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Site Considerations

DYACON LD-1 Manual

7.0  Site Considerations

 7.1 Electromagnetic Environmental

LD-1 is essentially a specialized radio receiver, designed to receive broadband noise and 
evaluate it for a probable match to characteristic shapes and energy patterns of lightning. Other 
equipment may interfere with the desired signals and cause a desensitization of LD-1 detection 
capabilities or result in false detections.

Equipment that intentionally or unintentionally creates an electrical arc, such as switches, 
motors, and welders may interfere with LD-1.

Digital computer equipment, smart phones, and some light fixtures emit broadband noise that 
can detected by LD-1.

The effect these noise sources can be seen by the Noise Count value. Adjustments to various 
settings described in section Parameter Descriptions section can compensate for some of these 
noise sources.

Just as with any radio device, nearby metal conductors can either attenuate or amplify 
surrounding radio signals. Metal screens, coated windows, mounting towers, electrical cables, 
and power lines, 

For maximum detection effectiveness and efficiency, the following may be helpful.

- Mount LD-1 so that it is at least 8 inches away from metal structures.

- Install LD-1 in a location away from radio disturbers, such as those mentioned above.

- Evaluate noise and disturber counts when first installed to ensure a proper environment.

 7.2 Physical Installation

LD-1 may be installed indoors or outdoors. 

The enclosure protects LD-1 from weather conditions and provides convenient mounting 
features.

With Modbus, long cable runs are possible. 1000 ft (300 m) or more is possible with low-
capacitance cable, such as CAT-5. 

Use cable ties or other methods to restrain the cable. Excess strain on the cable may damage the 
sensor.

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Содержание LD-1

Страница 1: ...LD 1 Lightning Detector Manual 57 6043 Rev A ...

Страница 2: ...DYACON LD 1 Manual This page intentional left blank Page 2 35 ...

Страница 3: ...11 4 4 Additional Assembly Images 12 5 0 MODBUS 13 5 1 Modbus Summary 13 5 2 Modbus Utilities 13 5 3 Modbus Commands 14 5 3 1 Supported Functions and Exception Codes 14 5 3 2 Modbus Configuration and Sensor Configuration 14 5 3 3 Lightning Detection Registers 15 5 3 4 Lightning Configuration Registers 16 5 3 5 Error Codes 16 5 3 6 System Status Codes 16 6 0 PARAMETER DESCRIPTIONS 17 6 1 1 Measurem...

Страница 4: ...anging Configuration Settings 28 9 3 Boot Loader 29 9 3 1 Required Equipment 29 9 3 2 Procedure 29 10 0 REPAIR AND SERVICE 30 10 1 Repair 30 11 0 SPECIFICATIONS 31 12 0 MODBUS APPENDIX 32 13 0 FIRMWARE REVISION HISTORY 34 14 0 MANUAL REVISION HISTORY 35 Page 4 35 ...

Страница 5: ...r Dyacon Incorporated a Utah corporation whose website can be found at http dyacon com All contact information can be found at the above URL 1 1 3 Declarations Dyacon LD 1TM is a low power electronic device for industrial applications RoHS All electronic and mechanical components conform to RoHS Directive 2002 95 EC FCC CFR Part 15 This equipment complies with the limits for a Class A digital devi...

Страница 6: ...liability of Dyacon shall in connection with a warranted product be limited in maximum amount to the original purchase price of that product Removal of Serial Number Removal of the original serial number label or reprogramming of the electronic serial number voids any warranty on the device Dyacon will not repair or update products if the serial number label missing or legitimate ownership cannot ...

Страница 7: ...ments Please contact Dyacon or visit the Dyacon com website 2 2 Technical Support 2 2 1 Contact Information Dyacon Inc Phone 435 753 1002 Email support dyacon com Internet www Dyacon com Normal business hours are from 9 00 am to 5 00 pm Mountain Time Zone GMT 0700 2 2 2 Phone Email Support If you need technical support via the phone or email please have the following information ready Product name...

Страница 8: ... and the capabilities of the equipment to which LD 1 is connected LD 1 should be considered an advisory instrument only to augment knowledge skill understanding and judgment of the users Sensor Protocol Descriptions Modbus RTU RS 485 is an electrically robust protocol used in automation systems such as programmable logic controllers PLCs LD 1 uses a default data rate of 19200 bps ensuring adequate...

