Product Overview

Mitsubishi QX41 is a MELSEC-Q series digital input module used in PLC control systems, machine automation cabinets, production line equipment, and factory maintenance replacement projects. It is designed to collect discrete field signals from sensors, switches, relay contacts, push buttons, limit switches, and machine status devices, then send these signals to the Q series PLC system for logic processing.

This model is a common spare part for existing MELSEC-Q systems. Digital input modules are frequently required in factory maintenance because input signal failure can affect machine start conditions, safety interlocks, alarm detection, position confirmation, and automatic sequence control. QX41 is therefore suitable for upload as a high-value I/O replacement product page.

Main Features

• MELSEC-Q series digital input module
• Used for discrete signal acquisition in PLC systems
• Suitable for sensors, switches, contacts, and machine status signals
• Applied in production lines, machine panels, and automation cabinets
• Common replacement module for factory maintenance and equipment repair

Technical Specifications

Compatible System and Applications

QX41 is used in MELSEC-Q PLC systems together with Q series CPU modules, power supply modules, base units, output modules, analog modules, and communication modules. It is suitable for packaging machines, conveyors, material handling systems, assembly equipment, machine tools, utility panels, and general factory automation systems.

Maintenance and Replacement Notes

Before replacing QX41, confirm the complete model number, input voltage, field wiring, terminal connection, common wiring method, base unit slot, and PLC program configuration. Input faults may also be caused by sensor failure, loose terminals, cable damage, field power problems, or incorrect wiring logic.

Related Models

Related models include QX41, QX42, QX40, QX40-S1, QX41-S1, QX42-S1, QY40P, QY41P, QY42P, and QY50. These modules may differ by input or output type, point count, voltage specification, connector type, common wiring, and application environment.

Inquiry and Supply Notes

DF Automatic supplies Mitsubishi MELSEC-Q digital input modules, output modules, analog modules, CPU modules, communication modules, power supplies, base units, HMI panels, servo systems, inverter drives, and industrial automation spare parts for factory maintenance and PLC system repair.

Company Profile

DF Automatic supplies industrial automation spare parts, control system components, and replacement parts to customers worldwide.

Our product range covers PLC modules, servo drives, servo motors, variable frequency drives, HMI panels, industrial sensors, pneumatic components, hydraulic components, power supplies, electrical control devices, and industrial communication modules.

These products are used in CNC machinery, packaging equipment, robotics, production lines, water treatment systems, machine rebuilding, equipment maintenance, and other industrial automation applications.

We assist customers with model identification, part number verification, replacement part sourcing, quotation preparation, packing confirmation, and international shipping coordination. Before quotation, customers may provide complete model numbers, order codes, product photos, nameplate information, or technical specifications for verification.

For discontinued, legacy, or difficult-to-source components, we can also help check possible replacement options based on the exact model, hardware configuration, electrical specifications, communication interface, and application requirements.

Our objective is to provide clear product identification, practical sourcing support, reliable order handling, and efficient communication for industrial automation maintenance and spare parts procurement.

Service Scope

• PLC modules, controllers, and control system components  

• Servo drives, servo motors, and motion control components

• Variable frequency drives and AC drives

• HMI operator panels and industrial displays

• Industrial sensors, pressure measurement devices, load cells, and related components

• Pneumatic valves, cylinders, fittings, and accessories

• Hydraulic pumps, valves, cylinders, and control components

• Industrial power supplies, relays, contactors, circuit breakers, cables, and connectors

• Industrial Ethernet, fieldbus, and communication modules

• Legacy and discontinued automation spare parts

• Replacement part identification and model cross-checking

Industries Served

Our products and sourcing services support a wide range of industrial applications, including:

• CNC machinery

• Packaging machinery

• Robotics and automated equipment

• Factory automation and production lines

• Water treatment systems

• Machine building and equipment rebuilding

• Industrial maintenance and repair

• OEM equipment users

• System integrators

• Maintenance companies

• Industrial distributors

Why Choose DF Automatic

Model and Part Number Verification

We check model numbers, order codes, nameplate information, and product specifications before quotation to reduce the risk of incorrect part selection.

Support for Legacy and Discontinued Parts

We assist with sourcing older automation components and checking compatible or replacement options where applicable.

Efficient Quotation Support

Customers can send individual models or complete spare parts lists for quotation and availability checking.

International Order Coordination

We support packing confirmation, shipment preparation, and international logistics coordination according to order requirements.

Flexible Procurement Support

We can handle single replacement parts, urgent maintenance requirements, and larger industrial spare parts purchase lists.

Inquiry Information

For faster product confirmation and quotation, please provide as much of the following information as possible:

• Complete model number

• Part number or order code

• Product quantity

• Product photos

• Nameplate photos

• Required condition

• Technical specifications

• Existing machine or system information

• Destination country or shipping requirements

Important Note

Product availability, condition, price, lead time, configuration, and replacement options depend on the exact model number, part number, order quantity, technical requirements, and current supply conditions.

For products with multiple hardware versions, firmware versions, electrical specifications, communication options, or regional variants, the complete nameplate and order code should be confirmed before purchase.