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ASTECH LDS30 Manual

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LDS30
Version 2.0

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Summary of Contents for ASTECH LDS30

  • Page 1 Manual LDS30 Version 2.0...
  • Page 2 Dear User, You are advised to carefully read this User Manual before turning on the Laser Distance Sensor LDS30 for the first time. This is necessary to ensure that you will be able to use all the capabilities and features provided by your new purchase.

  • Page 3: Table Of Contents

    LDS30 Manual Content Content General Information .................. 8 Safety advice ....................9 Basic safety advice ................9 Safety advice for Laser Class 1 ............10 Advice for operating device ............10 Norms ....................11 Disposal ................... 12 Operating conditions ................13 Electrical installation conditions .............
  • Page 4 Content LDS30 Manual Firmware update ................52 Repair ....................52 Malfunction and error messages ............. 53 Accessories (Options) ................54 10.1 RS-232 cable for LDS30A/RS-232 ............ 54 10.2 Connection box TCBS30A ..............54 10.3 Adjustment bracket JW51x ............. 55 10.4 Software LDMTool from version 4.8 ..........
  • Page 5 Figure 5 : RS-232 Interface of LDS30A .............. 24 Figure 6 : RS-422 Interface of LDS30A .............. 25 Figure 7 : Digital switching output Q1 and Q2 LDS30 ........26 Figure 8 : Switching behavior of digital outputs ..........27 Figure 9 : Signal diagram of LDS30 analog output ...........
  • Page 6 Table 13 : Error codes ..................53 Table 14 : Pin assignment of programming cable PC sided ......54 Table 15 : Pin assignment of programming cable LDS30 sided ......54 Table 16 : Part numbers ................... 56 Page 6...
  • Page 7 LDS30 Manual Used Symbols Sign warns against emitting visible and invisible laser radiation. Sign warns against danger of electrical power and of electric shock. Sign warns against danger. Sign shows information for use in hazardous environments. Sign indicates important information regarding device use of the device.

  • Page 8: General Information

     Particularly suitable for use in scanners The LDS30 sensor operates on the basis of time of flight measurement. Short laser pulses are transmitted. The light pulse reflected from the target is detected by the receiver. The distance can be determined by the time shift.

  • Page 9: Safety Advice

    Please read the safety and operating advice carefully, and observe the advice when operating the device. Danger of Laser radiation Do not open the LDS30, otherwise Laser radiation can be emitted that can cause eye injuries. Please observe all information and guidelines for operating the Laser.

  • Page 10: Safety Advice For Laser Class 1

    Safety advice LDS30 Manual The device LDS30 operates with low voltage of DC 10 to 30 volts. Protection degree: In accordance with the Protection Degree IP67, the LDS30A is protected against jet water and dust, and against short submersion into water.

  • Page 11: Norms

    LDS30 Manual Safety advice The device must be protected against overheating. The device will not be switched off automatically when operating temperatures are exceeded. The persisting overheating of the device will lead to a reduced lifetime of the laser diode.

  • Page 12: Disposal

    Safety advice LDS30 Manual IEC 61326-1:2006 Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General requirements (IEC 61326-1:2006); German version EN 61326-1:2007 IEC 60825-1:2007 Safety of Laser products – Part 1: equipment classification and requirements...

  • Page 13: Operating Conditions

    LDS30 Manual Operating conditions Operating conditions Electrical installation conditions For the operation of LDS30A use only a DC voltage of 10 V ... 30 V. The limit values for the input voltage have to be observed. Do not wire inputs as outputs.

  • Page 14: Improperly Use - Error Sources

    Operating conditions LDS30 Manual  Operation with correct supply voltage,  Compliance with environmental conditions, the operating and storage temperature,  Protection of windows against fogging and soiling,  Using data lines with specified signal levels,  Observing of guidelines in this manual.
  • Page 15 LDS30 Manual Operating conditions The operating temperatures have to be observed. The overheating of the device has to be avoided in any case. When the operating temperatures are exceeded, the device is not switched off automatically. Persisting overheating of the device leads to a reduced lifetime of the laser diode.

  • Page 16: Device Description

    Device description LDS30 Manual Device description General device description The Laser distance measurement device LDS30 is made for distance measurement onto static and moving objects with a precision down to the centimeter:  Measurement within 0.2 m ... 30 m onto natural surfaces with reflectance >...

