MICRO-SCREEN® with Muting
Contents
1. BAN NE Ee the machine safety specialist System Semi Annual Checkout Procedure for Latch and Trip Systems with Mute Function This checkout must be done by a Qualified Person who possesses all of the manufacturer provided information on the MICRO SCREEN System and guarded machine and who by possession of a recognized degree or certificate of professional training or who by extensive knowledge training or experience has successfully demonstrated the ability to solve problems relating to the installation operation and maintenance of optoelectronic machine guards A copy of the test results should be kept in the employer s files The Qualified Person must WARNING Do Not Use Machine Until System Is Working Properly 1 Examine the guarded machine to verify that it is of a type and design that is compatible with the MICRO SCREEN System MICRO SCREEN Systems MAY NOT BE USED with the following Any machine that cannot be stopped immediately after a stop signal is issued such as If all of the described checks cannot be single stroke also known as full revolution clutched machinery verified DO NOT USE the MICRO SCREEN System or the guarded machine until the defect or problem has been corrected Doing so could result in serious injury or death e Any machine with inadequate or inconsistent machine response time and stopping performance e Any machine that ejects materials or component parts through the light screen2. Fering Ekm dine ee sensor pairs sensor pairs WARNING Calculate the Separation Distance Carefully Failure to maintain appropriate separation distance can result in serious bodily injury or death NOTES 1 Although studies indicate speeds of 63 sec to over 100 sec consider all factors WARNING including the physical ability of the operator when determining the value of K ie g the phy y P 9 Shock Hazard 2 Tg is usually measured by a stop time measuring device If the specified machine A shock hazard exists while stop time is used add at least 20 as a safety factor to account for clutch brake the control box door is open system deterioration Before continuing verify that the door is closed and latched 3 Use of floating blanking always causes the required Dg to increase 4 Based on object sensitivity larger than 2 5 and may vary depending on the standard used such as ANSI RIA R15 06 1999 and EN999 Printed in USA 05 00 P N 62054 MICRO SCREEN with Muting page 2 Verify that access to any dangerous parts of the guarded machine is not possible from any direction not protected by the MICRO SCREEN System hard guarding or supplemental guarding and verify that all supplemental guarding devices and hard guarding are in place and operating properly Verify that it is not possible for a person to stand between the defined area and the dangerous parts of the guarded machine Or verify that supplemental safegua
3. cators ON Verify that it is not possible for an individual to trigger the mute devices block both photoelectric beams or actuate both switches to initiate a mute and then pass through the defined area without being detected and a subsequent stop command being issued to the machine Do not expose any individual to hazard while attempting to initiate a mute cycle Verify that it is not possible for personnel to pass in front of behind or next to the target object without being detected and without a stop command being issued to the machine If One Way directional Muting has been selected verify that a mute can not be initiated by blocking or activating terminals M3 and M4 before M1 and M2 page 3 MICRO SCREEN with Muting Semi Annual Checkout 14 If the Override feature is used Verify that the Light Screen controller is in RUN mode and the System has been reset Green and yellow Light Screen and System status indicators ON e FSDs closed See manual Figures 6 1 and 6 2 During this checkout procedure at all times ensure that personnel are not exposed to any hazard e Verify that the positioning of the Override switches allows the operator full view of the entire area being guarded by the safety light screen Verify that the location is not within reach from inside the safeguarded space With muting de activated interrupt the safety light screen with the test piece selected in step 5 and verify e Red Light Screen sta
