Dyacon LD-1 User manual

LD-1
Lightning Detector Manual
57-6043 Rev A

DYACON LD-1 Manual
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DYACON LD-1 Manual
Contents
1 .0 NOTICES ...........................................................................................................................................5
1.1.1 Copyright..............................................................................................................................5
1.1.2 Manufacturer.........................................................................................................................5
1.1.3 Declarations..........................................................................................................................5
1.1.4 Warranty Infor ation............................................................................................................5
1.1.5 Product Li itation................................................................................................................6
2 .0 LD-1 INTRODUCTION ...................................................................................................................7
2.1 Scope...............................................................................................................................................7
2.2 Technical Support............................................................................................................................7
2.2.1 Contact Infor ation..............................................................................................................7
2.2.2 Phone / E ail Support..........................................................................................................7
3 .0 PRODUCT OVERVIEW ..................................................................................................................8
3.1 Product Description.........................................................................................................................8
3.2 What Do You Get?..........................................................................................................................9
3.3 What You Need.............................................................................................................................10
3.3.1 Structural Pipe Fittings........................................................................................................10
4 .0 ASSEMBL INSTRUCTIONS ......................................................................................................11
4.1 Required Tools..............................................................................................................................11
4.2 Mounting.......................................................................................................................................11
4.3 Wiring............................................................................................................................................11
4.4 Additional Asse bly I ages.........................................................................................................12
5 .0 MODBUS .........................................................................................................................................13
5.1 Modbus Su ary.........................................................................................................................13
5.2 Modbus Utilities............................................................................................................................13
5.3 Modbus Co ands.......................................................................................................................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 Syste Status Codes...........................................................................................................16
6 .0 PARAMETER DESCRIPTIONS ...................................................................................................17
6.1.1 Measure ent Para eters....................................................................................................17
6.1.2 Configuration Para eters....................................................................................................18
7 .0 SITE CONSIDERATIONS .............................................................................................................20
7.1 Electro agnetic Environ ental....................................................................................................20
7.2 Physical Installation......................................................................................................................20
8 .0 POWER SAVING ............................................................................................................................21
9 .0 SOFTWARE .....................................................................................................................................22
9.1 Introduction...................................................................................................................................22
9.2 Modbus Reader.............................................................................................................................22
9.2.1 Materials.............................................................................................................................23
9.2.2 Wiring the Converter...........................................................................................................23
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DYACON LD-1 Manual
9.2.3 Connecting to a Co puter..................................................................................................23
9.2.4 Changing Configuration Settings........................................................................................28
9.3 Boot Loader...................................................................................................................................29
9.3.1 Required Equip ent...........................................................................................................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 HISTOR ...........................................................................................34
14 .0 MANUAL REVISION HISTOR ...............................................................................................35
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DYACON LD-1 Manual Notices
1.0 Notices
1.1.1 Copyright
© Copyright 2016 Dyacon Inc.
All Rights Reserved
This publication is protected by copyright and all rights are reserved. Any reproduction of this
anual, in part or in full, by any eans, echanical, electronic, or otherwise, is strictly
prohibited without express written per ission fro Dyacon, Inc.
The infor ation in this anual has been carefully checked and is believed to be accurate.
However, Dyacon, Inc. assu es no responsibility for any inaccuracies that ay be contained in
this anual. All infor ation is subject to change.
Trademark Acknowledgments
Dyacon® is a registered trade ark of Dyacon, Inc.
Dyacon LD-1TM and, LDTM are trade arks of Dyacon, Inc.
All other trade arks are property of their respective owners.
1.1.2 Manufacturer
Dyacon, Incorporated, a Utah corporation whose website can be found at http://dyacon.co .
All contact infor ation 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 echanical co ponents confor to RoHS, Directive 2002/95/EC.
FCC CFR Part 15
This equip ent co plies with the li its for a Class A digital device, pursuant to part 15 of the
FCC Rules. These li its are designed to provide reasonable protection against har ful
interference in a co ercial installation.
