Mitsubishi MR-J2/J2S to MR-J4 Servo Migration Kits
Mitsubishi MR-J2/J2S to MR-J4 Servo Migration Kits
Many facilities are still running critical equipment on Mitsubishi MR-J2 or MR-J2S servo systems. However, as these legacy systems continue to age, replacement parts can become harder to find. As a result, relying on used components may lead to reliability issues, longer downtime, and unexpected repair costs.
Shaltz Automation helps customers move to MR-J4 technology with Pre-Packaged Migration Kits for A-Type and B-Type amplifier applications. These kits are built to simplify the upgrade process, reduce installation challenges, and support a smoother transition with less disruption to production.
With the right migration kit, you can:
- Reuse existing wiring with conversion cables that help reduce rerouting and rewiring
- Simplify installation with drop-in mounting compatibility
- Support accurate parameter conversion to help maintain system performance
- Plan ahead for aging equipment and reduce the risk of unplanned downtime
- Get support from Shaltz Automation for kit selection, upgrade planning, startup, and troubleshooting
Simplify MR-J2/J2S to MR-J4 Upgrades with Complete Migration Kits
Shaltz Automation helps make MR-J2/J2S to MR-J4 upgrades more manageable with Mitsubishi Servo Migration Kits built around the needs of active production environments. In addition, each kit brings together the components needed to simplify the migration, including pre-packaged hardware, exact-fit amplifier options, conversion cables, and flexible motor planning.
As a result, these kits help reduce wiring changes, shorten installation time, and support accurate parameter setup. This makes it easier to modernize aging servo systems while limiting downtime, guesswork, and production disruption.
Pre-Packaged Convenience
Each kit includes the key components needed for your upgrade, including the amplifier, conversion cables, and motor when required. This helps simplify ordering with a single part number and makes inventory planning easier.
Conversion Cables Included
Exact Fit & Mounting Compatibility
Expert Support
Shaltz Automation provides support for parameter conversion, startup, and troubleshooting to help your migration go more smoothly. Most support is available at no cost during normal business hours within our APR region.
Fast, Reliable Upgrades
Flexible Motor & Amplifier Options
Complete Mitsubishi Servo Migration Kits for MR-J4 Upgrades
A-Type Amplifier Kit: MR-J4-A
- Servo Amplifier
- Encoder Conversion Cable
- I/O Conversion Cable (I/O cable require external 24VDC)
- Monitor Conversion Cable
Use Your Existing Wiring
The MR-J4-A kit lets you keep current MR-J2/J2S wiring in place, eliminating the need for rerouting or rewiring. This helps save installation time, reduce wiring errors, and minimize production downtime.
Parameter Conversion for Fast Startup
MR-J2/J2S to MR-J4 parameter conversion is included to help ensure your servo system operates correctly after the upgrade. Pre-configured settings preserve motion profiles and operating parameters, making the transition faster, more reliable, and more efficient.
Same Size and Mounting Compatibility
MR-J4-A amplifiers match the size and mounting patterns of existing MR-J2/J2S units. This drop-in compatibility helps simplify installation, avoid cabinet modifications, and reduce downtime for industrial automation systems.
- Upload parameters from old amplifier
- Replace old amplifier with new amplifier in the cabinet
- Connect existing cables to new conversion cables
- Download converted parameters to new amplifier
- Power up amplifier
- Ready for operation
- Upload parameters from old servo amplifier
- Convert parameters (Full detail instructions will be provided)
- Disconnect existing cables from old servo amplifier and remove amplifier from cabinet (Make sure existing cables are labeled appropriately (they will be reconnected to new amplifier)
- Mount MR-J4 amplifier in the cabinet (MR-J4 amplifiers have the same dimensions for mounting)
- Connect IO, Encoder, and Monitor conversion cables to the MR-J4-A amplifier
- Connect existing cables to their respective conversion cables
- (If using on-board IO) – Connect 24VDC to the 2-pin (red/white) breakout connector on IO conversion cable
- Power up new MR-J4-A amplifier
- Download the converted parameters to the new MR-J4-A amplifier
- Cycle power on MR-J4-A amplifier
- Home servo amplifier
- Ready to begin normal operation
B-Type Amplifier Kit: MR-J4-B
- Servo Amplifier
- Encoder Conversion Cable
- I/O Conversion Cable (I/O cable require external 24VDC)
- Network Conversion Module
No Program Changes Required
The MR-J4-B amplifier is pre-configured in MR-J2S compatibility mode, eliminating the need for programming adjustments and allowing your system to operate immediately after installation.
Pre-Configured for MR-J2S Compatibility
Designed to match MR-J2S parameters, the B-Type kit helps provide a seamless transition to MR-J4 technology without changing existing motion profiles, safety limits, or operating settings.
Quick Swap with Minimal Downtime
A drop-in design and conversion modules help make amplifier replacement fast and efficient, reducing installation time, minimizing downtime, and keeping production running smoothly.