4. e In any environment likely to adversely affect photoelectric sensing efficiency for example corrosive chemicals or fluids or unusually severe levels of smoke or dust Banner MICRO SCREEN Systems may not be used as tripping devices to initiate machine motion PSDI applications on mechanical power presses per OSHA regulation 29 CFR 1910 217 ot as ay WARNING 2 Verify that the minimum separation distance from the closest hazard point of the guarded 7 machine to the defined area is not less than the distance calculated by the following Hard Guarding formula If any object to be ignored by fixed blanking does not Ds Kx Ts Ty Dot completely prevent access to the danger point s install hard guarding to prevent where access past the object or increase the Ds the separation distance separation distance Openings in the hard guarding material must K 63 per second the OSHA recommended hand speed constant meet OSHA criteria see OSHA 1910 217 T the overall stop time from the application of the stop signal to the final ceasing of Table O 10 all motion including stop times of all relevant control elements measured at Failure to do so could lead to serious injury maximum machine velocity or death See Section 3 2 2 Ty 048 Seconds the response time of the MICRO SCREEN System Dot the added distance due to depth penetration factor OSHA 1910 217 and ANSI B11 standards 4 to 48 24 to 72 V Series
5. eceiver Figure 1 MICRO SCREEN trip test Banner Engineering Corp Minneapolis U S A www bannerengineering com Tel 763 544 3164 Semi Annual Checkout WARNING Reflective Surfaces A reflective surface a shiny machine surface or a shiny workpiece may reflect sensing light around an 8 object in the defined area preventing that object from being detected This potentially dangerous condition is discovered using the trip test 9 When this condition is discovered eliminate the problem reflection s e If possible relocate the sensors to move the defined area away from the reflective surface s being careful to retain at least the required separation distance 10 Otherwise paint mask or roughen the interfering shiny surface to reduce its reflectivity 11 Repeat the trip test to verify that these changes have eliminated the problem 12 reflection s If the workpiece is especially reflective and comes close to the defined area perform the trip test with the shiny 13 workpiece in place See Manual Section 3 2 4 Banner Engineering Corp Minneapolis U S A www bannerengineering com Tel 763 544 3164 MICRO SCREEN with Muting Test the Emergency Stop switch if one is connected to the system With the machine running engage the Emergency Stop switch to open its contacts Verify that the dangerous machine motion stops with no apparent delay Test each Emergency Stop switch indiv
6. ering com E mail sensors baneng com
7. idually when two or more switches are series connected to a MICRO SCREEN control module See Manual page 43 Remove electrical power to the MICRO SCREEN System Verify that All output relays immediately de energize and can not be reactivated until power is re applied and a System Key Reset is performed unless both Auto Power up features are ON Test the machine stopping response time using an instrument designed for that purpose to verify that it is the same or less than the overall system response time specified by the machine manufacturer NOTE Banner s Applications Engineering Department can recom mend a suitable instrument If any decrease in machine braking ability has occurred make the necessary clutch brake repairs readjust Ds appropriately and re perform this procedure If the separation distance has changed record the new distance on the daily checkout card p n 61076 Examine and test the machine primary control elements MPCEs to verify that they are functioning correctly and are not in need of maintenance or replacement Inspect the guarded machine to verify that there are no other mechanical or structural problems that would prevent the machine from stopping or assuming an otherwise safe condition when signalled to do so by the MICRO SCREEN System Inspect the machine controls and connections to the MICRO SCREEN System Verify that no modifications have been made which adversely affect the system If the Mu
8. rding per ANSI B11 safety requirements or other appropriate standards is in place and functioning properly in any space between the defined area and any danger point large enough to allow a person to stand undetected by the MICRO SCREEN System Examine the electrical wiring connections between the MICRO SCREEN output relays and the guarded machine s control elements to verify the requirements stated in Section 3 5 13 of the manual Test the effectiveness of the MICRO SCREEN System with system power ON Select the proper test piece based on system configuration per the following chart Floating Standard Series V Series Blanking Program Emitters and Receivers Emitters and Receivers STP 2 19 1 mm 0 75 dia STP 4 31 8 mm 1 25 dia team STP 4 31 8 mm 1 25 dia STP 5 57 5 mm 2 25 dia team STP 3 44 5 mm 1 75 dia STP 9 82 6 mm 3 25 dia a Verify that the MICRO SCREEN System is in RUN mode e Green and yellow Light Screen and System status indicators ON e The green Light Screen indicator will flash if blanking is programmed Ensure muting is not enabled See user s manual Section 5 1 for Key Reset procedure b With the guarded machine at rest slowly pass the test piece downward through the defined area at three points perpendicular to the defined area close to the receiver close to the emitter and midway between them Verify that while the test piece is within the defined area e The red Light Screen s
