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Safety Motor Standstill Monitor | SIL 3 & PL e Certified | 20 Years Mission Time | by SICK
The Safety Motor Standstill Monitor is designed for industrial machinery safety, featuring SIL 3 and PL e certification for high safety integrity. With a 20-year mission time and adjustable voltage threshold, it ensures reliable motor standstill detection, making it ideal for automation systems and safety functions in demanding environments.
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Technical Specifications
- Safety integrity level: SIL 3 (IEC 61508)
- Category: 4 (EN ISO 13849)
- Performance level: PL e (EN ISO 13849)
- PFHD: 41 x 10^-9 (EN ISO 13849)
- Mission time: 20 years (EN ISO 13849)
- Stop category: 1 (EN 60204-1)
- Drive safety function: Standstill
- Connection type: Screw-type terminals, plug-in screw-type terminals
- Conductor cross section: 0.5 mm² to 2.5 mm², single or fine wire with ferrule
- Encoder interface: Motor voltage measuring
- Supply voltage (A1/A2): 24 V DC (21.6 V to 28.8 V)
- Residual ripple: 10%
- Maximum power consumption: ≤ 4 W
- Supply voltage of semiconductor diagnostic outputs (A3/A4): 24 V DC (11 V to 30 V DC)
- Measured/motor voltage: ≤ 690 V AC (≤ 600 V AC for UL 508 applications)
- Voltage threshold Uan: 20 mV to 400 mV, adjustable
- Standstill time ts: 0.2 s to 6 s, adjustable
- Hysteresis for running motor detection: 100%
- Response time: ≤ 100 ms
- Safety outputs: 3 normally open contacts, 1 normally closed contact, relay positively guided
- Nominal switching voltage: 250 V AC
- Switching capacity AC 15: N/O 3 A/230 V AC, N/C 1 A/230 V AC
- Switching capacity DC 13: 1 A/24 V DC
- Maximum switching frequency: ≤ 1200 per hour
- Contact service life: ≥ 200,000 switching operations at 230 V / 5 A AC
- Mechanical life: ≥ 50 million switching operations
- Semiconductor diagnostic outputs: Electrically isolated, short-circuit protected, max 100 mA
- Signal contacts 53/54: 3 A/250 V AC
- Enclosure rating: Terminals IP20, Housing IP40 (EN 60529)
- Climate conditions: 25/060/04 (EN 60068-1)
- Vibration resistance: 10 Hz to 55 Hz (EN 60068-2-6)
- Shock resistance: Single shock 30 g, 11 ms (EN 60068-2-27)
- Mounting: 35 mm mounting rail according to EN 60715
- Dimensions (H x L x W): 112mm x 121mm x 45mm
- Weight: 0.4 kg
Key Features
- Safety integrity level SIL 3 (IEC 61508)
- Category 4 (EN ISO 13849) with Performance Level PL e
- Mean probability of dangerous failure per hour (PFHD) 41 x 10^-9
- 20 years mission time
- Stop category 1 (EN 60204-1)
- Drive safety function: Standstill detection
- Connection via screw-type terminals
- Motor voltage measuring encoder interface
- Supply voltage 24 V DC with max power consumption ≤ 4 W
- Adjustable voltage threshold and standstill time
- Relay safety outputs with positively guided contacts
- High mechanical and electrical contact life
- IP20 terminals and IP40 housing protection
- Mounting on 35 mm rail according to EN 60715
Professional Installation Requirements
- Installation must be performed by a qualified electrician or safety systems professional to ensure compliance with safety standards and proper integration into machinery control systems.
Applications
- Industrial machinery safety monitoring
- Motor standstill detection for safety functions
- Automation systems requiring SIL 3 and PL e safety levels
Standards & Compliance
- AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
- Low power consumption (≤ 4 W) reduces energy usage
- Long service life minimizes waste and replacement frequency
Warranty Information
Standard manufacturer warranty applies; please refer to SICK's official warranty policy for details.
Available Now
The SICK MOC3ZA-KAZ33D3 Safety-Related Motor Standstill Monitor is available for immediate purchase, ideal for industrial safety and automation applications requiring high safety integrity.
