compatible, so this should be treated as a migration rather than a simple mechanical drop-in replacement.

Can HA- work with an MR-H20AN?

Yes, Mitsubishi states that the MR-H20AN can operate HA- when equipped with the MR-H-E02 option card. One option card is required per amplifier.

What should I check before replacing an HA-?

Check the complete motor/amplifier combination, nameplate data, encoder connection, mechanical mounting dimensions, shaft alignment, coupling, and amplifier parameters. Do not select a replacement solely from the 0.2 kW rating.

What are the shaft-load limits for HA-?

Mitsubishi’s installation documentation specifies a permissible radial load of 176 N and thrust load of 147 N, with the radial-load value specified at L = 30 mm from the flange mounting surface to the load center. These limits apply independently.

Does the programming stay in the HA-?

The motor itself does not contain the PLC or motion-program logic. In an MR–based system, the relevant control parameters reside in the servo amplifier/control system. Before replacement, document and back up the amplifier parameters, then verify the motor-selection parameter after installation.

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