9. tatus indicator comes ON and remains ON e The green System status indicator is OFF Remove the test piece from the defined area and verify e The green Light Screen status indicator comes ON If the green Light Screen indicator comes ON at any time when the test piece is within the defined area check for reflective surfaces or unguarded areas created by use of fixed blanking see Warnings Do not continue until the situation is corrected See Manual Sections 3 2 2 and 3 2 4 Perform a System Key Reset to reset the latch after each pass of the test piece on latch models c Ensure that muting is not enabled and initiate machine motion of the guarded machine While the machine is moving insert the test piece into the defined area perpendicular to it Do not attempt to insert the test piece into the dangerous parts of the machine As the test piece enters the defined area at any time during machine motion the dangerous parts of the machine should come to a stop with no apparent delay Remove the test piece from the defined area and perform a System Key Reset Verify that e The machine does not automatically restart and e The initiation devices must be engaged to restart the machine d With the guarded machine at rest insert the test piece into the defined area and verify that e The guarded machine cannot be put into motion while the test piece is within the defined area Semi Annual Checkout Ss Specified Test Piece R
10. ting feature is used Ensure that the MICRO SCREEN Light Screen and System have been reset and the green and yellow Light Screen and System status indicators are ON If the yellow System status indicator is double flashing indicating a latched condition perform a System Key Reset At any time if one or both red status indicators begin to flash an internal lockout condition exists Refer to manual Section 5 1 to determine the cause of the lockout During this checkout procedure at all times ensure that personnel are not exposed to any hazard Initiate a normal mute cycle Verify e Mute indicator comes ON If not check the indicator and its wiring verify that the mute enable input is closed and check the System Diagnostic Display for error codes Interrupt the safety light screen with the test piece selected in step 6 Verify e Red Light Screen status indicator comes ON e Green Light Screen indicator OFF e Yellow Light Screen indicator Hashing or OFF e Green and yellow System status indicators ON NOTE If the 30 second or 60 second Backdoor Timer feature is selected the System Diagnostic Display will begin to count down otherwise a flashing dash will appear on the display Clear the safety light screen before the Backdoor Timer expires and verify e Green and yellow Light Screen status indicators ON Clear or deactivate the mute devices and verify e Mute indicator OFF e Green and yellow System status indi
11. tus indicator comes ON e Green Light Screen indicator OFF e Yellow Light Screen indicator Flashing Green System status indicator OFF e Yellow System status indicator ON Three seconds after interrupting the light screen initiate an override cycle turn both Override switches to ON simultaneously hold in the ON position if necessary While the light screen is interrupted verify Both red status indicators ON e Yellow Light Screen indicator Flashing rate proportional to number of clear beams e Green System status indicator ON FSDs closed Verify that the Override drops out after 10 seconds To initiate another override cycle return switches to the OFF open condition wait 3 seconds and then simultaneously re close the Override switches Remove all obstructions from the light screen and perform a System Key Reset on latching models Verify e Green and yellow System status indicators ON FSDs closed If one or both red status indicator s begins to flash when the system goes into RUN mode an internal lockout condition exists Refer to Section 5 1 of the manual to determine the cause of the lockout If all checks cannot be verified shut machine down and do not use until the problem s has been corrected Refer to user s manual Section 5 WARN NE Ee the machine safety specialist Banner Engineering Corp 9714 Tenth Ave No Minneapolis MN 55441 Phone 763 544 3164 e www bannerengine
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