1.1.4 Warranty Information
Limited Hardware Warranty
Dyacon, Inc. warrants that all Dyacon products and co ponents shall be free fro defects in
aterials and work anship for a period of one (1) year fro the date of ship ent when installed
according to instruction anuals acco panying said hardware and used for the purpose for
which said hardware was designed. In the event a defect in aterials or work anship is
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Notices DYACON LD-1 Manual
discovered and reported to Dyacon within the warranty period, Dyacon will at its option repair
the defect or replace the defective product. This warranty does not apply where the product has
been operated outside the specifications of the product. Dyacon’s obligation hereunder will be
li ited to such repair or replace ent. Custo ers shall have the responsibility to ship the
defective equip ent to Dyacon at its (custo er’s) expense, with all cost of ship ent prepaid.
Dyacon will ship the repaired or replaced ite at its (Dyacon’s) expense using the preferred
ship ent ethod of Dyacon. On-site service will only be offered where the nature of the
installation or failure requires Dyacon presence to troubleshoot or repair.
Disclaimer of Warranties
The warranties set forth above are in lieu of all other warranties of Dyacon, whether written,
oral, or i plied. Dyacon akes no warranties regarding its products (hardware or software),
including without li itation warranties as to erchantability, fitness for a particular purpose, any
warranty arising fro course of perfor ance, course of dealing or usage of trade whether any of
the foregoing warranties are either expressed or i plied. Dyacon specifically akes no
warranties as to the suitability of its products for any particular application. Dyacon shall in no
event be liable for perfor ance, or use of any product covered by this agree ent whether such
clai is based upon warranty contract (express or i plied), strict liability, negligence, or
otherwise. Any responsibility and/or liability of Dyacon shall, in connection with a warranted
product, be li ited in axi u a ount to the original purchase price of that product.
Removal of Serial Number
Re oval of the original serial nu ber label or reprogra ing of the electronic serial nu ber
voids any warranty on the device. Dyacon will not repair or update products if the serial nu ber
label issing or legiti ate ownership cannot be verified. Dyacon ay not return equip ent that
is issing serial nu bers or where legiti ate ownership is in question.
Updates or Modifications
Dyacon shall be under no obligation to update or odify its products except as herein noted to
correct defects or errors. Custo er agrees that all representation and warranties contained herein
shall be i ediately null and void in the event of any incorrect installation, odification,
alteration, or change in or to any product affected by or on behalf of custo er except for a
change ade by Dyacon or other direct supervision thereof.
1.1.5 Product Limitation
LD-1 is not a lightning protection device.
LD-1 will not detect all lightning strikes.
LD-1 cannot predict lightning strikes or the potential for lightning strikes.
The probability and efficiency of strike detection is dependent on the installation, environment,
user settings, and the capabilities of the equipment to which LD-1 is connected. nit-to-unit
variation may also result in differences in detection efficiency.
LD-1 should be considered an advisory instrument only, the instrument is intended to augment
knowledge, skill, understanding, and judgment of the users.
Dyacon assumes no liability for damage resulting from improper use of the instrument,
improper configuration, or the failure of the instrument to detect lightning strikes.
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DYACON LD-1 Manual LD-1 Introduction
2.0 LD-1 Introduction
2.1 Scope
The content of this docu ent is intended for integrators, installers, and users of LD-1TM, which
hereinafter ay be referred to as “LD”, “sensor”, “detector”, or “lightning detector”.
This docu ent includes installation instructions, technical specifications, electrical
require ents, and data protocol infor ation. So e aspects of the equip ent operation ay be
covered in other docu ents. Please contact Dyacon or visit the Dyacon.co website.
2.2 Technical Support
2.2.1 Contact Information
Dyacon, Inc.
Phone: [phone]
E ail: [e-mail]
Internet: www.Dyacon.co
Nor al business hours are fro 9:00 a to 5:00 p . (Mountain Ti e Zone, GMT -0700)
2.2.2 Phone / Email Support
If you need technical support via the phone or e ail, please have the following infor ation
ready:
Product na e, odel nu ber, and serial nu ber.
Your na e and na e of the purchaser of the equip ent.
