Pangolin PASS User Manual Download Page 8 | Manualshive

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Pangolin PASS User Manual Download Page 8

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

PASS may be controlled by, and may illuminate LEDs on an external control panel that is connected to
PASS. Below is a description of the control panel connections. When PASS is not connected to an external
control panel, then PASS will automatically reset into a “ready” state shortly after power up. When PASS
is connected to an external control panel, then PASS will not power up in a “ready” state and instead, will
wait for the “Manual Reset” from the control panel.

Note that some jurisdictions including the U.S.A. require a manual reset in order to activate the projector
after power up. The PASS control panel connector may be used to help facilitate this feature.

Also note that the signals presented to this connector are generally connected directly to PASS logic
circuits. The signals are not protected from ESD or other electrical faults. For that reason, it is
recommended that any external signals that are connected to this connector be short (i.e. don’t connect
a 30 meter long cable from the external box to the PASS board…)

Pin 1 is the active input that corresponds to 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 ﬂoating, then ESTOP is inactive and the projector will be allowed to
operate normally.
Pin 3 is the active input that corresponds to a Manual Reset. This may be connected to pin 4
(ground) through a momentary pushbutton switch or a key-switch.
Pin 5 is an active input that indicates that a control panel is being used. Pin 5 must be connected
to Pin 6 when a control panel is used. If Pin 5 is not connected to Pin 6, then PASS will not wait for a
manual reset when power is ﬁrst applied.
Pins 7 and 8 p5V to the control panel. These may be used in conjunction with LEDs on the
control panel.
Pins 9 and 10 correspond to Ground. These may also be used in conjunction with LEDs on the
control panel.
Pin 11 is an output, which corresponds to the horizon detector within PASS. If this signal is LOW, it
indicates that the Y position is below the horizon (within the audience area). If this signal is HIGH
(approximately 4 volts), it indicates that the Y position is above the horizon. This signal may be
routed through a resistor to an LED or pair of LEDs (bi-color pair) to give an indication on the
control panel as to where the beam is within the Y space.
Pin 13 is an output, which corresponds to the velocity detector within PASS. If this signal is LOW, it

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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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