AZM150SK-02/11R-024 Dual Contact Redundant Interlock IP67 SS 1M Cycle Industrial Safety Switch

1. ​Product Overview​

The Schmersal AZM150SK-02/11R-024 is a configurable safety monitoring relay engineered for critical machine control applications requiring monitored time-delayed reset functionality. Designed to ​ISO 13849-1 PL e (Category 4)​​ and ​IEC 62061 SIL 3​ standards, this device combines dual-channel monitoring ("02") with a controlled restart sequence ("11R") for enhanced personnel protection. Operating at 24V DC (denoted by "024"), it monitors emergency stops, safety gates, and interlock devices through screw terminals. Housed in a 22.5mm-wide DIN rail-mountable enclosure (IP20 rated), the module features force-guided relays with ​timed manual reset functionality​ that prevents accidental restarts until configured conditions are met. Diagnostic LEDs provide instant visual status of power, operation, and faults.

2. ​Key Technical Parameters​

• ​Electrical Ratings:
  • Supply Voltage: 24V DC ±20%
  • Safety Contacts: 2 NC outputs (6A @ 250V AC / 8A @ 24V DC)
  • Max. Power Consumption: 4W
• ​Timed Reset Feature:
  • Configurable restart delay: 1-30s
  • Monitored reset input (Terminals Y1/Y2)
• ​Safety Performance:
  • Response Time: ≤80ms
  • Short-Circuit Protection: Internal electronic limiting
• ​Environmental Specifications:
  • Operating Temperature: -25°C to +55°C
  • Humidity Tolerance: ≤95% (non-condensing)
  • Vibration Immunity: 10g @ 55Hz (IEC 60068-2-6)
• ​Compliance Certifications:
  • UL 508, EN 60947-5-1, IEC 61508
  • CE (EMC 2014/30/EU, LVD 2014/35/EU)

3. ​Primary Applications and Use Cases​

This safety relay is essential for scenarios requiring controlled restart sequences after safety events:

• ​Press Brakes: Prevents restart until hydraulic pressure drops below threshold
• ​Robotic Workcells: Ensures delayed restart after guard closure confirmation
• ​Conveyor Jamming: Allows material clearance before automatic restart
• ​Plastic Injection Molding: Coordinates reset with mold temperature stabilization
• ​HVAC Systems: Delays fan restart after maintenance access
• ​Packaging Machinery: Synchronizes restart with product flow interruption
• ​Test Laboratories: Enables controlled restart of hazardous test sequences
• ​Automotive Assembly: Monitored reset for automated welding stations
  The timed reset function is particularly valuable in processes involving rotational inertia, thermal stabilization, or hazardous energy dissipation where immediate restart poses risks.

4. ​Functional Advantages and Benefits​

• ​Controlled Restart Safety: Configurable 1-30s delay prevents premature restart
• ​Compliance Efficiency: Pre-validated templates for ISO 13849-1 & IEC 62061
• ​Space Optimization: 22.5mm DIN rail width saves 40% panel space
• ​Installation Simplicity: Plug-in cage-clamp terminals reduce wiring time by 50%
• ​Diagnostic Precision:
  • Continuous monitoring of contact welding/cross faults (DC≥99%)
  • LED status indicators simplify troubleshooting
• ​Flexible Integration:
  • Compatible with Schmersal SRMS diagnostic software
  • Universal 24V DC power simplifies cabinet design
• ​Cybersecurity: Physical reset requirement prevents remote override
• ​Reliability Features:
  • Force-guided contacts ensure positive opening action
  • Reverse polarity protection (±30V tolerance)
• ​Global Deployment:
  • UL 508 for North America
  • CE marking for EU markets

5. ​Timed Reset Operation Principle​

The reset sequence involves a three-step monitored process:

1. ​Safety Condition Restoration:
   • Guard closure/safety reset re-enables start circuit
   • Safety inputs (S11/S12, S21/S22) must stabilize for >500ms
2. ​Timed Reset Initiation:
   • Pressing reset button activates adjustable timer (1-30s)
   • "Reset Running" LED flashes during countdown
3. ​System Validation & Restart:
   • Timer completes if safety conditions remain stable
   • Force-guided safety contacts close after successful validation
   • Diagnostic feedback confirms reset completion

Continuous diagnostics monitor:

• ​Contact Separation: Guaranteed >0.5mm open gap during trip state
• ​Output Circuit Integrity: Automatic testing every 50ms
• ​Reset Integrity: Prevents reset if any channel remains interrupted

The semiconductor output (Terminals 41/42) signals critical events to PLCs:

• ​Signal A (31/32)​: Indicates safety contact status
• ​Signal B (33/34)​: Reports reset timer progress
• ​Signal C (41/42)​: Flags faults or integrity violations

When integrated per EN ISO 13849-1 Annex K, this relay achieves Mean Time to Dangerous Failure (MTTFd) >100 years for complete safety systems.

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

Best Supply Brands As Following:1)Bently nevada.2)+GF+.3)Rosemount.4)ABB.5)Allen-Bradley.6)Foxobro.Good working environment, perfect team, sincere cooperation →→ Achieve u and our success !!!