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The POTTER & BRUMFIELD SDAS-01-7Y2S1024 is a high-reliability Safety Relay Module from TE Connectivity’s acclaimed SDAS series, engineered for critical machine safety applications requiring fail-safe operation. Designed to ISO 13849 and IEC 61508 standards, this dual-channel relay integrates forcibly guided contacts (EN 50205) to prevent unsafe states during welding failures. The SDAS-01-7Y2S1024 monitors safety devices like E-stops, light curtains, and interlock switches, providing redundant fault detection and controlled power interruption for Category 3/4 safety circuits (up to PL e). Its 24VDC coil operates with low power consumption while supporting manual/automatic reset modes. Housed in a compact DIN-rail mountable enclosure, the module features screw terminals for secure wiring and LED status indicators for real-time diagnostics. As a cornerstone of industrial safety systems, the POTTER & BRUMFIELD SDAS-01-7Y2S1024 delivers SIL 3-capable protection that safeguards personnel, prevents equipment damage, and ensures compliance with global machinery safety directives.
POTTER & BRUMFIELD SDAS-01-7Y2S1024
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | SDAS-01-7Y2S1024 |
| Manufacturer | Potter & Brumfield (TE Connectivity) |
| Product Type | Safety Relay Module |
| Contact Configuration | 2 NO (Safety Outputs) + 1 NC (Auxiliary) |
| Contact Rating | 6 A @ 250 VAC / 8 A @ 30 VDC (Resistive) |
| Coil Voltage | 24 VDC (20.4–28.8 VDC range) |
| Dual-Channel Inputs | 2 x Safety Inputs (A1/A2, B1/B2) |
| Reset Modes | Manual (Pushbutton) / Automatic |
| Response Time | ≤ 20 ms |
| Safety Standards | ISO 13849-1 (PL e), IEC 61508 (SIL 3), EN 62061 |
| Forcibly Guided Contacts | Yes (EN 50205 certified) |
| Terminal Type | Screw Clamp (0.2–2.5 mm²) |
| Mechanical Life | 10,000,000 operations |
| Electrical Life | 100,000 operations (at rated load) |
| Operating Temperature | -25°C to +55°C |
| Protection Class | IP20 (Requires enclosure) |
| Dimensions (W x H x D) | 22.5 mm x 99 mm x 114 mm |
| Certifications | UL 508, CSA, EN 60947-5-1, CE |
Main Features and Advantages
Fail-Safe Architecture: The SDAS-01-7Y2S1024 employs redundant internal circuits with cross-monitoring diagnostics. If a contact welds or coil failure occurs, forcibly guided mechanics ensure the NC auxiliary contact opens, signaling a fault while the safety outputs de-energize. This prevents dangerous restart scenarios.
Flexible Monitoring Logic: Dual-channel inputs support diverse safety device configurations – monitor two independent contacts (e.g., E-stop + guard door) or a single device with monitored short-circuit detection. Configurable reset modes (manual/auto) adapt to risk assessments.
High Noise Immunity: Designed for harsh industrial environments, the relay withstands 2 kV surge voltages (EN 61000-4-5) and 40 VDC transient noise without spurious tripping, ensuring stable operation near VFDs or welding equipment.
Simplified Diagnostics: Integrated LEDs provide instant visual status: Power (green), Output On (yellow), Fault (red). The NC auxiliary contact enables remote PLC monitoring for predictive maintenance.
DIN-Rail Efficiency: Compact form factor saves panel space. Compatible with TE’s ZBE-01 bridge connectors for daisy-chaining multiple relays without wiring.
Application Field
The POTTER & BRUMFIELD SDAS-01-7Y2S1024 is indispensable in machinery safety systems where uncontrolled motion or energy release poses risks. In robotic work cells, it interfaces with safety mats and light curtains to halt robots when humans enter hazardous zones. Press lines utilize it to monitor two-hand controls and hydraulic valve interlocks, preventing cycle initiation unless operators’ hands are safely positioned.
Packaging machinery employs the SDAS-01-7Y2S1024 for conveyor emergency stops and guard-lock monitoring, ensuring belts stop before access doors open. Automotive assembly plants integrate it into welding gun controls, de-energizing power within 20 ms during faults. For CNC equipment, the relay monitors spindle rotation and coolant pumps, triggering safe torque-off (STO) functions. In material handling, it safeguards palletizers and automated storage systems by validating gate positions and scanner clearances. Any ISO 12100-defined hazard zone benefits from the SDAS-01-7Y2S1024’s deterministic response.
POTTER & BRUMFIELD SDAS-01-7Y2S1024
Related Products
SDAS-01-7Y2S124: 24VAC coil variant for AC-dominated panels.
SDAS-01-7Z2S1024: Higher-capacity version (10A contacts) for heavy loads.
KJ-1221E: Safety contactor pair for motor power interruption, controlled by the SDAS-01-7Y2S1024.
ZBE-01-05: DIN-rail bridge connector for linking multiple SDAS relays.
9001K3: Push-button reset module for external manual reset.
V4-T4U-1C1: Safety light curtain interfaceable with SDAS-01-7Y2S1024 inputs.
SR6A: Slim-profile safety relay for space-constrained applications.
Installation and Maintenance
Pre-installation preparation: Verify panel environment meets temperature/humidity specs. Isolate control power before wiring. Use shielded cables for inputs exceeding 5m. Confirm safety device compatibility (e.g., NC contacts for E-stops). Ensure DIN rail (35mm) is grounded. Prepare test circuit to validate functionality pre-commissioning.
Maintenance recommendations: Quarterly, inspect terminals for corrosion and retighten to 0.6 N·m torque. Annually, test safety functions via simulated faults (e.g., short inputs, force contact welding). Monitor LED indicators during operation – a red fault LED requires immediate investigation. Replace the SDAS-01-7Y2S1024 if the NC auxiliary contact fails to open during output de-energization. Never bypass safety circuits during troubleshooting.
