1. Introduction
This manual provides essential information for the safe and effective use of the STI MiniSafe MS4300 Series Safety Light Curtain, specifically model MS4348BR. This device is designed to protect personnel from hazardous machinery by creating a sensing field that, when interrupted, sends a stop signal to the guarded machine. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper functioning and safety.
2. Safety Information
Always adhere to all local, national, and international safety regulations and standards when installing, operating, or maintaining this equipment. Failure to do so may result in serious injury or death.
- Ensure power is disconnected before performing any installation, maintenance, or troubleshooting.
- Only qualified personnel should install, operate, and maintain this safety device.
- Do not bypass, modify, or defeat the safety functions of the light curtain.
- Regularly inspect the light curtain for damage or misalignment.
- Verify proper operation of the safety system before each use of the guarded machine.
3. Product Components
The STI MiniSafe MS4300 Series Safety Light Curtain consists of a transmitter and a receiver unit, typically housed in a robust enclosure. Key components include the optical sensing elements, electrical connectors, and mounting provisions.
Figure 3.1: Overall view of the STI MiniSafe MS4300 Series Safety Light Curtain, showing its elongated yellow and black housing.
Figure 3.2: Detailed view of the multi-pin circular electrical connector, typically used for power and signal connections.
Figure 3.3: Section of the light curtain housing, highlighting the black optical sensing strip where the light beams are emitted or received.
Figure 3.4: View of the sealed end cap, protecting the internal components of the light curtain.
Figure 3.5: Product identification label. It displays the Model: MS4348BR, Serial #: AC176712, and Part Number: 42672-0480. Also visible are specifications like minimum object size (0.75in/19mm), range (1-30ft/0.3-9.1m), and enclosure rating (NEMA 4, IP65).
Figure 3.6: Branding on the light curtain, indicating it is part of the STI MiniSafe MS4300 Series.
4. Setup and Installation
Proper installation is critical for the safety light curtain's performance and compliance. Refer to the detailed installation guide provided with the product for specific mounting dimensions and wiring diagrams.
4.1 Mounting
- Identify suitable mounting locations for the transmitter and receiver units, ensuring they are rigidly secured and free from vibration.
- Maintain the specified separation distance between the light curtain and the hazard point, calculated based on response time and machine stopping time.
- Ensure a clear line of sight between the transmitter and receiver, free from obstructions.
4.2 Wiring
- Connect the light curtain to the machine control system according to the provided wiring diagrams.
- Ensure proper grounding and power supply voltage.
- Verify all connections are secure and insulated.
4.3 Alignment
Align the transmitter and receiver units precisely to ensure reliable beam detection. Most systems include alignment indicators (e.g., LEDs) to assist with this process. Adjust until a stable "clear" indication is achieved.
5. Operating Instructions
Once installed and aligned, the STI MiniSafe MS4300 Series Safety Light Curtain operates automatically to monitor the protected area.
5.1 Power On
Apply power to the light curtain system. Observe the status indicators. A green indicator typically signifies a clear path and readiness to operate, while a red indicator or flashing light may indicate an obstruction or fault.
5.2 Normal Operation
When the protected area is clear, the light curtain allows the guarded machine to operate. If an object or person interrupts the light beams, the light curtain will immediately send a stop signal to the machine, initiating a safe shutdown.
5.3 Resetting the System
After an interruption or fault, the system may require a manual reset. Clear the obstruction from the sensing field, then activate the machine's reset button or follow the specific reset procedure for your machine control system.
6. Maintenance
Regular maintenance ensures the continued reliability and safety of your STI MiniSafe MS4300 Series Safety Light Curtain.
6.1 Cleaning
Periodically clean the optical surfaces of the transmitter and receiver units using a soft, lint-free cloth and a mild, non-abrasive cleaning solution. Dust, dirt, or debris can interfere with beam detection.
6.2 Inspection
- Inspect the light curtain for any physical damage, such as dents, cracks, or loose components.
- Check all wiring and connections for signs of wear, fraying, or corrosion.
- Verify that the mounting hardware is secure and that the units remain properly aligned.
- Perform a functional test of the light curtain regularly by intentionally interrupting the beams to ensure the machine stops as expected.
7. Troubleshooting
This section provides guidance for common issues. For complex problems, contact qualified technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Light curtain not operating (no indicators) | No power supply; faulty wiring. | Check power connections and supply voltage. Verify wiring integrity. |
| System indicates fault (red light/flashing) | Misalignment; obstructed beams; dirty lenses; internal fault. | Re-align units. Clear any obstructions. Clean optical surfaces. If problem persists, contact support. |
| Machine does not stop when beams are interrupted | Incorrect wiring to machine control; faulty output. | Verify wiring to machine E-stop circuit. Test output signals with a multimeter. |
8. Specifications
The following are general specifications for the STI MiniSafe MS4348BR Safety Light Curtain. Refer to the product label (Figure 3.5) for specific details.
- Model: MS4348BR
- Part Number: 42672-0480
- Serial Number: AC176712
- Product Dimensions: 6.3 x 6.3 x 54.33 inches (16 x 16 x 138 cm)
- Weight: 13.23 Pounds (6 kg)
- Minimum Object Size: 0.75 inches (19 mm)
- Operating Range: 1-30 feet (0.3-9.1 meters)
- Enclosure Rating: NEMA 4, IP65
- Manufacturer: STI
- ASIN: B015X1N5L6
9. Warranty and Support
For warranty information, technical support, or service inquiries regarding your STI MiniSafe MS4300 Series Safety Light Curtain, please contact the manufacturer, STI, or your authorized distributor. Ensure you have the model number (MS4348BR) and serial number (AC176712) available when contacting support.
Manufacturer Contact: Refer to the manufacturer's official website or product documentation for the most current contact information.