Na e of co pany, institution, or agency.
Phone nu ber, e ail address.
Billing and Shipping address.
A clear description of the question or proble .
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Product Overview DYACON LD-1 Manual
3.0 Product Overview
3.1 Product Description
Dyacon LD-1TM is an advisory instru ent used for the detection of lightning strikes. The
instru ent indiscri inately detects cloud-to-cloud, intra-cloud, and cloud-to-ground discharges.
LD-1 is a digital output sensor, sending instru ent data and receiving control co ands via a
digital serial port using Modbus-RTU protocol over TIA-485-A (RS-485). Consequently, there is
no easure ent degradation due to cable length.
LD-1 is easily ounted to the end of a 1” pipe using si ple tools and standard structural pipe
fittings.
LD-1 is not a lightning protection device.
LD-1 will not detect all lightning strikes.
LD-1 cannot predict lightning strikes.
The probability and efficiency of strike detection is dependent on the installation, environment,
user settings, 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 auto ation syste s, such as
progra able logic controllers (PLCs). LD-1 uses a default data rate of 19200 bps, ensuring
adequate data throughput with extended cable length capability. The bit rate and address ay be
configured by the user.
Additional fir ware and custo ization options are also available to VARs. Contact Dyacon, Inc.
for ore infor ation.
Mechanical Design
The echanical design for LD-1 was intended to eet the following objectives.
•Mini ize installation hardware and co plexity.
•Facilitate the ounting of the sensor so that it can be spaced fro conductive structures that
ay conduct electro agnetic disturbances.
•Maintain echanical si plicity for easy asse bly and service.
•Protect electronic co ponents fro environ ental conditions.
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DYACON LD-1 Manual Product Overview
3.2 What Do You Get?
LD-1 ships with:
Attached cable
Optional ounting pipe (Shown below)
Optional ounting syste for attach ent to 1” pipe. (Shown below.)
Outdoor cable ties (As required.)
Stainless steel band cla p (As required.)
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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.)

Product Overview DYACON LD-1 Manual
3.3 What You Need
In order to utilize the LD-1 you will need the following.
5 to 24 VDC power supply.*
Modbus host device.*
* Not required if using the LD-1 with a Dyacon control odule.
3.3.1 Structural Pipe Fittings
When configured with a 1” pipe, LD-1 ay be used with structural pipe fittings. Standard
structural pipe fittings for 1” schedule 40 pipe are available fro hardware suppliers and
anufacturers.
Hollaender Nu-Rail (www.nurail.co )
J.C. Denier (www.denierco.co )
Easyfit (www.easyfit.co )
Dia ond Alu inu (www.dia ond-alu inu .co )
KEE Syste s (www.keesyste s.co )
McMaster-Carr (www. c aster.co )
Grainger (www.grainger.co )
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DYACON LD-1 Manual Assembly Instructions
4.0 Assembly Instructions
4.1 Required Tools
Wire cutters to tri cable ties.
Other tools as required by custo ers ounting configuration.
4.2 Mounting
LD-1 has a 1” threaded pipe fitting on the botto of the sensor.
Co on pipe fittings ay be used to attach the sensor to a nu ber of flanges, fittings, and
structures, as show in I age 3.3.
4.3 Wiring
LD-1 ships with shielded, 4-conductor, outdoor-rated instru entation cable.
Red – 5 to 24 VDC
Orange – A (+)
Brown – B (-)
Black – Electrical ground
Bare – Earth Ground (Shield)
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Image 4.1: Wired for Dyacon Control Module

Assembly Instructions DYACON LD-1 Manual
4.4 Additional Assembly Images
Bottom View
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DYACON LD-1 Manual Modbus
.0 Modbus
5.1 Modbus Summary
Modbus is a si ple protocol that can be trans itted over several odes including TCP/IP, TIA-
232-A (RS-232), TIA-485-A (RS-485), TCP/IP, SMS, and any others.
Dyacon LD-1 uses Modbus-RTU over RS-485.
LD-1 is a slave device and ust be connected to a host device, such as a progra able logic
controller (PLC), host co puter with an RS-485 adapter and Modbus software, or to the Dyacon
weather station control odule.
