Leak Detection
LD1500
User Guide
Version 3.5
Copyright and Trademark Notices
© Raymond & Lae Engineering, Inc. 2011. All rights reserved. RLE® is a registered trademark and
SeaHawk™, Falcon™, and Raptor™ are trademarks of Raymond & Lae Engineering, Inc. The
products sold by Raymond & Lae Engineering, Inc. are subject to the limited warranty, limited liability,
and other terms and conditions of sale set forth at http://rletech.com/RLE-Terms-and-Conditions.html.
Revision History
Rev. No. Date
2.0 June 2010
2.1 October 2010
2.2 February 2011
3.0 April 2013
Note: As necessary, blank pages are added to make the page count even.
Copyright and Trademark Notices
© Raymond & Lae Engineering, Inc. 2012. All rights reserved. RLE® is a registered trademark and
SeaHawk™, Falcon™, and Raptor™ are trademarks of Raymond & Lae Engineering, Inc. The
products sold by Raymond & Lae Engineering, Inc. are subject to the limited warranty, limited liability,
and other terms and conditions of sale set forth at http://www.rletech.com/.
Revision History
Rev. No. Date Rev. No. Date
2.0 June 2010 3.4 March 2018
2.1 October 2010 3.5 April 2019
2.2 February 2011
3.0 April 2013
3.1 August 2014
3.2 September 2015
3.3 December 2016
2 LD1500 User Guide 800.518.1519
Manufacturer’s Notes
This product is manufactured by RLE Technologies, 104 Racquette Drive, Fort Collins, CO, 80524. If
this product is used in any manner other than that specified by the manufacturer, the protection
provided by the equipment may be impaired.
Product Registration
Product registration helps RLE Technologies inform owners of:
• Product upgrades
• Firmware enhancements
• New products and technologies
• Special offers available only to registered users
Any information provided to RLE Technologies through the registration form will be regarded as
confidential. RLE will not sell or distribute any of the information to third parties.
Technical Support
Before you install an LD1500, refer to RLE Technologies’ website, www.rletech.com, to ensure you are
using the most recent version of all documentation.
Personal assistance is available Monday through Friday, from 8:00 a.m. to 5:00 p.m. MST.
A request for assistance may be sent to support@rletech.com
Otherwise, please call us directly at: 800.518.1519.
The following information is located on the bottom of each LD1500 unit. Please have this information
available whenever a technical support call is placed:
Product Model Number
Product Serial Number
Product Manufacture Date
The LD1500 is not a field-serviceable item and must be sent back to RLE Technologies for mechanical
repair. Power must be disconnected (unplugged) from the LD1500 any time the unit is mechanically
serviced. Physically unplug power from the unit any time you are making wiring connections to or from
the LD1500.
RLE cannot accept an item for repair without a Return Materials Authorization number, which must be
provided by RLE.
rletech.com LD1500 User Guide 3
RLE Product Warranty
Seller warrants to the Ultimate Purchaser (the purchaser who buys for use and not for resale) that all
products furnished under this order and which are manufactured by Seller will conform to final
specifications, drawings, samples and other written descriptions approved in writing by Seller, and will be
free from defects in materials and workmanship. These warranties shall remain in effect for RLE
Manufactured parts for a period of twenty four (24) months after shipment. These warranties shall remain in
effect for RLE distributor supplied parts for a period defined by the original manufacturer’s warranty after
shipment. All parts replaced or repaired in the warranty period shall carry the unexpired portion of the
original warranty. A unit placed with the purchaser on consignment and then later purchased will be
warranted for twenty four (24) months [original manufacturer’s warranty for RLE distributor supplied parts]
from the time the Seller receives notification of the Purchaser’s intent to purchase said consigned item.
Products are NOT life and safety certified. In no event shall the Seller be liable for loss, damage, or expense
directly or indirectly arising from the use of the units, or from any other cause, except as expressly stated in
this warranty. Seller makes no warranties, express or implied, including any warranty as to merchantability
or fitness for a particular purpose or use. Seller is not liable for and Purchaser waives any right of action it
has or may have against Seller for any consequential or special damages arising out of any breach of
warranty, and for any damages Purchaser may claim for damage to any property or injury or death to any
person arising out of its purchase or the use, operation, or maintenance of the product. Seller will not be
liable for any labor subcontracted or performed by Purchaser for preparation of warranted item for return to
Seller’s factory or for preparation work for field repair or replacement. Invoicing of Seller for labor either
performed or subcontracted by Purchaser will not be considered as a liability by the Seller.
