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A-B 440R-M23048 Safety Relay Module

A-B 440R-M23048 Safety Relay Module

A-B 440R-M23048 Safety Relay Module

  • Item NO.:

    440R-M23048
  • Payment:

    T/T
  • Price:

    $2465
  • Product Origin:

    USA
  • Color:

    NEW
  • Product weight:

    0.01KG
  • Lead Time:

    In stock

We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.Quality packing for each product

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                                                                                                                                                                                                                1.  

                                                                                                                                                                                                                  Allen‑Bradley 440R-M23048 Guardmaster Minotaur MSR15D Safety Relay Module

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                                                                                                                                                                                                                  440R-M23048 Safety Relay
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                                                                                                                                                                                                                  Front Terminal View
                                                                                                                                                                                                                   

                                                                                                                                                                                                                  Product Overview

                                                                                                                                                                                                                  The 440R-M23048 is a dual-channel monitored safety relay from Rockwell Guardmaster Minotaur MSR15D series, designed for machine safety circuits with configurable off-delay timing. It monitors dual NC safety inputs from emergency stop buttons, safety gate interlock switches and light curtains, providing both immediate safety contacts and an adjustable delayed safety contact for controlled machine coast-down and braking sequences. It complies with Category 3 / PLd safety standards and is widely used on automated machinery requiring delayed power cut-off after safety trigger events. This model is discontinued original factory stock, available via surplus and refurbished spare parts.

                                                                                                                                                                                                                  Core Electrical Specifications

                                                                                                                                                                                                                  Power Supply

                                                                                                                                                                                                                  • Supply voltage: 24 V AC / DC universal wide-range input
                                                                                                                                                                                                                  • Power consumption: <4 VA
                                                                                                                                                                                                                  • Impulse withstand voltage: 2500 V
                                                                                                                                                                                                                  • Operating voltage tolerance: -15% ~ +10% nominal voltage

                                                                                                                                                                                                                  Safety Input Circuit

                                                                                                                                                                                                                  • Input configuration: 2-channel redundant NC safety input (dual-channel fault detection)
                                                                                                                                                                                                                  • Compatible devices: E-stop, magnetic safety switches, mechanical guard interlocks, safety mats
                                                                                                                                                                                                                  • Max allowable input wiring resistance: 45 Ω
                                                                                                                                                                                                                  • Cross-circuit short-circuit detection for input fault diagnosis

                                                                                                                                                                                                                  Output Contacts

                                                                                                                                                                                                                  1. Safety outputs (force-guided positive action contacts):
                                                                                                                                                                                                                    • 2 × Instantaneous NO safety contacts (trip immediately when safety circuit opens)
                                                                                                                                                                                                                    • 1 × Adjustable delayed NO safety contact (off-delay 0.1 s ~ 10 s via front potentiometer)
                                                                                                                                                                                                                  2. Auxiliary feedback contact: 1 × NC auxiliary signal contact for PLC/HMI fault monitoring
                                                                                                                                                                                                                  • Contact rating: 4 A resistive @ 250 VAC; AC-15 / DC-13 load rated
                                                                                                                                                                                                                  • Force-guided contact design prevents contact welding single-point safety failure

                                                                                                                                                                                                                  Reset Modes

                                                                                                                                                                                                                  • Selectable via wiring: Automatic reset or monitored manual reset (requires separate reset button)

                                                                                                                                                                                                                  Mechanical & Environmental

                                                                                                                                                                                                                  • Mounting: Standard 35 mm DIN rail horizontal installation
                                                                                                                                                                                                                  • Dimensions (H×W×D): 118 × 73 × 45.5 mm
                                                                                                                                                                                                                  • Net weight: 230 g
                                                                                                                                                                                                                  • Terminal type: Screw-clamp terminals, copper wire 0.5–2.5 mm²
                                                                                                                                                                                                                  • Protection rating: IP20 (indoor control cabinet only)
                                                                                                                                                                                                                  • Operating temperature: -20 °C ~ +60 °C
                                                                                                                                                                                                                  • Storage temperature: -40 °C ~ +85 °C
                                                                                                                                                                                                                  • Humidity: 5%–95% non-condensing

                                                                                                                                                                                                                  Safety Compliance & Certifications

                                                                                                                                                                                                                  • Machinery safety standards: EN ISO 13849-1 Cat.3 / PLd, IEC 60204-1, EN 954-1
                                                                                                                                                                                                                  • Functional safety: SIL CL2 per IEC 61508 / IEC 62061
                                                                                                                                                                                                                  • Certifications: TÜV, UL/cUL, CE marked

                                                                                                                                                                                                                  Status Indicators

                                                                                                                                                                                                                  Front panel multi-color LED indicators for Power supply, Safety input status, Delay output active state, Fault diagnostic codes.

