Laser Safety Systems class 4 defeatable access recommendations

Our standard LSS-2380 warning module with visual and audible warning abilities mounts cleanly on the surface of the wall beside the entry door. The posted warning sign references this module to warn of the present laser state.

The warning meets the requirements of ANSI Z136.1-2007, sections 4.3.9.4, 4.3.9.4.1, and 4.3.9.4.2

$268

LSS-2381 Interlock control module to arm and disarm the laser interlock system. It is mounted on the wall surface at a convenient location in the laser area. The yellow illuminated arming button reminds workers in the area when the system is armed.

$260

LSS-2384 Laser/Shutter Interface Module attaches to the laser power supply interlock connector. It is mounted on the wall near the laser power supply or on the side of the laser table. The interlock system 24VDC power is brought in at this location from a wall-wart power supply at the same time the relay contacts for the laser are brought out.

$190

A client at a university has a class 4 laser lab with a single door and single laser table.

We cannot stress enough the importance of creating a safe environment in an educational setting. In addition to the liability involved in the event of an injury, the habits learned at a university may eventually be carried through to the work place. ANSI Z136.5-2000 for the Safe Use of Lasers in Educational Institutions requires compliance with the Z136.1 standards.

Class 4 laser areas in a research or university environment usually run long term experiments that require unattended operation. In such cases, defeatable entryway controls are appropriate. By design, persons who have been properly trained and given the keypad access code may momentarily "defeat" the interlock to enter and exit the laser controlled area protected by a magnetically locked door.

Laser Safety Systems recommends the following solution:

One LSS-2385 Door Access Control Kit.

The kit contains all necessary components to interlock a door for defeatable access in accordance with ANSI Z136.1-2007 section 4.3.10.2.2.

The Crash modules on each side of the door satisfy section 4.3.10.2 and fire safety codes that require the magnetic lock release in the event of emergency.

The included magnetic lock is a failsafe device. Removal of power immediately releases the door.

The dual door position switches form a redundant interlock on door position. In the unlikely event sufficient force were used to bypass the magnetic lock, the position switches would sense the unauthorized opening and trip the entire interlock system.

Complete Access Control Kit $1525

A typical entryway using the Laser Safety Systems products. In wall installation is possible

when client has a hollow wall by using low voltage drop-in boxes.

A proper Class 4 laser area setup for defeatable access control. Curtain design and layout varies with environment.

Example of the laser area exit. Note the limited use of surface track when door components must enter the in-wall system.

Example of the laser table interlock control components. Note the clean and effective use of our surface track mounting products when in-wall mounting is not possible.

An alternate method of mounting the laser table interlock control components

using a floor-to-ceiling steel box conduit. (Wiremold or equivalent)

This is common for laser tables placed in the center of a room.

PDF document of a typical installation wiring schematic. The client will receive a schematic that represents their own individual system installation.