  • Page 17: Technical Data

    LDS30 Manual Device description Technical Data Table 2 : Technical data Measurement properties Measurement principle Laser pulse - Time of flight measurement Measurement range onto target board 0.2 m ... 250 m for target reflectance >10 % 0.2 m ... 30 m ...
  • Page 18 Device description LDS30 Manual Data LDS30A (IP 67 Device) Serial interface RS-232 or RS-422 9600 … 921600 Baud, 8N1, ASCII Analogue output 4 … 20 mA Load resistance  500  Switching output 2x “High-Side-switch“, load up to 0.2 A Supply voltage 10 VDC …...

  • Page 19: Mechanical Integration Requirements

    LDS30 Manual Device description Mechanical integration requirements The LDS30A can be fixed with 2 screws M4x50 (screw length according counterpart). The mounting screws are not included. Figure 1 : Installation and mounting LDS30A (in mm) ASTECH GmbH Page 19...

  • Page 20: Figure 2 : Installation And Mounting Lds30M (In Mm)

    Device description LDS30 Manual The module LDS30M has to be fastened with 4 screws M2.5. The screw length is determined by the counterpart. Figure 2 : Installation and mounting LDS30M (in mm) Avoid any tension to the PCB caused by module fixing.

  • Page 21: Dimensions Of Laser Spot

    LDS30 Manual Device description Dimensions of laser spot If the LDS30A will be mounted so that the laser diode is located vertically above the receiver APD (cover with laser warning label above), the laser spot at the target has the following sizes:...

  • Page 22: Table 5 : Pin Assignment Connector Lds30M

    Device description LDS30 Manual The cable shield has to be connected to (Pin 2, blue). Power connected internally Power Signal Open and unused cable leads must be insulated. For cable extension only high quality shielded cables has to be used.

  • Page 23: Figure 4 : Connector Lds30M

    LDS30 Manual Device description There is no internal reverse polarity protection! Power supply of DC 6.5V ... 7.0 V has to be observed! Figure 4 : Connector LDS30M The type of the counterpart for the LDS30M connector is: Molex PicoBlade™ Conncetor System Part-No. 51021-1400...

  • Page 24: Interface Description

    The RS-232 serial interface can be used for data transfer and configuration of the LDS30. The cable length is limited to 15 m. The cable length has to be shorter at baud rates of 115200 or higher. For these baud rates, we recommend only the use of the RS-422 model and the connection with 2 twisted pairs with shield.

  • Page 25: Serial Interface Rs-422

    The RS-422 serial interface can be used for data transfer and configuration of the LDS30 like the RS-232. Cable length depends on the baud rate and the line quality; up to 300 m length is possible. Use only high-quality cable with 2 twisted pairs and shielding.

  • Page 26: Q1/Q2 - Digital Switching Output

    Accordingly, they are perfectly suited for direct processing of monitored quantities such as filling level or for object detection. Parameter settings are made via serial interface. Figure 7 : Digital switching output Q1 and Q2 LDS30 A load resistance >150 Ohms must be connected to GND at the Power switch output (max.

  • Page 27: Figure 8 : Switching Behavior Of Digital Outputs

    LDS30 Manual Interface description Name Description Range Switching -9999,999 threshold +9999,999 Switching range x ≥ 0; x ≥ y Hysteresis y ≥ 0 Switching level z = 0 or 1 Q resp. /Q Figure 8 : Switching behavior of digital outputs LOW = 0 U <...

  • Page 28: Qa - Analog Output

    Lower Limit x ≠ y UpperLimit y ≠ x Figure 9 : Signal diagram of LDS30 analog output The value of output current (mA) is calculated as follows: ��������.−�� ���� [ ���� ] = 4 ���� + 16 ∗ ∗ ����...

  • Page 29: Figure 11 : Wiring Analog Output Qa Of Lds30A

    LDS30 Manual Interface description Figure 11 : Wiring analog output QA of LDS30A For current-to-voltage conversion a load resistance ≤ 500 Ohm between output QA and GND is necessary. Normally, a Signal measuring resistor of 100 ohms / 0.01 % / 0.5 W is used.

  • Page 30: Start-Up Lds30A

    Table 6 : Start-up LDS30A Work step Unpack the LDS30 and check for damages. Mount LDS30A with 4 x M4 threaded holes or with two holes of 4.5 mm (see 4.3). Plug-in interface cable only if there is no voltage impressed; bolt the cable tightly.

