Blocking Devices for Interlocks & Light Curtains

A range of mechanical devices that provide the ability to block existing interlocks or light curtains when personnel enter the safeguarded space, adding an additional level of protection and prevent unexpected start-up.

Osbourn product family showcasing supplementary, retrofittable safety solutions.
Unexpected start-up prevention
Interlock Blocking
Easy integration
Fully mechanical

Benefits of Osbourn

Prevent Unexpected Start-up

With personnel keys and padlockable points protect operators during whole body access where proactive inhibit functions are not already presents.

Easy to Integrate (Retrofittable)

Simple integration to existing interlocked guards and light curtains without having to replace, wire or reprogram existing systems.

Wide Compatibility

Suitable for a wide range of interlocks on sliding or hinged guards, as well as light curtains from various brands.

Simple Installation

Integrated mounting plates make installation simple and efficient, with just two fixings needed.

A Cost-Saving Solution

Fully mechanical devices that do not require any power, wiring, or programming, with considerable monetary savings compared to machine upgrades.

Suitable for Harsh Environments

With a robust stainless steel construction, Osbourn devices are designed for long-term durability, even in harsh environments.

Prevent Unexpected Start-up

With personnel keys and padlockable points protect operators during whole body access where proactive inhibit functions are not already presents.

Easy to Integrate (Retrofittable)

Simple integration to existing interlocked guards and light curtains without having to replace, wire or reprogram existing systems.

Wide Compatibility

Suitable for a wide range of interlocks on sliding or hinged guards, as well as light curtains from various brands.

Simple Installation

Integrated mounting plates make installation simple and efficient, with just two fixings needed.

A Cost-Saving Solution

Fully mechanical devices that do not require any power, wiring, or programming, with considerable monetary savings compared to machine upgrades.

Suitable for Harsh Environments

With a robust stainless steel construction, Osbourn devices are designed for long-term durability, even in harsh environments.

Osbourn Features

Mounting Plate Options

The mounting plate for PBL comes in three variations to support the installation on different brands of light curtains.

Stainless Steel Construction

Suitable for use in a wide variety of applications. Able to operate in dirty, dusty environments and where harsh wash-down procedures are required.

Personnel Keys for Operator Safety

With the key removed, the interlock safety contacts cannot be closed (IBL) and the light curtain beam cannot be restored (PBL), preventing unexpected start-up.

Padlockable Points

Additional personnel entering the area can prevent unexpected start-up by applying padlocks to either the dustcover (for PBL) or the interlock blocking plate (for IBL).

Handing Types

Different orientations available to suit custom applications. Suitable for guards opening/sliding to the left or right, or for either end of a light curtain.

Blocking Plate Options

Depending on the light curtain, the PBL blocking plate is available in three different sizes to appropriately block the light beam.

Feature

Supplementary Devices for Interlocked Guards

Interlock blocking devices (IBL) mechanically prevent hinged (IBL-H) or sliding guards (IBL-S) from closing. 

This prevents the interlock safety contacts from closing whilst operators are within the safeguarded space.

Feature

Supplementary Devices for Light Curtains

With photoelectric blocking devices (PBL) the rotation of a blocking plate interrupts the light curtain beam. 

PBL come in multiple configurations to support installation on different branded light curtain.

Speak to an expert about your access, control and safety needs

Contact our expert sales team to discuss the best solution for your application needs, or use our custom configurator to build the right solution for you.

Osbourn Product Catalogue

PBL4A-3-1-CLSL-MP1
PBL4A-2-1-CLSL-MP1
PBL4A-1-1-CLSL-MP1
PBL2A-3-1-CLSL-MP1
PBL2A-2-1-CLSL-MP1

osbourn Videos

Document Downloads

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