                                                                                                                                                                                                                  Main Functions

                                                                                                                                                                                                                  1. Dual Redundant Safety Circuit Monitoring
                                                                                                                                                                                                                     
                                                                                                                                                                                                                    Constantly monitors two independent NC safety input lines. If a safety door opens or E-stop is pressed, the relay detects input loss and cuts safety output circuits. Dual-channel design detects wire short/open faults to eliminate hidden safety failure risks.
                                                                                                                                                                                                                  2. Immediate + Timed Delayed Safety Shutdown Logic
                                                                                                                                                                                                                  • Two instantaneous safety contacts instantly disconnect main motor contactor power to stop dangerous motion;
                                                                                                                                                                                                                  • The adjustable 0.1–10 s delayed contact maintains power for braking circuits, inverter dynamic braking or spindle coast-down control before full power isolation, avoiding abrupt mechanical damage from instant power loss.
                                                                                                                                                                                                                  1. Dual Reset Operation Modes
                                                                                                                                                                                                                  • Manual monitored reset: Mandatory operator acknowledgment after safety trip, applied for high-risk stamping, cutting and robotic equipment;
                                                                                                                                                                                                                  • Automatic reset: Auto-restores safety circuits after safety guard re-closing, suitable for low-risk fan, conveyor and packaging machinery.
                                                                                                                                                                                                                  1. Auxiliary Fault Signal Feedback
                                                                                                                                                                                                                     
                                                                                                                                                                                                                    Dedicated NC auxiliary contact transmits safety trip status to PLC, HMI or audible alarm systems for remote fault logging and production line status visualization.
                                                                                                                                                                                                                  2. Full Self-Diagnosis for Wiring & Hardware Faults
                                                                                                                                                                                                                     
                                                                                                                                                                                                                    Detects input wire short-circuits, open circuits, internal relay contact faults and power supply anomalies; LED fault codes enable fast on-site troubleshooting without complex testing tools.
                                                                                                                                                                                                                  3. Force-Guided Safety Contact Protection
                                                                                                                                                                                                                     
                                                                                                                                                                                                                    All safety outputs adopt positive force-guided contact structure. If one contact welds closed, the other contacts remain open to guarantee machine shutdown, meeting global Category 3 machine safety requirements.

                                                                                                                                                                                                                  Key Advantages

                                                                                                                                                                                                                  • Integrated adjustable off-delay timing eliminates external timer relays for braking/coast-down safety logic, reducing cabinet component count
                                                                                                                                                                                                                  • Universal 24 V AC/DC power input fits all standard industrial control cabinet power systems
                                                                                                                                                                                                                  • Compact narrow DIN rail housing saves space in dense safety control panels
                                                                                                                                                                                                                  • Dual-channel input monitoring meets mid-level machinery safety PLd/Cat3 requirements without extra expansion modules
                                                                                                                                                                                                                  • Visible front potentiometer for quick delay time adjustment without software configuration
                                                                                                                                                                                                                  • Force-guided safety contacts prevent single contact failure from bypassing safety protection
                                                                                                                                                                                                                  • Simple screw terminal wiring, no special tools required for field commissioning
                                                                                                                                                                                                                  • TÜV certified functional safety design for export machinery and international production lines

                                                                                                                                                                                                                  Typical Applications

                                                                                                                                                                                                                  • Injection molding, metal stamping and CNC machine safety gate + E-stop control with spindle coast-down delay
                                                                                                                                                                                                                  • Packaging, textile and printing machinery conveyor safety interlock with motor braking delay
                                                                                                                                                                                                                  • Robotic work cell safety barrier monitoring with controlled servo power cut-off timing
                                                                                                                                                                                                                  • Hydraulic/pneumatic press safety circuits requiring delayed valve de-energization
                                                                                                                                                                                                                  • Food & beverage washdown production line safety guard interlock systems
                                                                                                                                                                                                                  • Retrofit replacement for legacy MSR15D safety relays on discontinued automation equipment
                                                                                                                                                                                                                  • General machinery safety control panels needing both instant and timed safety shutdown sequences
                                                                                                                                                                                                                   

The structure and details of the product:

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