Страница 9: ...wn below Optional mounting system for attachment to 1 pipe Shown below Outdoor cable ties As required Stainless steel band clamp As required Page 9 35 Image 3 1 LD 1 Sensor Image 3 2 LD 1 Sensor with optional mounting pipe Image 3 3 LD 1 sensor with mounting pipe and pipe mounting system Vertical pipe not included ...

Страница 10: ...l Pipe Fittings When configured with a 1 pipe LD 1 may be used with structural pipe fittings Standard structural pipe fittings for 1 schedule 40 pipe are available from hardware suppliers and manufacturers Hollaender Nu Rail www nurail com J C Denier www denierco com Easyfit www easyfit com Diamond Aluminum www diamond aluminum com KEE Systems www keesystems com McMaster Carr www mcmaster com Grai...

Страница 11: ...has a 1 threaded pipe fitting on the bottom of the sensor Common pipe fittings may be used to attach the sensor to a number of flanges fittings and structures as show in Image 3 3 4 3 Wiring LD 1 ships with shielded 4 conductor outdoor rated instrumentation cable Red 5 to 24 VDC Orange A Brown B Black Electrical ground Bare Earth Ground Shield Page 11 35 Image 4 1 Wired for Dyacon Control Module ...

Страница 12: ...Assembly Instructions DYACON LD 1 Manual 4 4 Additional Assembly Images Bottom View Page 12 35 ...

Страница 13: ...elatively long runs are achievable even without twisted pair cables The wide operating voltage range and low power of LD 1 allows for power to be injected over the same data cable without concern for excess voltage drop Two wires for power and two for data For example 1200 m 4000 ft of Cat 5 cable 24 AWG will result in a voltage drop of less than 0 2 V at an operating current of 2 mA LD 1 ships st...

Страница 14: ...ead Input Register 0x84 01 02 03 04 6 Write Single Register 0x86 01 02 03 04 16 Write Multiple Registers 0x90 01 02 03 04 See Error Code table below for more information 5 3 2 Modbus Configuration and Sensor Configuration The following commands can be used to change the serial port parameters of the lightning detector Address Register Access Type Range Data Type Description 100 101 Read 16 bit Sig...

Страница 15: ...201 Read 0 to 3 16 bit Signed Int System Status 201 202 Read 0 to 32767 16 bit Signed Int Strike Count since last read 202 203 Read 0 to 32767 16 bit Signed Int Noise Count since last read 203 204 Read 0 to 32767 16 bit Signed Int Disturber Count since last read 204 205 Read 0 to 40 63 is out of range 16 bit Signed Int Distance Estimate km 205 206 207 Read 0 to 32767 32 bit Signed Int Energy of La...

Страница 16: ...nt to each request or command Supported command error codes are listed for each command Function Name Description 01 Illegal Function Function not supported or not recognized by the sensor 02 Illegal Addresses Incorrect address address does not exist or address does not support write function 03 Illegal Data Value Data value is outside of allowed range 04 Device Failure Error occurred while attemp...

Страница 17: ...evaluated The Noise Floor Level should be increased if this occurs Disturber Count 203 Each incoming signal that passes the noise threshold is evaluated for shape characteristic If it is determined to be a likely lightning strike the strike count is incremented If it fails to meet the requirements Disturber Count is incremented Following the detection of a disturber the sensor is deactivated for 1...

Страница 18: ... following a power interruption These values are all interrelated Users may need to evaluate the noise and disturber count values and change each of the following values one at a time Analog Front End Gain 110 This is the initial signal front end amplifier All signals noise and desired signals are affected by this value The amplifier has two modes Indoor 1 and Outdoor 0 and should be set according...

Страница 19: ... a 15 minute period before the sensor increments Strike Counter When set to zero 0 Each strike detection will add one 1 to the strike count register When set to two 2 Five strikes must be detected within 15 minutes Once the fifth strike is detected one 1 will be added to Strike Count The following table shows the association between Minimum Number Lightning Strikes value and the required strikes b...

Страница 20: ...on Parameter Descriptions section can compensate for some of these noise sources Just as with any radio device nearby metal conductors can either attenuate or amplify surrounding radio signals Metal screens coated windows mounting towers electrical cables and power lines For maximum detection effectiveness and efficiency the following may be helpful Mount LD 1 so that it is at least 8 inches away ...

