Mitsubishi Electric · Servo Drives & Motors
MELSERVO MR-J4-20A Servo Amplifier 200 W
Part number MR-J4-20A
General-purpose 200 W servo amplifier with pulse-train and analog command, one-touch tuning and 22-bit absolute encoder support.
- CE
- UL
- RoHS
Overview
The MR-J4-20A is the general-purpose (pulse/analog) 200 W amplifier of the MELSERVO-J4 series, paired with HG-KR23 motors. It is controlled by pulse train from an FX5U or a positioning module, offers one-touch tuning and advanced vibration suppression, and supports 22-bit absolute encoders for positioning without homing. Note that Mitsubishi is transitioning to the MR-J5 series; MR-J4 remains available, and we advise on the migration path for new designs.
Key features
- 200 W, single-phase 200–240 V AC supply
- Pulse-train, analog velocity/torque command
- One-touch tuning, 2.5 kHz speed-frequency response
- 22-bit (4,194,304 p/rev) absolute encoder, battery-backed
- Advanced vibration suppression control II, STO via CN8 connector
Typical applications
- Indexing tables
- Pick-and-place
- Precision positioning with FX5U pulse outputs
Technical specifications — MR-J4-20A
| Power | |
|---|---|
| Rated output | 200 W |
| Supply voltage | 1-phase 200–240 V AC |
| Rated current | 1.5 A |
| Control | |
| Command interface | Pulse train (up to 4 Mpps), analog ±10 V |
| Tuning | One-touch tuning, auto-tuning |
| Feedback | |
| Encoder | 22-bit absolute/incremental |
| Safety | |
| STO | Yes (CN8) |
| Environment | |
| Operating temperature | 0…+55 °C |
Specifications are summarised from the manufacturer's documentation for selection purposes. Always confirm against the current datasheet before design-in; we send the datasheet and the exact ordering code with every quotation.
Related part numbers and alternatives
| Part number | Relationship | |
|---|---|---|
MR-J4-20B | SSCNET III/H network version | Quote |
MR-J5-20A | MR-J5 successor — 26-bit encoder, higher response | Quote |
MR-J4-10A | 100 W version | Quote |
Not sure which variant you need? Send us the nameplate photo or the old part number and we will identify the current equivalent.
Supply, documentation and lead time
What you receive
- Genuine Mitsubishi Electric product in original packaging
- Commercial invoice and packing list; Certificate of Conformance on request
- Datasheet, declaration of conformity and country of origin as issued by the manufacturer
- Manufacturer warranty, period stated on the quotation
How we quote
- Reply within one business day with price, lead time and stock position
- Alternatives proposed when they improve price or delivery
- Incoterms of your choice: EXW Hai Phong, FOB/FCA, CIF/DAP to your site
- Consolidated shipments for multi-line orders; export documentation for buyers outside Vietnam
Indicative HS code 8504.40 — final classification is confirmed on the commercial invoice.
Frequently asked questions
Is the MR-J4-20A available from stock, and what is the lead time?
Availability of the MELSERVO MR-J4-20A Servo Amplifier 200 W changes with manufacturer production and distributor stock, so we confirm it per request rather than publishing a number that may be out of date. Send the part number and quantity through the quote form and you will receive stock position and lead time within one business day.
Is the MR-J4-20A genuine, and what documentation comes with it?
We supply only genuine Mitsubishi Electric products sourced from the manufacturer or authorized distribution channels. Each delivery includes the commercial invoice and packing list; a Certificate of Conformance, declaration of conformity and country-of-origin statement are provided on request, and the manufacturer's warranty applies.
Can you ship the MR-J4-20A outside Vietnam?
Yes. We quote EXW Hai Phong, FCA/FOB, CIF or DAP and prepare the export documentation. Buyers in Japan, ASEAN, Europe and North America regularly consolidate multi-brand orders with us into one shipment.
What if the MR-J4-20A is the wrong variant for my application?
Tell us the application in the notes field. Our engineers check the ordering code against your supply voltage, I/O, communication and environmental requirements and propose the correct variant or a successor part before quoting — at no charge.