Description
440L-C4K0320YD Allen‑Bradley Safety light curtain
Product Dimensions：
Product Detailed Description
The Allen-Bradley 440L-C4K0320YD is a Bulletin 440L GuardShield™ Type 4 Safety Light Curtain, classified as an Electro-Sensitive Protective Equipment (ESPE) under IEC 61496-1 and -2 standards. It is a cascadable, self-checking active optoelectronic protective device (AOPD) designed for point-of-operation safeguarding, perimeter guarding, and access detection on hazardous machinery. This model features a pair consisting of a transmitter (440L-T4K0320YD) and a receiver (440L-R4K0320YD), utilizing infrared light beams for presence sensing. It provides a protective field height of 320 mm with a 30 mm beam resolution, suitable for hand and finger detection. The system is optically synchronized, requiring no electrical interconnection between the transmitter and receiver, and supports up to three cascaded segments for multi-sided protection. It is ideal for machinery that can be stopped electrically anywhere in its cycle, ensuring fail-safe operation with solid-state OSSD (Output Signal Switching Device) outputs. The unit features DIP-switch configurable modes, including guard-only automatic reset, start/restart interlock, external device monitoring (EDM), fixed/floating blanking, and beam coding to mitigate optical interference.
Product Parameters (Specifications)
The following table summarizes the key technical parameters for the 440L-C4K0320YD:
| Parameter | Specification |
|---|---|
| Resolution | 30 mm (1.18 in.) |
| Protective Field Height | 320 mm (12.59 in.) |
| Number of Beams | 16 |
| Protective Field Range | 0.3 m to 18 m (0.98 ft to 59 ft) |
| Response Time | 20 ms (without coding); 30 ms (with coding) |
| Power Supply | +24V DC ±20% (max. 400 mA unloaded) |
| Power Consumption | 7W max. |
| Outputs | 2 solid-state OSSD (max. 500 mA, short-circuit protected, residual voltage 2V); 1 non-safety auxiliary output (max. 500 mA) |
| Inputs | Machine test signal (min. 100 ms); EDM (activates 300 ms after OSSD); Start/Restart interlock (100–900 ms) |
| Enclosure Rating | IP65 (dust-tight and protected against water jets) |
| Ambient Temperature | Operating: -10°C to +55°C (14°F to 131°F); Storage: -25°C to +75°C (-13°F to 167°F) |
| Humidity | Up to 95% (non-condensing) |
| Vibration Resistance | 10–55 Hz, 0.35 mm amplitude (IEC 61496-1, IEC 60068-2-6) |
| Shock Resistance | 10 g, 16 ms duration (IEC 61496-1, IEC 60068-2-29) |
| Material | Aluminum housing; PMMA (acrylic) optic covers |
| Dimensions (Cross-Section) | 40 mm x 50 mm (1.57 in. x 1.96 in.) |
| Weight (Pair) | 5.33 kg (2.42 lb) |
| Connectors | Transmitter: 4-pin M12 plug; Receiver: 8-pin M12 plug (micro quick-disconnect) |
| Cable Length (Max.) | 30 m (100 ft) |
| Safety Classification | Type 4 (IEC 61496); Category 4/PL e (EN ISO 13849-1); SIL 3 (IEC 61508/EN 62061) |
| PFHd (Dangerous Failure Rate) | 1.95 × 10⁻⁸ (cascading host/guest configuration) |
| Mission Time (T_M) | 20 years (EN ISO 13849) |
| Aperture Angle | ±2.5° (transmitter and receiver) |
| Wavelength | 870 nm (infrared LED) |
These specifications ensure compliance with global safety standards for high-risk industrial environments.
Product Advantages
The 440L-C4K0320YD offers several key advantages that enhance safety, flexibility, and ease of use in industrial settings:
- Superior Safety Integrity: Achieves Type 4 classification with self-checking technology, providing Category 4/PL e and SIL 3 performance for reliable hazard mitigation and minimal downtime.