Страница 21: ...y of electrical storms such as during cold weather Separate Modbus Port Modbus devices each have unique addresses This allows multiple slave devices to be connected to the same Modbus port However each device must processes the request from the Modbus master to know if it must respond to the request Dyacon sensors use a low power RS 485 transceiver The transceiver is only active when electrical ac...

Страница 22: ...9 2 Modbus Reader Users may find it helpful for configuration and testing to use a PC program An RS 485 to USB adapter can be used to power LD 1 and connect it to a computer Dyacon uses Kury Software ModbusCreator and ModbusReader for production testing KurySoft ModbusReader is free to use When used with the Dyacon LD 1 configuration files the user can see LD 1 registers and configure the settings...

Страница 23: ...le from Dyacon com or Kury Software http kurysoft com 9 2 2 Wiring the Converter Wire the FTDI converter according to the following table and image FTDI Converter Dyacon Sensor Signal Red Red Power Orange Orange RS485 Yellow Brown RS485 Black Black Ground Drain Wire Shield Ground 9 2 3 Connecting to a Computer Attach the FTDI USB to RS485 cable to a USB port on a Windows PC Wait for the driver to ...

Страница 24: ...Software DYACON LD 1 Manual Start ModbusReader and close any sample files that are running Open LightningSensor mbc Page 24 35 ...

Страница 25: ...DYACON LD 1 Manual Software Page 25 35 ...

Страница 26: ...Software DYACON LD 1 Manual Page 26 35 ...

Страница 27: ...e COM Parameters under the Connection menu and use the settings in the image Press F2 or select Connection Connect to start the automatic sensor communication The red and green LEDs on the converter will begin to flash Red indicates that a message was sent and green indicates that a response was received Page 27 35 ...

Страница 28: ...nicating the sensor parameters can be changed Select Sensor Settings Select one of the options such Set Address Enter the new value and press OK Reset the sensor by unplugging the sensor and plugging it back in This will cause the setting on the sensor to change The settings on ModbusReader will need to be updated in order to restore communication with the sensor The baurd rate and parity can be s...

Страница 29: ...upply Dyacon Boot Loader PC utility LD 1 firmware hex file 9 3 2 Procedure 1 Disconnect LD 1 from the host equipment 2 Connect the LD 1 to the PC with an RS 485 converter Available from Dyacon 3 Connect LD 1 to a 12 VDC power source 4 Run the Dyacon Boot Loader Utility See image below 5 Configure the port settings and specify the hex file 6 Watch for program completion 7 Disconnect and return the ...

Страница 30: ...e should have a return material authorization RMA number indicated on the outside of the package Include a detailed description of the problem and any to be performed on the returned unit An RMA number may be requested by phone or email Phone 1 435 753 1002 Email support Dyacon com Normal business hours are 8 am to 5 pm Mountain Time Zone GMT 0700 Page 30 35 ...

Страница 31: ...ad Distance Estimation Energy of Last Strike relative Strike Count 10 minute Strike Count 30 minute Strike Count 60 minute Noise Count 60 minute Disturber Count 60 minute Configuration Parameters Front end Amplifier Gain Noise Floor Level Watchdog Threshold Minimum Number Lightning Strikes Spike Rejection Level ELECTRICAL Power Input 5 VDC to 24 VDC Current 1 6 mAavg at 12 VDC Circuit Protection G...

Страница 32: ... at register number 202 Detailed protocol information is available at www modbus org Request Frame The following is an example of a read of the air temperature humidity and pressure with one request Field Name Length bytes Function Example Data Slave Address 1 Device address 0x02 Function 1 Read holding register 0x03 Register Start Address 2 Sensor address 201 0x00C9 Quantity of Registers 2 Number...

Страница 33: ...ror Frame Field Name Length bytes Function Example Data Slave Address 1 Device address 0x02 Error Code 1 Error code value 0x83 Exception Code 1 Error code values 01 02 03 04 0x01 CRC 2 Error check 0xF070 TX String 02 83 01 70 F0 Page 33 35 ...

Страница 34: ...Firmware Revision History DYACON LD 1 Manual 13 0 Firmware Revision History Version Description of Changes Date v1 Initial release 12 Aug 2016 Page 34 35 ...

Страница 35: ...DYACON LD 1 Manual Document Revision History 14 0 Document Revision History Rev Description Author Date A Initial Release E Bodrero 16 Aug 2016 Page 35 35 ...

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