Industrial Automation Solution – Mitsubishi MY51 | MELSEC-Q Relay Output Module
Where This Product Is Used
The Mitsubishi MY51 is a relay output unit designed for the MELSEC-Q series programmable logic controller platform. It is widely deployed across demanding industrial environments where reliable discrete output switching is critical:
- Automotive Assembly Lines – Controls solenoid valves, conveyor drives, and robotic end-effectors in body-shop and paint-shop automation cells.
- Food & Beverage Processing – Manages filling machines, capping stations, and packaging conveyors in hygienic production environments.
- Pharmaceutical Manufacturing – Interfaces with batch reactors, sterilization equipment, and cleanroom HVAC actuators under GMP conditions.
- Water & Wastewater Treatment – Drives pump starters, valve actuators, and blower motors in SCADA-integrated treatment plants.
- Building Automation & HVAC – Controls fan coil units, damper actuators, and lighting circuits in large commercial facilities.
- Machine Tool & CNC Centers – Provides tool-change, coolant pump, and spindle brake outputs in precision machining cells.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | MY51 |
| Series | MELSEC-Q |
| Manufacturer | Mitsubishi Electric |
| Output Type | Relay Contact Output |
| Number of Output Points | 16 Points |
| Rated Load Voltage | 240 VAC / 24 VDC |
| Max. Load Current | 2 A per point |
| Isolation Method | Relay |
| Response Time (OFF→ON) | ≤ 10 ms |
| Response Time (ON→OFF) | ≤ 12 ms |
| Weight | 1020 g |
| Compatible Base Unit | MELSEC-Q Series Main Base / Extension Base |
| Operating Temperature | 0 °C to 55 °C |
| Storage Temperature | -25 °C to 75 °C |
| Relative Humidity | 5 % to 95 % RH (non-condensing) |
Why Engineers Specify This Model
- Broad Load Compatibility – Relay contacts switch both AC and DC loads without additional interface relays, simplifying panel wiring.
- Proven MELSEC-Q Ecosystem – Plug-and-play compatibility with Q-series CPUs, power supplies, and GX Works2/3 programming environments.
- High Mechanical Endurance – Rated for millions of switching cycles, reducing unplanned downtime in 24/7 production facilities.
- Galvanic Isolation – Relay isolation protects the CPU backplane from field-side voltage transients and ground loops.
- Compact Slot Footprint – Single-slot module maximizes I/O density on the Q-series base unit.
- Diagnostic LED Indicators – Per-channel output status LEDs enable rapid fault isolation without a laptop or HMI.
Complete System Bill of Materials
For a fully operational MELSEC-Q control panel incorporating the MY51, engineers typically specify:
- Q-series CPU Module (e.g., Q06UDEHCPU)
- Q-series Power Supply Module (e.g., Q62P)
- Q-series Main Base Unit (e.g., Q38B)
- MY51 Relay Output Module ← This item
- QX40 / QX41 Digital Input Module
- QJ71E71-100 Ethernet Communication Module (optional)
- Terminal Block Connector (A6TBXY36 or equivalent)
- GX Works3 Programming Software License
Compliance & Industry Standards
- CE Marking – Compliant with EU Low Voltage Directive and EMC Directive.
- UL Listed – Recognized under UL 508 for Industrial Control Equipment.
- RoHS Compliant – Restriction of Hazardous Substances Directive (EU 2011/65/EU).
- IEC 61131-2 – Programmable Controllers: Equipment Requirements and Tests.
- SEMI E10 – Compatible with semiconductor equipment reliability reporting frameworks.
Quality Assurance & Sourcing
Every Mitsubishi MY51 unit shipped from Konmask.com undergoes the following verification process:
- Visual inspection for physical damage, counterfeit markings, and date-code consistency.
- Functional power-on test to confirm relay coil actuation and contact continuity.
- Cross-reference against Mitsubishi Electric official part number database.
- Anti-static packaging with humidity indicator card for safe international transit.
- Certificate of conformance available upon request for regulated industries.
How to Source This Part
Konmask.com maintains stock of the MY51 for immediate dispatch. To place an order or request a formal quotation:
- Online: Add to cart and check out directly on this page.
- Email RFQ: [email protected] – include quantity, required delivery date, and destination country.
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Bulk / OEM Orders: Volume pricing available for orders of 5+ units. Contact us for a tiered quote.
Application-Specific FAQ
Q: Is the MY51 compatible with the MELSEC-QnA series base units?
A: No. The MY51 is designed exclusively for the MELSEC-Q series base units. For QnA compatibility, please refer to the AY51 or equivalent legacy output modules.
Q: Can the MY51 drive 120 VAC inductive loads such as motor starters?
A: Yes. The relay contacts are rated for 2 A at 240 VAC resistive. For inductive loads, apply a surge suppressor (RC snubber or varistor) across the load coil to extend relay contact life.
Q: What is the recommended replacement interval for relay contacts in continuous-duty applications?
A: Mitsubishi Electric recommends preventive replacement after 300,000 operations under rated load, or per your facility’s planned maintenance schedule.
Q: Does Konmask.com provide a warranty on this module?
A: Yes. All units carry a 12-month warranty against manufacturing defects from the date of shipment. Warranty claims are processed via [email protected].
Q: Can I request a datasheet or wiring diagram before purchasing?
A: Absolutely. Email us at [email protected] with your inquiry and we will provide the official Mitsubishi Electric technical documentation within one business day.
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