Pangolin PASS User Manual Download Page 2

Last update: 2021/04/27 20:10

safety:pass

https://wiki.pangolin.com/doku.php?id=safety:pass

https://wiki.pangolin.com/

Printed on 2022/07/28 09:15

This manual serves as a brief introduction to PASS, so you can install it and get started.

Pangolin provides you with the PASS hardware board, connection cables, and this manual.

You must provide a laser projector including laser, scanners, shutter and power supply.

You must also use a light sensor to ensure maximum protection. An optional control panel may also be
used for maximum flexibility.

PASS is a sophisticated system which, when properly integrated into a laser projector and used with the
proper show presentation techniques and Pangolin software, can assist in maintaining the safety of
Audience Scanning laser shows.

PASS is barely bigger than a credit card, and yet it includes a set of very sophisticated and complete
protection systems.

PASS hardware is designed with multiple levels of redundancy and with circuitry that is designed to fail-
safe. In fact PASS is designed to maintain safety even in the face of several simultaneous failures.

Although the PASS hardware circuit board itself is designed with redundant circuitry, some of the
redundancy of the entire system is provided by external elements, such as the shutter, light sensor, and
projector interlock. This is why these additional items are very important, and mandatory for most uses
of PASS.

This manual discusses how to install, connect, and adjust PASS. You must read and fully understand this
manual before installing and using PASS. Pangolin also conducts private training sessions that integrators
must attend, before Pangolin will sell the PASS hardware.

NOTICE! Pangolin will only guarantee the proper operation of PASS when it is used in conjunction with
Pangolin software and control hardware (i.e. QM2000, FB3 or FB4). In addition, Pangolin strongly
recommends the use of only ScannerMAX series of scanners and servo drivers, or alternatively
Cambridge model 6210 or 6215 scanners with associated servo drivers made by Cambridge Technology.

Summary of Contents for PASS

Page 1: ...FE LASER EXPOSURE This manual contains important information on how to install PASS in a laser projector how to perform adjustments and how to make sure that the show remains safe including a requirem...

Page 2: ...levels of redundancy and with circuitry that is designed to fail safe In fact PASS is designed to maintain safety even in the face of several simultaneous failures Although the PASS hardware circuit...

Page 3: ...intensity outputs PASS will also open the projector interlock signal path ILDA pins 4 and 17 As long as a fast shutter is located within the beam path and as long as the interlock signal path is used...

Page 4: ...Monitor The Beam Power Monitor is perhaps the most unique and important aspect of PASS The Beam Power Monitor is able to make sure that the light coming out of the projector conforms to what is expec...

Page 5: ...the PASS logic the color and intensity signals are blanked the shutter is closed and the projector interlock signal path is opened The system will remain in that state until power is recycled or until...

Page 6: ...CAOM for color Pins 7 and 8 correspond to the Projector Interlock loop pins 4 and 17 from the ILDA connector Note that PASS will interrupt this interlock signal loop in the event of a critical fault a...

Page 7: ...normal circumstances the state of this signal will correspond directly to pin 13 on an ILDA input connector However in the event of a major fault PASS will forcibly close the shutter using this signal...

Page 8: ...an external Emergency Stop ESTOP switch such as a pushbutton or red mushroom type switch When this pin is connected to Pin 2 ground ESTOP is activated When Pin 1 is left oating then ESTOP is inactive...

Page 9: ...or not PASS is ready to be activated armed If this signal is HIGH it indicates that the power supply is OK ESTOP is not activated and light is not detected and thus PASS may be activated by performin...

Page 10: ...r light detector failure Note that unlike the other LED outputs on the control panel connector the Status LED outputs will latch in the event that a fault is detected They will remain in the latched s...

Page 11: ...y additional ground wire from each scanner ampli er to the PASS board Doing so would introduce a ground loop which may cause distorted images If you are using a one dual axis scanner ampli er the reco...

Page 12: ...is moved to the left on the Horizon control is monitored and PASS will only allow static or slow beams above the horizon If there is a slow moving or non moving beam below the horizon it will be exti...

Page 13: ...red to sweep in X and or Y in order to be considered to be safe At the factory Pangolin sets this to around 5 radians per second Note that the scale of this control in radians per second depends on th...

Page 14: ...i color LED on the PASS board Also note that the Maximum Safe Beam Power and Minimum Power adjustments are ignored if the switch 4 is turned on see switches on page 20 PASS Adjustment Procedure NOTE T...

Page 15: ...hen it is in the audience area Once this is done with the slow moving circle COLLAPSE the Y axis change Y size to zero in the software which will project essentially a slow moving horizontal beam cent...

Page 16: ...terms of Watts Per Square Centimeter also known as irradiance instead of Watts also known as radiant power This is an important concept that must be understood The laser safety standards are based on...

Page 17: ...til it trips We also recommend that you run a number of test patterns and show program material with the brightness set to the maximum safe power determined above i e 27 If the projector occasionally...

Page 18: ...e is not overloaded with light and merely delivering a saturated maximum voltage to the oscilloscope as this will arti cially lengthen the pulse width The PDA100A photodiode has an attenuator dial on...

Page 19: ...as the nal shutter opens faster than around 1 20th of a second Generally the light sensor is fashioned as a glass window that is used to sample the outgoing laser beam at a 45 degree or so angle and d...

Page 20: ...with the spectral attening lter attached and logarithmic ampli er board is the model SEL033 detector with model F at response ler and model A430 ampli er all available from International Light Techno...

Page 21: ...g with the other projector features for example no doubt including a lens installed either inside or outside the laser projector to increase divergence to help ensure audience safety Finally the audie...

Page 22: ...stments on PASS must be con gured properly for the scanning velocity and dwell time as well as the projection horizon if used Moreover the light sensor related adjustments on PASS must be con gured to...

Page 23: ...2022 07 28 09 15 23 26 PASS Complete Help Docs https wiki pangolin com Dimensions and mounting holes...

Page 24: ...m PASS This Agreement provides you with the authorization to use PASS subject to the terms and conditions herein If you do not agree to all the terms and conditions of this Agreement do not use PASS I...

Page 25: ...Pangolin without Pangolin s prior written consent AGREEMENT LENGTH AND TERMINATION PROCEDURE This Agreement is e ective until terminated 4 You may terminate this Agreement at any time by sending writt...

Page 26: ...owing deposit with the mail carrier for all other allowable forms of notice ENTIRE AGREEMENT This Agreement constitutes the entire agreement with respect to the use of 11 PASS and supersedes all prior...

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