Product Information 08/2004 Installation and connection of 2 to 4 MOBY D antennas to an SLG D10/D10S read/write unit ANT D5 ANT D6 SLG D10/D10S Basic unit Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 ANT D10 1 1 Antenna configurations The antenna installations described here are designed for reading Smart Labels (transponders) on goods riding on conveyors, conveyor systems or pallets. There must be no large magnetically conductive substances (e.g. metals) in the vicinity of the antenna or label. The minimum distances to the individual components are specified in the MOBY D manual for project planning, assembly and servicing. Installation with 2 antennas (gate) Wide-range power pack ANT D5* ANT D6 ANT D10 Basic unit SLG D10 SLG D10S PC (RS 232) SIMATIC S7 (RS 422) PROFIBUS ASM 4xx Antenna duplexer ANT D5* ANT D6 ANT D10 Antenna cable 3.3 m Installation with 3 antennas (C-configuration) ANT D5* ANT D6 ANT D10 Antenna duplexer ANT D5* ANT D6 ANT D10 Antenna duplexer ANT D5* ANT D6 ANT D10 Installation with 4 antennas (tunnel) ANT D5* ANT D6 ANT D10 Antenna duplexer ANT D5* ANT D6 ANT D10 Antenna duplexer ANT D5* ANT D6 ANT D10 Antenna duplexer ANT D5* ANT D6 ANT D10 * The antenna cable is not detachable on ANT D5 Figure 1 2 Configurations of SLG D10/D10S with ANT D5/D6/D10 Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 ANT D6 ANT D6 Figure 2 Conveyor (roller conveyor) Example installation with ANT D6 (C-configuration) ANT D6 ANT D6 Figure 3 Conveyor (roller conveyor) Example installation with ANT D6 (tunnel) Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 3 1.1 Information for project planning The antenna installation described below is suitable for detecting labels that move horizontally through the installation. Depending on how the antennas are installed (either directly across from each other or offset in parallel), the labels either must be oriented parallel to the antennas or can have any orientation. The size of the detection range depends on the label orientation. Attention Note that the overall detection range of the antenna is larger than the configured detection range. Thus, certain label orientations make it possible to detect labels outside of the detection range. For example, labels that are parallel to the antennas can be detected at large distances next to or beyond the antennas. For this reason, goods should not be stored outside of the detection range within 0.5 m of the installation. If this distance cannot be maintained, the antennas must be shielded. The following points must be noted to ensure three-dimensional detection of labels within the detection range: S The gate width should be less than or equal to 800 mm. S The labels should be no smaller than an ISO card (46 mm x 75 mm). S The distance from label to label should be greater than 100 mm. The distance from label to label can be reduced by narrowing the gate width accordingly. In particular, this applies to distances below 50 mm. S There should be no more than 16 labels within the antenna detection range at any one time. The number of labels can be increased by narrowing the gate width and adjusting the maximum speed accordingly. S The maximum label speed should not exceed 1 m/s. (This value is a function of the number of labels, label orientation, the number of data blocks, the data report required and the label type). S Any metal parts should be at least 150 mm from the sides and front of the antenna. S The read/write unit should not be subject to interference from other electrical devices in the area. The difference between noise levels should be less than 20 mV. Note The SLG D10S does not have multitag capability. 4 Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 1.2 Required components The following components are required for installation with S 2 antennas (gate) S 3 antennas (C-configuration) S 4 antennas (tunnel) Table 1 Required components No. for installation with... 2 antennas 3 antennas 4 antennas 1 1 1 Component Basic unit: SLG D10 ( PC) SLG D10S ( ASM 4xx) Order no. SLG D10: SLG D10S: Options: ASM 452: ASM 473: ASM 475: 6GT2 002-0EB20 6GT2 002-0HA10 6GT2 002-0GA10 2 3 4 ANT D5 / D6 / D10 antenna 2 3 4 Available with ANT D5 if required: Distance kit for ANT D5 6GT2 690-0AB00 2 3 4 Available with ANT D6 if required: Cover 6GT2 698-5AD00 1 2 3 Antenna duplexer 6GT2 603-0AC00 1 1 1 MOBY wide-range power pack 6GT2 494-0AA00 1 2 3 Antenna cable, 3.3 m in length 6GT2 691-0CH33 - - - If required: Extension cable, 7.2 m in length 6GT2 691-0DH72 1 1 1 24 V connector cable, 5 m in length 1 1 1 Connector cable: SLG D10 PC or SLG D10S ASM 4xx 1 1 Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 1 If required: Packaging unit consisting of aluminum sections with assembly materials Options: ANT D5: ANT D6: ANT D10: 6GT2 698-1AA00 6GT2 698-2AA00 6GT2 698-5AA00 6GT2 698-5AB00 6GT2 698-5AF00 6GT2 491-1HH50 6GT2 691-0B... Options: 6GT2 491-0E... 6GT2 491-1C... 6GT2 690-0AF00 5 Installation instructions Each of the cables on the antennas and antenna duplexer is 3.3 m in length. Therefore, the read/write unit must be mounted near the antennas. If there is a large distance between the read/write unit and the antennas, the antenna cable can be lengthened by 7.2 m using the extension cable (6GT2 691-0DH72). However, this leads to slight output losses. 1.3 Metal-free area To ensure that the various installation variants operate correctly, any large metal parts in the vicinity of the antennas must be removed. 