RS-485 is a robust, differential pair electrical protocol that is noise i une and capable of long
cable runs. With twisted pair cabling, such as CAT-5, distances over 1200 (4,000 ft) can be
achieved. LD-1 can be configured for low bit rates to extend the range. Relatively 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 sa e data cable without concern for excess voltage drop. (Two wires for power and two for
data.)
For exa ple, 1200 (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 A.
LD-1 ships standard with 2 (6.5 ft) of cable.
5.2 Modbus Utilities
The address of the sensor and other para eters are configurable. A Modbus co puter utility ay
be required to change these settings. A nu ber of utilities are available including:
ModBusConstructor by KurySoft (www.kurysoft.co )
Si ply Modbus (www.si ply odbus.ca)
ModbusTools (www. odbustools.co )
Only ModBus Constructor and the co panion Modbus Reader have been tested with the
Dyacon product.
A list of Modbus software can be found at: www. odbus.org/tech.php
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Modbus DYACON LD-1 Manual
5.3 Modbus Commands
LD-1 is a Modbus RTU slave device, a Modbus host ust request data fro the sensor.
The following sections describe the Modbus co ands and essages. The basic instructions
should be adequate for Modbus host progra ing. For e bedded developers, additional
protocol details are contained in the Modbus Appendix.
LD-1 requires about 70 s to read sensor ele ents and respond.
The default configuration:
Modbus address 03
Serial Data Para eters 19200, 8-bit data, no parity, 1 stop bit
5.3.1 Supported Functions and Exception Codes
Function Description Supported Error and Exception codes*
3 Read Holding Register 0x83: 01, 02, 03, 04
4 Read 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 ore infor ation.
5.3.2 Modbus Configuration and Sensor Configuration
The following co ands can be used to change the serial port para eters of the lightning
detector.
Address Register Access Type Range Data Type Description
100 101 Read 16-bit Signed Int MM = Product ID
YY = Product Variation
101 102 Read 16-bit Unsigned Int Serial Nu ber
102 103 Read 16-bit Signed Int Fir ware Version
103 104 Read/Write 1-247
Default: 1
16-bit Signed Int Modbus slave address.
104 105 Read/Write 0 = 1200 bps
1 = 2400 bps
2 = 4800 bps
3 = 9600 bps
4 = 19200 bps
5 = 38400 bps
Default: 4
16-bit Signed Int Baud rate.
105 106 Read/Write 0 = None
1 = Odd
2 = Even
Default: 0
16-bit Signed Int Parity
* Refer to Power Saving section for ore details.
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DYACON LD-1 Manual Modbus
5.3.3 Lightning Detection Registers
Common Registers
Address Register Access Type Response
Range
Data Type Description
201 202 Read 0 to 32767 16-bit Signed Int Strike count since last
read.
204 205 Read 0 to 40
63 is out of range.
16-bit Signed Int Distance Esti ate (k )
206 207 Read 0 to 32767 16-bit Signed Int Strike Count 10 inute
206 208 Read 0 to 32767 16-bit Signed Int Strike Count 30 inute
208 209 Read 0 to 32767 16-bit Signed Int Strike Count 60 inute
Full Register List
Address Register Access Type Response
Range
Data Type Description
200 201 Read 0 to 3 16-bit Signed Int Syste 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 Esti ate (k )
205 206+207 Read 0 to 32767 32-bit Signed Int Energy of Last Strike
207 208 Read 0 to 32767 16-bit Signed Int Strike Count 10 inute
208 209 Read 0 to 32767 16-bit Signed Int Strike Count 30 inute
209 210 Read 0 to 32767 16-bit Signed Int Strike Count 60 inute
210 211 Read 0 to 32767 16-bit Signed Int Noise Count 60 inute
211 212 Read 0 to 32767 16-bit Signed Int Disturber Count 60 in
† See Syste Status Code section below.
