faq - EVIL lasers

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frequently asked questions
What is the KORE AIS (Advanced Interlock System) ?

The Advanced Interlock System is a versatile, sophisticated, yet easy to use remote interlock system. As far as we know, the AIS is the only interlock system in the laser show industry that is one-failure-tolerant. This means that if the KORE's interlock system experiences a failure, the KORE will shut off immediately. The cabling is based on 3pin XLR connectors (any microphone/DMX cable works fine) with a completely free wiring topology. AIS supports parallel as well as serial (daisy chain) wiring while maintaining full functionality over distances up to 4km total length. The KORE features a so called "remote interlock input" as well as a "remote interlock output". These labellings shall be considered more as a help of orientation - it has nothing to do with any signal direction. The AIS allows multiple e-stop boxes within the interlock network without defeating each other. They work together and it is possible to stop the lasers from any e-stop in the network. The e-stop boxes are powered by at least one KORE laser projector. Each KORE laser projector can power up to 2 e-stop boxes, meaning that an interlock network with 4 KORE lasers projectors could theoretically enable 8 e-stops. The maximum amount of e-stop boxes in one network shall not exceed 10 though.

Here is an example network:

How does the KORE e-stop box work?

The KORE e-stop box is a perfect fit to any KORE laser projector. It features two female and one male XLR 3 pin connector for flexible cabling. For example, use the male "input" connector for wiring up a second e-stop for another person next to your control gear and use the other two "outputs" for your interlock runs to the stage (one as a backup run).
The e-stop box's logo lights up yellow if there is a KORE laser connected. Make sure that the e-stop is released and the key-switch is in its "on" position. Now push the "activate"-button for at least 5 seconds and all KORE laser projector's emission LED strips will light up. You can also have a look onto your e-stop box as the logo will turn from yellow to white, once all KORE in the network are activated and ready for emission.
If you push the e-stop or turn the key-switch off, the "EMERGENCY STOP" label will light up red and all the projector's emission LED strips will turn off (and therefore laser output will be disabled). Any e-stop box in the network will show that an emergency stop has been performed. All e-stops need to be released and all key-switches will need to be on "on"-position in order to reactivate the lasers again.

Can I use a bridging interlock adapter for automated activation (i.e. for fixed installations)?

The KORE AIS works differently than any other interlock systems on the market. But since we know that there are some situations where a bridging adapter is the only solution for fully automated operations, we ship every KORE with a special interlock connector which enables the laser output 5 seconds after the projector gets powered.
Notice: Any other bridging adapter by other manufacturers will not work (the "Interlock Status" LED will light up red).

What are those status LEDs on the back of the KORE laser projector?

The KORE features 3 different status LEDs showing some useful information for the user.

Interlock Status:
Once a valid e-stop box is connected the interlock status LED will light up orange. This means that a KORE e-stop is detected, but the ILDA interlock pins have not been connected yet. Once the ILDA interlock pins are successfully connected the LED will change to green and the projector is fully connected to all safety devices. A red LED states that there is an error within the interlock network. Either there is an invalid e-stop box connected or there is a broken cable in use.

Temperature Status:
The temperature LED indicates if the projectors temperature is over/under the normal operation limit. If the LED lights blue, the KORE's heat sink is too cold and the internal heating system actively heats up the laser to its perfect operation temperature. If the LED lights up red, the projector is too hot. The fans will operate on full speed to reach perfect operation temperature. During heating/cooling, the projectors output power will be reduced to 50% in order to prevent any damage to the laser diodes.

System Status:
An orange LED indicates that the laser modules aren't at their perfect operation temperature. The Peltier elements will heat up/cool down the modules until they reach their normal operation temperature. During this time, the output power will be reduced to 50%. If the heat sink's temperature isn't at perfect temperature too (temperature status LED lights up), the output power is reduced to even 25%. A green LED indicates perfect working conditions. A red LED indicates an error within the laser projector - in this case you should better contact EVIL lasers for further assistance.

What makes the ColorDRIVE drivers so special?

The ColorDRIVE drivers are high end laser diode drivers with integrated Peltier element drivers. ColorDRIVEs work very fast and precise with no unwanted peaks that would harm connected laser diodes. The ColorDRIVEs work together with the projector's main board: in case of an emergency stop, the drivers shut down and emission will also be disabled. Furthermore they tell the main board if there is any malfunction. The ColorDRIVE can heat up or cool down every single laser module, depending on its needs. The ColorDRIVEs within the KORE are a special version of the original ColorDRIVE series by LIVE Lasersystems.

Can I use a KORE outdoors too? Under what environmental conditions can I use a KORE?

The short answer: Under any in-/outdoor typical stage environment - but also beyond that.
Every laser module within a KORE is equipped with a Peltier element which allows the module be heated up or cooled down due to the ColorDrive driver system with full bridge temperature regulation. Furthermore the KORE has 2-3 high speed fans which operate depending on the heat sink's temperature (up to 50°C ambient temperature).
A very special feature of the KORE is the integrated heating system which makes it possible to operate below zero (down to -30°C with strong wind!).
An optional rain cover made of heavy truck tarp protects the KORE during rain or snow. So, outdoor use under normal wind conditions is no problem at all.

I want a Pangolin FB4 integrated, do I have any disadvantages? Where is the RJ45 connector? I can't find one on the pictures.

There will be no disadvantages. The KORE AIS will be integrated as well as all other KORE features, despite the intensity/size pots and the x-/y-axes switches (the FB4 will handle these features).
Since the RJ45 connector is not meant for professional use on the road, we totally covered this part of the FB4 and extended the leads to a Neutrik Ethercon connector. The Ethercon connector replaces the former USB connector for the advanced safety configuration. Nevertheless, these settings can still be edited via a USB port inside the projector.

Can I use a KORE in TV studios?

The KORE was designed with low noise emission in mind. All power supplies are overbuilt, so the integrated fans will not turn on under normal conditions. The projectors fans are temperature controlled and will most probably not turn on under most conditions as well. You will not hear any noise even if they start ventilating slowly.

Why is there an emission LED strip instead of a single LED?

The strip indicates not only the emission clearance, but also shows if both AIS-circuits work properly. The indicator is devided into two halves - one half for each AIS circuit. Once the whole indicator lights up, it means that there can be laser emission from now on. Furthermore, the LED strip is more visible from different angles, leading to a better safety.

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