  • Page 31: Figure 12 : Program Ldmtool

    LDS30 Manual Start-up LDS30A Before switching on the power supply make sure that all cable ends are protected against short circuits! Connect cable terminals as required for the particular operating mode. To prevent short circuits, seal unused cable ends! For starting-up, a PC with RS-232 or RS-422 data interface and a terminal program are required.

  • Page 32: Description Of Commands

    Description of commands LDS30 Manual Description of commands Overview of commands Table 7 : Overview of commands Command- Command Description Standard(s) Range(s) Class Operation Single distance measurement Mode Distance tracking Fast distance tracking Status Device temperature in °C Display of all parameters...
  • Page 33 LDS30 Manual Description of commands Command- Command Description Standard(s) Range(s) Class Error output outside of MW 0 = enabled, 1 = disabled Distance offset 0.000 ± float 32 Single distance measurement and set as distance offset Error mode for Q1, Q2 and QA 0 ...

  • Page 34: Transmission Protocol Rs-232 And Rs-422

    Description of commands LDS30 Manual Transmission protocol RS-232 and RS-422  Interface settings: asynchronous, 8 data bits, no parity, 1 stop bit  Transmission protocol format/syntax: 7-bit-ASCII  Proprietary communication protocol  Commands are case-insensitive (No distinction between lower and upper case) ...

  • Page 35: Operating Modes

    Operating modes DM – Individual distance measurement The LDS30 carries out exactly one measurement and waits for new commands. The duration of the measurement depends on the number of the set measuring values SA and the preset measuring frequency MF.

  • Page 36: Figure 13 : Maximum Output Rate At Mf = 15.000

    Description of commands LDS30 Manual Figure 13 : Maximum output rate at MF = 15.000 FT – Fast Distance Tracking In fast distance tracking mode measurements are performed at a frequency of 30 kHz. Measured data can be output in binary format only. The baud rate has to be set to 921600 baud! Caution: Some computer cannot handle baud rates >115200.

  • Page 37: Figure 14 : Binary Data Output In Mode Ft

    LDS30 Manual Description of commands The following parameters are fixed in the FT mode: Measurement frequency: MF 30000 Hz Average values SA 1 Output format SD binary (distance value, 2 bytes) The manually set parameter MF / SA / SE / QA / Q1 / Q2 / SD / TE not will be used.

  • Page 38: Identification Commands

    The LDS 30 responds to the command ID by showing its manufacturing data, like type, firmware version, etc. Example: LDS30 1.4.0 01.02.2012 12:00 SN 110001 10.01.2012 14:33 (Type, firmware version, or other - information may vary) ID? — Online help By entering the command ID? the user will obtain an overview of all available operations and parameters described in the following sections.

  • Page 39: Status Commands

    LDS30 Manual Description of commands Status commands TP – internal temperature The LDS30 outputs its internal devices temperature via serial interface. The temperature unit is degree Celsius (° C). Example: TP 044.1 The internal device temperature does not correspond to the specified operating temperature! The ambient temperature (operating temperature) has to be kept.

  • Page 40: Figure 17 : Data Output Of Command Hw

    Description of commands LDS30 Manual Item Meaning Error Code Error message Temp extern Temperature in electronic environment Temp intern Temperature controller board, internal Ref intern Reference voltage controller, internal Clock Ratio Crystal generators, control reference number Example: Error code ..

  • Page 41: Command For Parameter Setup

    (0x20). AS – Auto start function The auto start function defines the behavior of the LDS30 after a cold start. After the start, the LDS30 carries out the set commands automatically and sends the data via the serial interface.

  • Page 42: Figure 18 : Reset To Factory Settings By Command Pr

    Description of commands LDS30 Manual Setting a very high baud rate implies a risk. Some computers cannot support baud rates >115200. If the baud rate is set by command BR460800, communication is no longer possible without a compatible interface, i.e. the baud rate...
  • Page 43 Description of commands DR – Release of cold start DR carries out a cold start of the LDS30 and actually simulates an interruption of the supply voltage. This command is useful for a test if “Autostart”- command was changed for example.
  • Page 44 Description of commands LDS30 Manual Range of parameter x: 0.0 … 15000; Resolution: 1 Standard: 15000 For example: MF10000 means that 10.000 single measurement pulses per second are sent. The measuring time and the transmission of the measurement result via a serial interface also depend on the parameter SA...