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Modbus DYACON LD-1 Manual
5.3.4 Lightning Configuration Registers
The following registers ay be used to adjust the detection
Address Register Access Type Range and
Default
Data Type Description
106 107 Read/Write Write '1' to
clear.
16-bit Signed Int Reset to defaults.
110 111 Read/Write 0-7
Default = 0
16-bit Signed Int Analog Front End Gain
111 112 Read/Write 0-7
Default = 2
16-bit Signed Int Noise Floor Level
112 113 Read/Write 0-10
Default = 4
16-bit Signed Int Watchdog Threshold
113 114 Read/Write 0 to 3
(Corresponding
to: 1, 5, 9, 16)
Default = 0
16-bit Signed Int Mini u Nu ber
Lightning Strikes
114 114 Read/Write 0-11
Default = 2
16-bit Signed Int Spike Rejection
5.3.5 Error Codes
The following error and acknowledg ent codes are supported by the LD-1. Not all codes are
relevant to each request or co and. Supported co and error codes are listed for each
co and.
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 atte pting to perfor the
requested action.
5.3.6 System Status Codes
Syste status codes are unique to the sensor, not Modbus protocol exceptions. Syste codes are
bit level codes representing internal functional errors. A clear (0) bit indicates no errors were
detected. A set (1) bit indicates an error.
Contact custo er support if syste errors are encountered.
Hex Values
0x0001 - Calibration on TRCO failed
0x0002 - Calibration on SRCO failed
0x0004 - Cal on LCO failed, too slow
0x0008 - Cal on LCO failed, too fast
0x0010 - Internal co unication error
0x0080 - Lightning sensor not found
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DYACON LD-1 Manual Parameter Descriptions
6.0 Parameter Descriptions
The following is a detailed explanation of each of the sensor para eters.
6.1.1 Measurement Parameters
All of the following values are reset to zero (0) if power to the sensor is interrupted.
System Status (200)
The internal electrical architecture of the sensor uses several chips. The status essage is an
indication of inter-chip co unication and chip error conditions.
Strike Count (201)
The strike count gives the nu ber of detected lightning strikes. Each ti e the register is read,
the value is reset to zero.
For exa ple, if the register holds a value of five (5), after it is read it will be cleared to zero (0).
If the register is read again, it will read zero (0).
The axi u detection rate is 1 s. Consequently, if the register is read once per second, the
register value will never exceed one (1).
Noise Count (202)
High counts of this register indicate that the sensor is detecting a noisy signal environ ent and
the signal cannot be evaluated. The Noise Floor Level should be increased if this occurs.
Disturber Count (203)
Each inco ing signal that passes the noise threshold is evaluated for shape characteristic. If it is
deter ined to be a likely lightning strike, the strike count is incre ented. If it fails to eet the
require ents, Disturber Count is incre ented.
Following the detection of a “disturber”, the sensor is deactivated for 1.5 s. This allows the
disturber to dissipate before further detections are analyzed and reduces the probability of false
detections. This dead period is fixed.
Distance Estimate (204)
Once a detected signal is deter ined to be lightning, an energy analysis is perfor ed. A rough
approxi ation of the distance to the lightning strike is given. Inas uch as lightning it self can
span several iles and can range in energy, the distance value should be considered an
approxi ation.
Devices to which LD-1 is connected can use Distance Esti ate to deter ine whether a stor
front is approaching or receding. This value is not auto atically calculated on the sensor due to
the uncertainty in the powered state of the sensor; a power interruption of the sensor ay lead to
an incorrect indication.
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Parameter Descriptions DYACON LD-1 Manual
Energy of Last Strike (205)
The detected energy of the received signal is a relative value only and does not correlate to the
actual energy dissipated by the lighting.
The energy value is provided as a reference to integrators.
Strike Count - 10 minute (207)
This count is a rolling value of strikes occurring over the previous 10 inutes. This value
includes the Strike Count value.
Strike Count - 30 minute (208)
This count is a rolling value of strikes occurring over the previous 30 inutes. This value
includes the 10 inute count.
Strike Count - 60 minute (209)
This count is a rolling value of strikes occurring over the previous 60 inutes. This value
includes the 30 inute count.
