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

1. ​Product Overview​

The Schmersal AZM150SK-02/02RT-024 is a specialized safety relay designed for critical industrial automation control, combining ​dual-channel monitoring (02)​​ with ​monitored manual reset with time delay (RT)​​ functionality. Operating at 24V DC ("024"), this DIN-rail mountable device (22.5mm width) monitors safety gates, emergency stops, light curtains, and other protective equipment with ISO 13849-1 PL e (Category 4) and IEC 62061 SIL 3 compliance. The "RT" feature introduces a configurable time delay (0.5-10s) after reset activation, ensuring controlled restart sequences for high-risk machinery. Encased in an IP20-rated polycarbonate housing, it features force-guided contacts and diagnostic LEDs (power/operation/fault) to simplify troubleshooting in control panels.

2. ​Key Technical Parameters​

• ​Electrical Ratings:
  • Supply Voltage: 24V DC ±20% (19.2V–28.8V)
  • Contact Rating: 6A (250V AC) / 8A (24V DC)
  • Power Consumption: ≤3.8W
• ​Reset Functionality:
  • Time-Delayed Reset: 0.5–10s configurable via potentiometer
  • Monitored Reset Input (Y1-Y2 terminals)
• ​Performance Metrics:
  • Response Time: ≤100ms (channel desynchronization → shutdown)
  • Reset Signal Duration: ≥500ms stable input required
• ​Environmental:
  • Temperature Range: –25°C to +55°C
  • Humidity: ≤95% non-condensing
  • Vibration Resistance: 10g (55Hz)
• ​Compliance:
  • UL 508, EN 60947-5-1, CE EMC/LVD Directives

3. ​Primary Applications​

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

• ​Press Brakes: Delays restart until ram fully retracts
• ​Robotic Welding Cells: Prevents reactivation during electrode cooling
• ​Conveyor Systems: Allows time to clear material jams
• ​Injection Molding Machines: Coordinates reset with ejector sequencing
• ​Test Equipment: Enforces cool-down periods for high-voltage systems
• ​Packaging Machinery: Ensures cutter blades stop completely before restart
• ​Automotive Assembly: Synchronizes reset across tandem safety zones
  The time-delayed reset prevents hazardous restarts during energy dissipation cycles, particularly valuable for rotating equipment (>500 RPM) with inertial coast-down.

4. ​Functional Advantages​

• ​Controlled Restart Safety: Time-delay eliminates premature reactivation risks
• ​Diagnostic Precision:
  • LED indicators (Power/Operation/Fault)
  • Output signal monitoring (Terminals 33-34)
• ​Space Optimization: 22.5mm width fits compact control cabinets
• ​Seamless Integration:
  • Cage-clamp terminals enable tool-free wiring
  • Direct compatibility with Schmersal’s SLC safety controllers
• ​Reliability Features:
  • Force-guided contacts (guaranteed 0.5mm gap)
  • 2 x NC safety outputs (13-14/23-24)
• ​Compliance Ready:
  • Pre-configured templates for EN ISO 13850 & ANSI B11.19
• ​Maintenance Reduction:
  • Automatic contact welding detection
  • Failure rates <0.1% at 1 million cycles

5. ​Timed-Reset Safety Operation​

​Reset Sequence Workflow:​​

1. ​Safety Condition Restoration:
   Guard closure clears safety inputs (S11/S12 & S21/S22 stable >500ms)
2. ​Manual Reset Initiation:
   Actuate external reset button → energize Y1-Y2 terminals
3. ​Time Delay Activation:
   Configurable timer (0.5–10s) holds contacts open
4. ​Safety Restoration:
   Contacts close automatically after time delay

​Critical Safeguards:​​

• Cross-channel monitoring detects circuit tampering (diagnostic coverage ≥99%)
• Undervoltage lockout (<18V) prevents partial reset
• Potentiometer tamper-proofing prevents unauthorized delay changes
• Semiconductor output (terminals 41-42) signals "Reset Active" to PLCs

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.

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