User manual OMRON MS2800E

[. . . ] F03E-EN-01 MS2800E Safety Light Curtain Type 2 OPERATION MANUAL MS2800E Safety Light Curtain Type 2 Installation and Operating Manual January 2008 Omron Europe B. V. Wegalaan 67-69 NL-2132 JD, Hoofddorp Pays-Bas Tel. : +31 (0) 23 568 13 00 Fax: +31 (0) 23 568 13 88 www. industrial. omron. eu iv Notice: OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual. The following conventions are used to indicate and classify precautions in this manual. Always heed the information provided with them. [. . . ] One channel can be obstructed at any location in the detection zone as long as the optical synchronization is maintained. Please refer to chapter 5-4 Optical Synchronization for further details. This means that an object can freely float from one end of the protective field to the other without the MS2800 system entering the MACHINE STOP state. The obstructed channels are not fixed at a single location but "float" through the detection zone. Floating Blanking Inactive Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 System Response 1 Exception MACHINE STOP 0 Exceptions Machine Run 2 2 1 Exceptions Exceptions Exception MACHINE STOP MACHINE STOP Machine Run Optical Channel is obstructed 1 1 1 1 Channel Channel Channel Channel Floating Floating Floating Floating Blanking Active Blanking Active Blanking Active Blanking Active Clear Optical Channel 5-2-1 Selecting Floating Blanking with selector switches Using the selector switches an authorized user can activate the Floating Blanking function. This allows the system to operate with one obstructed optical beam anywhere within the protected zone. This obstruction is permitted anywhere within the protected zone and is permitted to move over time. After setting the appropriate selector switches, the receiver enters the Power-On Self Test state and if no faults are detected the receiver shall enter the INTERLOCK or MACHINE RUN condition depending upon the selected operating mode. !WARNING Two-Beam Floating Blanking is not available on the MS2800 system. Floating Blanking Effects on Minimum Object Resolution Standard Minimum Object Resolution Minimum Object Resolution with (No Floating Blanking) 1 Beam Blanking 14 mm 24 mm 30 mm 50 mm 13 Fixed Blanking with Floating Blanking Section 5-3 5-3 Fixed Blanking with Floating Blanking !WARNING Use of Fixed Blanking and Floating Blanking will make MS2800 system less sensitive to objects in the detection zone. Improper use of these features can result in severe injury to personnel. Fixed Blanking may require a hard barrier guard. Fixed Blanking and Floating Blanking may require an increase in the safety distance. Possible combinations: Function Fixed Blanking Floating Blanking Fixed Blanking N/A Yes Floating Blanking Yes N/A When both Fixed Blanking and Floating Blanking are selected, the floating channels are allowed to occur anywhere within the detection zone except the area selected by Fixed Blanking. 5-3-1 The effect of Fixed or Floating Blanking on minimum object resolution When fixed Blanking and/or Floating are active, the safe mounting distance is affected. Fixed and Floating Blanking desensitize the light curtain and increase the size of the minimum detectable object. The increase is equal to the beam spacing distance for each beam that is disabled. If the size of the object detected by the system increases the minimum safe distance must also be increased. Use the minimum object sensitivity given in the following tables to determine the new figure to use when computing the safety distance. MS2800 system - 14 mm resolution Total number of Beams Disabled by Fixed and/or Floating Blanking None 1 Beam 2 Beams 3 Beams 4 Beams 5 Beams Effective Resolution 14 mm 24 mm 34 mm 44 mm 54 mm 64 mm > 64 mm MS2800 system - 30 mm resolution Total number of Beams Disabled by Fixed and/or Floating Blanking None 1 Beam Effective Resolution 30 mm 50 mm > 64mm 14 Optical Synchronization Section 5-4 5-4 Optical Synchronization The synchronization between the MS2800 system transmitter and receiver is optical, so the system does not use one specific beam. To establish synchronization the system needs to have a certain number of consecutive clear beams (see following table) within the first master segment. If they are not satisfied, the system will enter a MACHINE STOP state and every other Individual Beam Indicator will light. When the beams are cleared, the system will resynchronize itself and enter a state consistent with its operating mode. Once the synchronization is established, it can be maintained as long as the required number of consecutive clear beams can be satisfied anywhere in the system (including flex segments). Light Curtain Beam Count 12 - 16 beams 17 - 32 beams 33 - 64 beams 65 - 128 beams 129 - 256 beams Synchronization Beam Requirement 6 consecutive clear beams 7 consecutive clear beams 8 consecutive clear beams 9 consecutive clear beams 10 consecutive clear beams Because of these restrictions, when programming a fixed blanking object(s), the size of the fixed or monitored blanking object(s) must comply with the number of consecutive clear beams stated in the previous table within the first master segment. In addition to that, any fixed or monitored blanking programming must be done with at least one (1) clear beam on each flex segment. 15 Optical Synchronization Section 5-4 16 SECTION 6 Diagnostic and Test Features 6-1 Individual Sector Indicators (ISI) All MS2800 systems have two visible, red LEDs on the receiver close to the lowest and the uppermost beam for easy alignment of the devices. Every LED represents one half of the protected area. [. . . ] To test the MS2800 system, use the correct size test object. Machine identification_____________________________ Date___________ Item Disable the guarded machine. Condition Comments @ Pass @ Fail Visually inspect the machine to ensure that access to @ Pass the danger point is only through the MS2800 detec@ Fail tion zone. If not, additional guarding, including mechanical barriers ma be required. [. . . ]