Noise Count - 60 minute (210)
Accrued noise count over 60 inutes.
Disturber Count - 60 minute (211)
Accrued disturber count over 60 inutes.
6.1.2 Configuration Parameters
All of the following para eters are persistent, if changed they are retained following a power
interruption.
These values are all interrelated.
Users ay need to evaluate the noise and disturber count values and change each of the
following values one at a ti e.
Analog Front End Gain (110)
This is the initial signal (front end) a plifier. All signals, noise and desired signals, are affected
by this value.
The a plifier has two odes, Indoor (1) and Outdoor (0), and should be set according to the
location in which LD-1 is installed. The sensor default is Outdoor (0).
Noise Floor Level (111)
Like static on the radio, the noise floor is the a bient white noise that a receiver hears. In so e
environ ents, the noise floor is higher than in others. Increasing this value tells the sensor that it
is operating in a noisy environ ent.
Increasing this value will allow only the desired high signals to be analyzed. If it is set too high it
ay of decreasing sensitivity to lightning strikes.
Decreasing the value will increase sensitivity. If decreased too far, the noise ay overload the
signal processing or increase the probability of false detections.
When noise is detected, the sensor will deactivate signal processing for approxi ately 1.5 s.
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DYACON LD-1 Manual Parameter Descriptions
If LD-1 is installed in an electrically noisy environ ent, the Noise Counter will be high. Users
will want to increase the Noise Floor Level setting.
Watchdog Threshold (112)
The detector is constantly listening to inco ing signals. When a signal exceeds the Watchdog
Threshold, the signal is processed and the signal shape is evaluated to deter ine whether it is
rando noise (disturber) or a lightning strike.
Increasing the watchdog level increase the level required before the signal is evaluated.
If the disturber counter is high, increase the Watchdog Threshold.
Minimum Number Lightning Strikes (113)
Setting this register to a value above zero, a ini u nu ber of strikes ust be detected within
a 15 inute period before the sensor incre ents 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 ust be detected within 15 inutes. Once the fifth strike is
detected, one (1) will be added to Strike Count.
The following table shows the association between Mini u Nu ber Lightning Strikes value
and the required strikes before Strike Count is incre ented.
Register Value Min Number of
Lightning Detections
0 1
1 5
2 9
3 16
Setting this value above zero (0) has the effect of ini izing the nu ber of false triggers.
Spike Rejection (114)
The Spike Rejection value can be used to ini ize false strikes. Spike Rejection is applied after
a signal passes the Watchdog Threshold.
Larger Spike Rejection values will reduce the likelihood that a disturber will be categorized as a
strike, but also increase the probability that a strike will not be detected.
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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 atch to characteristic shapes and energy patterns of lightning. Other
equip ent ay interfere with the desired signals and cause a desensitization of LD-1 detection
capabilities or result in false detections.
Equip ent that intentionally or unintentionally creates an electrical arc, such as switches,
otors, and welders ay interfere with LD-1.
Digital co puter equip ent, s art phones, and so e light fixtures e it broadband noise that
can detected by LD-1.
The effect these noise sources can be seen by the Noise Count value. Adjust ents to various
settings described in section Para eter Descriptions section can co pensate for so e of these
noise sources.
Just as with any radio device, nearby etal conductors can either attenuate or a plify
surrounding radio signals. Metal screens, coated windows, ounting towers, electrical cables,
and power lines,
For axi u detection effectiveness and efficiency, the following ay be helpful.
- Mount LD-1 so that it is at least 8 inches away fro etal structures.
- Install LD-1 in a location away fro radio disturbers, such as those entioned above.
- Evaluate noise and disturber counts when first installed to ensure a proper environ ent.
7.2 Physical Installation
LD-1 ay be installed indoors or outdoors.
The enclosure protects LD-1 fro weather conditions and provides convenient ounting
features.
With Modbus, long cable runs are possible. 1000 ft (300 ) or ore is possible with low-
capacitance cable, such as CAT-5.
Use cable ties or other ethods to restrain the cable. Excess strain on the cable ay da age the
sensor.
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