The Banner Engineering S4B is a family of Type 4 photoelectric safety curtains designed to provide robust protection in industrial applications where operator and machine safety is critical. Its design combines high levels of functional safety with ease of installation, diagnostics, and maintenance.
Operating Principle:
The S4B series uses a modulated infrared light beam between a transmitter and a receiver to create a protected safety "screen." When an object or body part interrupts one or more beams within the defined area, the system detects the obstruction and sends a stop signal to the machine control.
Safety and Certifications
: Safety Category: Type 4 according to IEC 61496-2, which implies a suitable level of protection even for demanding environments.
Performance Level: PL e.
Safety Integrity Level: SIL 3 and CL3.
Protection Rating: IP65, for operation in dusty and splashing environments.
These certifications ensure that the curtain is suitable for protecting operating points, hazardous access points, and other critical areas according to modern industrial safety standards.
Main features
a) Resolution and detection
The series offers models with a resolution of 14 mm (finger capture) and 30 mm (hand capture) depending on the risk application and the minimum object size to be detected.
b) Operating range
The units can cover ranges from a few centimeters up to 12 m distance between transmitter and receiver, allowing use in compact or large access systems.
c) Visual indicators
It has zone and beam status indicators, which facilitate alignment, start-up and diagnosis, reducing maintenance times.
d) Immunity
High immunity to electromagnetic interference (EMI), ambient light, welding flashes and other unfavorable conditions of the industrial environment.
e) Cascade functionality
The curtains can be connected in an automatic cascade, simplifying wiring and reducing installation work without losing safety.
f) Mounting flexibility
There are multiple mounting options (terminal, central or with silencer arm), which allows them to be adapted to different machine configurations.
Operation and Maintenance
Preventive Maintenance Diagnostics: The curtain can warn the control system when the beam intensity decreases — indicating obstructions, dirt or misalignment — facilitating proactive maintenance before safety failures.
Silence kits: available to temporarily allow the passage of parts without stopping the machine when the application requires it, with integrated functions to maintain safety integrity.
Typical applications
The S4B curtain is ideal for protecting operating points in presses, molding machines, robotic cells, assembly lines and automated systems in general, where it is necessary to safeguard high-risk areas without sacrificing productivity.
