SICK RLY3-OSSD200 1085344 Safety Relay Evaluation Unit

SICK RLY3‑OSSD200 is an evaluation unit for safety sensors with OSSD outputs (e.g. light curtains, safety laser scanners). The evaluation unit monitors incoming OSSD signals from the connected sensor and switches two positively‑guided enabling current paths (NO) in the event of a fault, stopping the machine safely with Stop Category 0 (IEC 60204‑1). It features two safety inputs, two application diagnostic outputs (semiconductor, push‑pull, short‑circuit protected) and one test pulse output. Reset modes: manual or automatic. External device monitoring (EDM) function ✔. Front connector with spring terminals for tool‑free wiring. Compact DIN rail housing (width 18 mm). Safety‑related parameters: SIL 3 (IEC 61508), Category 4 (ISO 13849‑1), PL e (ISO 13849‑1), PFHD 1.0 x 10⁻⁹, mission time 20 years. Suitable for industrial safety circuits in packaging, material handling, robotics and general machine safeguarding.

Applications:

• Evaluation of OSSD signals from light curtains (deTec4, miniTec4 series)

• Integration with SICK microScan3, nanoScan3 safety laser scanners

• Emergency stop relay function for emergency stop devices

• Guard door monitoring with interlock switches (require RLY3‑EMSS100 for test pulse output use)

• Pressure‑sensitive mats (4‑wire technology) and two‑hand control (requires RLY3‑1HAND)

Core Specifications:

• Compatible sensor types: Safety sensors with OSSDs

• Safety integrity level: SIL 3 (IEC 61508)

• Category: Category 4 (ISO 13849‑1)

• Performance level: PL e (ISO 13849‑1)

• PFHD (mean probability of a dangerous failure per hour): 1.0 × 10⁻⁹

• TM (mission time): 20 years (ISO 13849‑1)

• Stop category: 0 (IEC 60204‑1)

• Functions: Sensor monitoring, Sequence monitoring, Restart interlock, Reset (automatic / manual), External device monitoring (EDM)

Technical Specifications:

• Supply voltage: 24 V DC (PELV or SELV, 16.8 … 30 V)

• Power consumption: ≤ 2.5 W (DC)

• Safety inputs: 2 (24 V DC, 11 … 30 V HIGH / –3 … 5 V LOW, 4 … 6 mA)

• Test pulse rate (safety inputs): ≤ 10 Hz

• Reset input: 1 (for reset pushbutton or EDM)

• Enabling current paths: 2, positively guided N/O contacts, silver alloy / gold‑flashed, 10 mA … 6 A at 10 … 230 V AC / 10 … 230 V DC, total current 12 A

• Mechanical life: 1 × 10⁷ switching cycles

• Response time: ≤ 10 ms

• Application diagnostic outputs: 2, push‑pull semiconductor, short‑circuit protected, ≤ 120 mA (PNP) / ≤ 15 mA (NPN)

• Test pulse output: 1, PNP semiconductor, short‑circuit protected, test pulse width 2 ms / interval 40 ms

• Connection type: Front connector with spring terminals

• Display elements: LEDs (status)

• Enclosure rating: IP20 (IEC 60529)

• Dimensions (W × H × D): 18 mm × 124.6 mm × 85.5 mm

• Weight: 130 g (approx.)

• Ambient operating temperature: –25 °C … +55 °C

• Storage temperature: –25 °C … +70 °C

• Air humidity: ≤ 95 %, non‑condensing

• Standards: IEC 61508, ISO 13849‑1, IEC 62061, IEC 60204‑1, EN 60947‑5‑1

System Integration:

• This evaluation unit belongs to the SICK ReLy series.

• Install on 35 mm DIN rail (EN 60715) in the control cabinet.

• Wire safety outputs (enabling current paths, positively guided) to a machine primary switching device (contactor).

• The test pulse output can diagnose downstream contactors or muting lamps (verify with manufacturer documentation).

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• RLY3‑EMSS100 (1085345) – For mechanical safety switches (e.g. emergency stop, guard door switches)

• RLY3‑HAND100 – For two‑hand control systems (Type IIIA, IIIC)