- Cascading Flexibility: Supports interconnection of up to three pairs (mixing 14 mm and 30 mm resolutions) via M12 connectors, enabling multi-sided guarding for complex machinery without extensive rewiring.
- Advanced Blanking and Coding: Configurable fixed (monitored/teachable) and floating blanking (1- or 2-beam) reduces false trips; beam coding prevents interference in multi-curtain setups.
- User-Friendly Configuration: DIP switches and teach-in procedures allow quick setup of modes like automatic reset, interlocks, and EDM; amber LED aids alignment.
- Robust and Versatile Design: IP65 rating withstands harsh conditions; vibration/shock resistance ensures durability; compatible with mirrors for extended ranges (up to 15 m) and weld shields for spatter protection.
- Fail-Safe Operation: Optically synchronized design eliminates cable failures between units; external test signal enables system validation without physical interruption.
- Cost-Effective Scalability: Modular segments can function standalone or cascaded, simplifying expansion and maintenance while supporting network integration via ArmorBlock Guard I/O options in compatible models.
These features make it a reliable choice for demanding automation applications, outperforming traditional light curtains in adaptability and compliance.
Precautions and Notes
Installation and use of the 440L-C4K0320YD must follow strict safety protocols to prevent injury or malfunction:
- Qualified Installation Only: Must be performed by trained personnel per user manual, ensuring the protective field is the sole access path to hazards. Calculate and maintain minimum safety distances (e.g., using EN ISO 13855 formulas) from the point of operation; do not mount closer than 6 inches to hazards.
- Machinery Compatibility: Suitable only for electrically stoppable machinery with consistent stopping times; not for full-revolution clutched presses or non-electric stop systems.
- Configuration Warnings: Teach-in procedures are required for DIP switch changes—improper setup retains prior modes and may cause lockouts. In cascading systems, restrict advanced modes (e.g., EDM, interlocks) to the host segment only; use termination plugs on the last receiver.
- Environmental and Wiring Precautions: Avoid flammable/explosive areas; ensure power supply bridges 20 ms interruptions and uses double insulation. Never connect OSSD outputs to +24V DC (risk of permanent ON-state). Polarity must be observed; maximum cable length is 30 m.
- Blanking Safeguards: Fixed blanking requires mechanical hard guards to block access through blanked zones; perform risk assessments and test with validation pieces after changes.
- Maintenance and Inspection: Conduct daily checks for unobstructed operation and hazard stopping; six-monthly inspections for cable/mounting integrity and response time. Clean optics with soft cloths only—no abrasives. Unit is non-field-repairable; return to factory to avoid warranty voidance.
- Interference Mitigation: Use beam coding in multi-unit setups; avoid strobe lights or weld spatter (use shields). Do not stand between the field and hazard during operation.
- Disposal: Comply with local RoHS directives and regulations.
Failure to adhere may result in serious injury, death, or equipment damage—always document inspections.
Product Applications
The 440L-C4K0320YD is versatile for safety-critical industrial scenarios requiring moderate- to high-risk operator protection:
- Point-of-Operation Safeguarding: Finger/hand protection on mechanical presses, stamping machines, and assembly stations where intrusion must trigger immediate stops.
- Perimeter and Access Guarding: Secures entry/exit points around robotic cells, conveyors, and automated production lines to prevent unauthorized access.
- Cascaded Multi-Sided Protection: L- or U-shaped guarding for corners or three-sided enclosures on complex machinery, such as packaging equipment or CNC mills.
- Material Handling Systems: Monitors hazardous zones on conveyors or palletizers, ensuring safe loading/unloading.
- Welding and High-Splatter Environments: Paired with disposable weld shields for robotic welding stations.
- General Automation: Presence sensing in manufacturing where Type 4 compliance is mandated, including automotive assembly and heavy industry.
It excels in environments demanding flexible, scalable safety without compromising productivity.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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