Mitsubishi HG-KN73BJ-S100 Replacement for MELSERVO-J4
HG-KN73BJ-S100Drop-in replacement for Mitsubishi HG-KN73BJ-S100 750W AC servo motor. Compatible with MR-J4 drives, MELSERVO-J4 series. 12-month warranty. Fast global shipping.
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When your Mitsubishi MR-J Series servo drive system requires a relay module replacement or upgrade, the CM110YE4-12F is the proven solution for minimizing downtime and preserving your existing control architecture. Whether you are retiring an aging MR-J2S servo amplifier, migrating from an older MELSERVO platform, or simply sourcing a verified spare for your production line, the CM110YE4-12F delivers direct compatibility with the wiring, mounting footprint, and signal interface your system already relies on.
At TOPNLMS, we specialize in sourcing and supplying hard-to-find and discontinued Mitsubishi Electric industrial components. Our inventory of CM110YE4-12F units is tested, documented, and ready for immediate dispatch from our Xiamen warehouse — supporting customers across manufacturing, automotive, food processing, semiconductor, and heavy industry sectors.
| Parameter | Legacy / Replaced Model | CM110YE4-12F (Replacement) |
|---|---|---|
| Series | MR-J2S, MR-J2, older MELSERVO relay modules | MR-J Series (MR-J2S / MR-J3 compatible) |
| Coil Voltage | 12 VDC (nominal) | 12 VDC — direct match |
| Contact Configuration | 4-pole (4NO or mixed) | 4-pole — pin-compatible |
| Mounting Interface | PCB / servo amplifier internal socket | Same PCB socket footprint — no adapter required |
| Communication Compatibility | Analog / pulse-train (SSCNET not applicable) | Fully compatible — relay-level signal isolation |
| Physical Dimensions | Standard MR-J relay envelope | Identical form factor — no panel modification |
| Installation Requirement | Servo amplifier disassembly required | Same procedure — no additional tooling |
| Replacement Recommendation | Direct swap — no parameter change needed | ✔ Confirmed drop-in replacement |
| Warranty | N/A (end-of-life / discontinued) | 12-Month Warranty from TOPNLMS |
A CM110YE4-12F replacement is rarely performed in isolation. In most MR-J Series servo system retrofits, engineers simultaneously address adjacent components to ensure the entire drive train is restored to full operational integrity. During the disassembly of an MR-J2S-100A or MR-J2S-200A servo amplifier, it is common to inspect and replace the MR-J2S regenerative brake resistor unit and the MR-BAT lithium battery for absolute encoder backup — both of which are subject to wear over the same service interval as the relay module.
For systems where the servo amplifier communicates with a Mitsubishi Q-Series PLC or iQ-R Series controller via the SSCNET III/H fiber optic network, the motion control module — such as the QD75MH4 positioning module or RD77MS4 Simple Motion Module — should be verified for firmware compatibility after any servo component replacement. In multi-axis configurations, the MR-J3-D05 safety logic unit and associated MR-J3W dual-axis amplifier wiring harnesses should also be inspected to confirm that relay-level interlock signals remain correctly routed.
Control cabinet integration often requires attention to the MR-J2S-CP servo setup software cable (USB or RS-232 type) for post-replacement parameter verification and test operation. If the cabinet uses a GOT2000 Series HMI (such as the GT2710-VTBA) for operator interface, the servo alarm history and relay status monitoring screens should be cleared and re-commissioned following the swap. For systems with distributed I/O, the CC-Link IE Field remote I/O module connected to the same rack should be checked to ensure that the relay output signals feeding the safety interlock chain are correctly mapped after the replacement.
In retrofit projects where the entire MR-J2S amplifier is being replaced with a newer MR-J4 or MR-J5 Series servo amplifier, the CM110YE4-12F may be required as a spare for the legacy unit being kept in standby. Pairing the relay module with a MR-J4-GF SSCNET III/H compatible amplifier and a HG-KR Series servo motor provides a complete modernized drive solution while retaining backward compatibility at the relay interface level.
Q: Is the CM110YE4-12F a direct drop-in replacement without rewiring?
A: Yes. The CM110YE4-12F uses the same PCB socket footprint and 12 VDC coil voltage as the original relay in MR-J2S servo amplifiers. No rewiring, no adapter, and no panel modification is required. Simply remove the failed relay and seat the replacement unit.
Q: Do I need to change any servo parameters after replacing the relay?
A: No parameter changes are required for the relay replacement itself. However, we recommend connecting via MR Configurator2 or MR-J2S-CP setup cable to clear any stored alarm codes (AL.10, AL.12, or AL.13 relay-related faults) and perform a test run before returning the axis to production.
Q: Is this relay compatible with MR-J3 and MR-J4 Series amplifiers?
A: The CM110YE4-12F is primarily specified for MR-J and MR-J2S Series amplifiers. Compatibility with MR-J3 and MR-J4 depends on the specific amplifier model and internal relay socket. Please provide your amplifier model number when ordering so our technical team can confirm fitment.
Q: What communication protocols does this relay support?
A: As a relay module, the CM110YE4-12F operates at the electrical signal level and is protocol-agnostic. It is compatible with systems using pulse-train (PP/NP), analog (±10V), SSCNET, SSCNET III/H, and CC-Link IE Field command interfaces — the relay handles the physical interlock and power switching function independently of the command protocol.
Q: Can this relay be used in a control cabinet with limited space?
A: Yes. The CM110YE4-12F retains the original compact form factor of the MR-J Series internal relay. No additional DIN rail space or panel cutout is required. It is designed for in-amplifier installation only and does not require external mounting.
Q: What if my original relay model number is different but the amplifier is MR-J2S?
A: Contact us with your amplifier model and the relay part number visible on the failed component. Our engineering team will cross-reference the specification and confirm whether the CM110YE4-12F is the correct replacement or recommend an alternative from our inventory.
Every CM110YE4-12F unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each unit undergoes functional verification including coil resistance measurement, contact continuity testing, and visual inspection for mechanical integrity. Units that do not meet specification are quarantined and never shipped.
Our warranty covers manufacturing defects and functional failure under normal operating conditions. In the event of a warranty claim, TOPNLMS will arrange replacement dispatch or credit within 5 business days of receiving the returned unit and confirming the defect. We do not charge restocking fees for warranty returns.
Orders are typically processed and dispatched within 1–3 business days from our Xiamen warehouse. Express shipping options (DHL, FedEx, UPS) are available for urgent production line requirements. We provide tracking information for all shipments and can issue commercial invoices, packing lists, and certificates of conformity upon request to support customs clearance for international orders.
For volume procurement, OEM supply agreements, or technical pre-sales consultation, contact our team directly. We maintain buffer stock of CM110YE4-12F and related MR-J Series components to support scheduled maintenance programs and emergency breakdown orders.
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