100 100 100 100 Figure 4 Metal-free area, side view (the example shows a tunnel configuration at a conveyor) 100 100 Max. 800 Antenna beneath the belt Figure 5 6 Metal-free area, top view (the example shows a tunnel configuration at a conveyor) Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 If metal parts in the vicinity of the antenna cannot be avoided, note the following: 1.4 S A minimum distance of 100 mm should be maintained between the antenna and metal parts in all directions. At 50 mm and beyond, the read range will be greatly impaired. At distances to metal of 150 mm and beyond, there are on measurable losses. S The degree to which metal parts will have an effect is greatly dependent on their size and shape. Thin metal poles have less influence on magnetic field lines than do large surfaces. S Large metal surfaces (edge lengths > 50 mm) that are parallel to the antennas or labels will cause the magnetic field lines to short circuit. This will make it impossible to read the labels. S Any metal parts beneath the conveyor will alter the path of the magnetic field lines. This will greatly impair the read range. It will be impossible to read labels with a horizontal orientation. S Metal parts should not form closed loops or electrical circuits. If necessary, they should be disconnected at a suitable location. S Any metal parts in the immediate vicinity of the antenna must be grounded with a good HF connection using a star ground circuit. S Because the read/write unit is installed in a metal housing and the antennas can be coupled to the cables of the read/write unit, the unit should be mounted at least 500 mm from the antennas. Information on mounting and laying the antenna cables To suppress interference, an EMC snap ferrite must be installed on each antenna cable (including on the antenna cable between the SLG and the antenna duplexer). The coaxial cable must be passed through the EMC core at last four times in tightfitting loops. The distance between the ring core and the connector to the read/ write unit or antenna duplexer should not exceed 100 mm. The antenna cable should always be vertical when leading away from the antennas. The cable should be laid at least 200 mm from the antennas. There will otherwise be a loss in output. All antenna cables must be laid at least 300 mm from parallel live cables. Unused cable length must be wound into a coil of = 100 to 150 mm. If the standard antenna cable is too short, it can be lengthened by 7.20 m using the extension cable. This will lead to slight losses in range. To achieve the best possible read ranges, the antenna cable should not be shortened or extended. Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 7 2 Installation startup and testing performed by trained personnel After the antennas are mounted and balanced, the system can be checked to ensure it is functioning properly using a read/write unit, the MOBY D SET service software, a PC with the MS Windows operating system and a Smart Label. 2.1 Reading out a serial number Table 2 Step Reading out a serial number Procedure Remark 1 Attach a label to one of the antennas. This can be done using adhesive tape. 2 Select the Configuration button. 3 Set the label type in the CFG3 configu- 1. Set the label type ration block. (via Configuration CFG3: RF Interface I) 2. Save the setting 8 4 Set the transponder parameters in the CFG8 configuration fi ti block. bl k 5 Configure all transponders being used in the required mode (example for ISO transponder). 6 Select the Test and Measurements menu. 7 Select the ISO Inventory function. (via Configuration CFG8: General) Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 Table 2 Reading out a serial number Step 2.2 Procedure 8 Start the function using the Start button. 9 The serial number and label type are displayed in the output window. Remark Checking the noise level Table 3 Checking the noise level Step Procedure 1 Select the Test and Measurements menu. 2 Select the Noise Levels function. 3 Start the function using the Start button. 4 Target values: Remark Average: 500 to 700 mV Vmax - Vmin < 20 mV If the target values have not been met, check the following: S Are all cables well connected and do they make good contact? S Have the ring cores been installed on the antenna cables? S Were the cables laid as required? S Have other RF identification systems been installed nearby? S Are there any large metal parts near the antenna? S Are there any devices nearby that may emit interference (large machines or radio equipment)? To determine which devices may interfere with the operation of a gate, disconnect them briefly from the mains. Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618 9 2.3 Testing the performance To test performance, start the ISO Inventory command in the MOBY D SET program. If labels are parallel to the antenna, a continuous read field will be present between the two antennas. This should be tested for all antenna pairs. All labels with this orientation are read when they move horizontally through the antenna field. If opposite antennas are offset from each other and labels are perpendicular to the antennas, the label should be detected when moving in the direction of passage through the system. The length of this detection range equals roughly half the antenna width (depends on antenna type). The following errors may occur: 3 S Antenna is incorrectly mounted (orientation, distance between antennas, cabling) S Any metal nearby will detune the antennas or cause interfere S Noise level too high (Vmax - Vmin 20 mV) due to external interference (e. g. from monitors, motors, converters) S Label is detuned (due to metal) or defective S Read/write unit is incorrectly configured (transmitting power, transponder type, modulation, transponder parameters, etc.) S A cable is defective or is making poor contact S Read/write unit, antenna range or antenna is defective Technical support Specialists are available at the technical support center to advise and support you if you have any questions regarding the functionality and operation of our MOBY products. You can reach us from anywhere in the world at any time of day at: Telephone: Fax: E-Mail: 10 +49 (0) 180 5050-222 +49 (0) 180 5050-223 adsupport@siemens.com Copyright 2004 by Siemens AG J31069-D0158-U001-A0-7618