  • Page 45: Table 8 : Scattering Of Distance Measurement

    LDS30 Manual Description of commands Query: Set: Range of Parameter 1 … 30000; resolution: 1 Standard: 1500 The dispersion of the measured values can be reduced by calculating the mean value: �� �� ���� √ ���� The following applies: σ...

  • Page 46: Table 9 : Error Mode Sex, Meaning Of Parameter X

    Description of commands LDS30 Manual parameter x: Standard: Table 9 : Error Mode SEx, meaning of parameter x Q1, Q2 (z=0) Q1, Q2 (z=1) Last value Last value Last value High 3 mA High 21 mA There is no plausibility check of the preset error mode. The user itself is responsible for correct parameter setting! Q1/Q2 –...
  • Page 47 LDS30 Manual Description of commands Query: Set: Range x: 0, 1, 2, 3 Standard: The best setting for most applications is receiver gain step 0. Advantages of GN > 0: Measurements on bad reflecting surfaces are possible Disadvantages of GN >0: More disturbances lead to decreased accuracy QA –...

  • Page 48: Table 10 : Serial Output Format Sdy, Meaning Of Parameter Y

    Description of commands LDS30 Manual SD – Output format serial interface SD sets the format x and content y of the output string of the serial interface for distance and speed measurements. The format can be decimal (ASCII), hexadecimal (ASCII) or binary.
  • Page 49 LDS30 Manual Description of commands The output format and the baud rate determine the maximum output rate of the measured values. If the measuring frequency becomes too high, results of some measurements will not be outputted. Explanation binary output format...

  • Page 50: Figure 19 : Binary Data Output At Sd2 3

    Description of commands LDS30 Manual Binary Structure: Byte 0 Temperature Data Example: Distance 0 0 0 0 0 1 0 1 0 1 0 0 1 0 :100 = 3,38m Signal *2 = Temperature -40 = 53*C Figure 19 : Binary data output at SD2 3 UB –...

  • Page 51: Table 11 : Termination Character(S) Tex, Meaning Of Parameter X

    LDS30 Manual Description of commands Query: Set: TEnn Range of parameter x: 0 … 9; (Table 11) Standard: Table 11 : Termination character(s) TEx, meaning of parameter x Hexcode 0x0D 0x0D 0x0A 0x02 0x03 0x09 0x20 0x2C 0x3A 0x3B 0x0A...

  • Page 52: Maintenance

     Do not loose any screws of the device. Firmware update Firmware updates of the sensor electronics of the LDS30 may only be done by the manufacturer. Repair In case of necessary repair, send the device to your dealer or to the manufacturer.

  • Page 53: Malfunction And Error Messages

    Action for removal No data via Faulty interface Check interface RS-232 or RS-422 configuration configuration Device error (Ext. Hardware problems Send LDS30 for repair, Diagnosis) Contact technical support Table 13 : Error codes Code Cause Action for removal DE02 No target...

  • Page 54: Accessories (Options)

    RS-232 cable for LDS30A/RS-232 For parameter setting an optional programming cable is available to link the LDS30 with a PC (COM port, RS-232). The use of the PC software LDMTool is recommended. Table 14 : Pin assignment of programming cable PC sided...

  • Page 55: Adjustment Bracket Jw51X

    LDS30 Manual Accessories (Options) 10.3 Adjustment bracket JW51x The adjustment bracket enables the alignment of the device to the target. It allows a rotation of ±5° in two axes. 10.4 Software LDMTool from version 4.8 A demo version of the software LDMTool is included in the delivery. By purchasing a license number, the software becomes a full-version.

  • Page 56: Part Numbers

    12-2010-00 Reflective foil matt white, A4 12-2011-00 Highly reflective foil silver, A4 11-0006-00 ASTECH USB Stick (Documentation and Software) 17-2000-00 License number for PC Software LDMTool Note: Several sensors are available as packages including sensor, cable, manual and software (Set).

  • Page 57: Eg Declaration Of Conformity

    (IEC 61326-1:2005); German Version EN 61326-1:2006 IEC 60825-1:2007 Safety of Laser products - Part 1: Equipment classification and requirements (IEC 60825-1:2007); German Version EN 60825-1:2007; Laser Class 1 Rostock, 5. August 2014 ASTECH Angewandte Sensortechnik GmbH Jens Mirow Managing Director ASTECH GmbH Page 57...
  • Page 58 Notice LDS30 Manual Page 58 ASTECH GmbH...
  • Page 59 LDS30 Manual Notice ASTECH GmbH Page 59...

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