- Attach SSCNET adapter module to the side of the new amplifier
- Replace old amplifier with new amplifier in the cabinet
- Connect existing cables to new conversion cables
- Power up amplifier
- Ready for operation
- Disconnect existing cables from old servo amplifier and remove amplifier from cabinet (Make sure existing cables are labeled appropriately [they will be reconnected to new amplifier])
- Attach the SSCNET adapter module to the side of the MR-J4-B amplifier (The male socket on the side of the SSCNET module connects to the female socket on the side of the amplifier)
- Mount MR-J4-B amplifier in the cabinet (MR-J4-B amplifiers + adapter module have the same dimensions for mounting )
- Connect IO, Encoder, and Monitor conversion cables to the MR-J4-B amplifier (if using)
- Connect existing cables to their respective conversion cables
- (If using on-board IO) – Connect 24VDC to the 2-pin (red/white) breakout connector on IO conversion cable
- Power up new MR-J4-B amplifier
- Home servo amplifier
- Ready to begin normal operation
Technical Considerations for Migration Kits
Flexible Upgrades: Replace the amplifier separately from the existing motor, giving you more flexibility for staged upgrades or backup kit planning.
Motor Replacement Requirement: A motor cannot be replaced on its own. Because MR-J4 motors use higher encoder resolution, the corresponding amplifier must also be replaced.
Compatibility Assurance: Older MR-J2/J2S amplifiers cannot process feedback from MR-J4 motors, so replacing the required components together helps maintain reliable operation.
Minimized Downtime: Separate kit options make it easier to plan upgrades efficiently while keeping production running smoothly.
What It Does: MR-Configurator2 converts existing MR-J2/J2S amplifier parameters into the MR-J4 format, helping ensure the servo system operates correctly after the upgrade.
No License? No Problem: If you do not have MR-Configurator2, you can send Shaltz Automation your existing parameter file and our team can complete the conversion for you.
Why It Matters: Accurate parameter conversion helps preserve motion profiles, safety limits, and operating settings, reducing the risk of errors or unexpected downtime.
Ease and Confidence: Whether parameters are converted in-house or with support from Shaltz Automation, the process helps make your MR-J4 upgrade smooth, efficient, and reliable.
Advanced Control Modes: CP and CL series amplifiers may use specialized positioning methods, including point tables and other modes that do not automatically convert to MR-J4.
Manual Entry May Be Required: Some settings may need to be manually configured on the new MR-J4 amplifier to help preserve existing motion profiles and system behavior.
Our Guidance: Shaltz Automation can gather information about your CP/CL units and identify the correct software steps needed to support a smoother upgrade.
Why It Matters: Properly addressing CP/CL model requirements helps avoid unexpected behavior, maintain precision, and minimize downtime during migration.
Confirm Your MR-J2S Models Before Planning the Upgrade
Confirm your current servo system before planning the move to MR-J4 technology. To make this easier, the complete MR-J2S Motors and Amplifiers list includes compatible models across A, B, CP, and CL series. With this resource, you can identify your units, plan the right migration path, and simplify ordering the correct kit.
Then, download the list to make upgrade planning easier, reduce guesswork, and help minimize downtime during your servo migration.
Migrate Your Servo System with Confidence
Shaltz Automation can support Mitsubishi MR-J2 and MR-J2S servo migrations across A, B, CP, and CL series. A-Type and B-Type applications are the most common, while CP and CL models may require additional review because of advanced positioning methods or specialized settings.
In many cases, the amplifier can be replaced separately from the existing motor, which can support staged upgrades or backup kit planning. However, MR-J4 motors cannot be replaced on their own. Because MR-J4 motors use higher encoder resolution, the corresponding amplifier must also be replaced to maintain proper operation.
No. Mitsubishi Servo Migration Kits include conversion cables that allow you to keep existing wiring in place. This helps reduce rerouting, rewiring, installation time, and potential wiring errors during the upgrade.
Yes. MR-J4 amplifiers are designed to match the size and mounting patterns of existing MR-J2/J2S units. This drop-in compatibility helps simplify installation, avoid cabinet modifications, and reduce downtime.
For A-Type migrations, MR-Configurator2 software converts existing MR-J2/J2S amplifier parameters into the MR-J4 format. If you do not have MR-Configurator2, you can send Shaltz Automation your parameter file and our team can complete the conversion for you. For B-Type migrations, the MR-J4-B amplifier comes pre-configured in MR-J2S compatibility mode.
Shaltz Automation can help with kit selection, parameter conversion, startup guidance, and troubleshooting. Our team can review your current setup, help identify the correct migration kit, and support the technical details needed for a smoother upgrade.
Yes. Migration kits can be ordered for planned upgrades, critical equipment, or backup inventory. Since each kit is packaged under a single part number, it is easier to simplify ordering, support spare parts planning, and prepare for aging servo system failures.