The liability of Seller hereunder is limited to replacing or repairing at Seller’s factory or on the job site at
Seller’s option, any part or parts which have been returned to the Seller and which are defective or do not
conform to such specifications, drawings or other written descriptions; provided that such part or parts are
returned by the Ultimate Purchaser within ninety (90) days after such defect is discovered. The Seller shall
have the sole right to determine if the parts are to be repaired at the job site or whether they are to be
returned to the factory for repair or replacement. All items returned to Seller for repair or replacement must
be sent freight, prepaid to its factory. Purchaser must obtain Seller’s Return Material Authorization prior to
returning items. The above conditions must be met if warranty is to be valid. Seller will not be liable for any
damage done by unauthorized repair work, unauthorized replacement parts, from any misapplication of the
item, or for damage due to accident, abuse, or act of God.
This warranty shall be exclusive of any and all other warranties express or implied and may be modified only
by writing signed by any officer of the Seller. This warranty shall extend to the Ultimate Purchaser but to no
one else. Accessories supplied by Seller but manufactured by others carry any warranty the manufacturers
have made to Seller and which can be passed on to the Ultimate Purchaser.
Seller makes no warranty with respect to whether the products sold hereunder infringe any patent, U.S. or
foreign, and Purchaser represents that any specially ordered products do not infringe any patent. Purchaser
agrees to indemnify and hold Seller harmless from any liability by virtue of any patent claims where
Purchaser has ordered a product conforming to Purchaser’s specifications, or conforming to Purchaser’s
specific design.
Purchaser has not relied and shall not rely on any oral representation regarding the Product sold hereunder
and any oral representation shall not bind Seller and shall not be part of any warranty.
4 LD1500 User Guide 800.518.1519
Contents
1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Reference Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 Connections and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Connections and Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
P1: Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TB1: Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TB2: Cable Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
P2: RJ45 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SW1.1: Ethernet Port Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SW1.2:EIA-485 Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TB3: EIA-485 Modbus Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
P4: EIA-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Installing the LD1500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connecting the Leak Detection Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Securing Cable to the Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Applying Power to the LD1500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Set the LD1500's IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Set the LD1500's IP Address Using a Web Browser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Set the LD1500’s IP Address using an EIA-232 Connection. . . . . . . . . . . . . . . . . . . . . . . . . 20
Calibrate Cable Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Home/Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Alarm Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Leak Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Web Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Network/IP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SNMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
SNMP/Syslog Communities 1 & 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
SNMP Trap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
EIA-485/Modbus/N2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
BACnet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
BACnet Register FD/BDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
BACnet Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
System Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
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5 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Implementation Basics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Modes of Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Slave Address Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Function Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Data Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Error Check (Checksum) Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Exception Responses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Packet Communications for the LD1500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Function 03: Read Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Function 04: Read Input Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Function 06: Preset Single Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Function 16: Preset Multiple Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
RTU Framing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
AFirmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Update the Flash Firmware Via Web Interface/TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Update the Firmware Via X-Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Update the Flash Firmware Via Bootloader. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
B Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
C Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
D Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
970.484.6510 6 rletech.com
Figures
1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2 Connections and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 2.1 LD1500 Connections and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 3.1 SeaHawk Sensing Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 3.2 Cable Installation Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Figure 4.1 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 4.2 LD1500 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 4.3 Alarm Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 4.4 Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 4.5 Leak Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 4.6 Web Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 4.7 Network/IP Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 4.8 SNMP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 4.9 SNMP/Syslog Communities Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 4.10 SNMP Trap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 4.11 Modbus/EIA-485 Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 4.12 BACnet Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 4.13 BACnet Register FD/BDT Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 4.14 BACnet Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 4.15 System Management Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
A Firmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
B Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
C Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
D Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
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970.484.6510 8 rletech.com
Tables
1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Connections and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 Web Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 4.1 Leak Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 4.2 Web Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 4.3 Network/IP Configuration Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 4.4 SNMP Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 4.5 EIA-485/Modbus/N2 Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 4.6 BACnet Configuration Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 4.7 BACnet Alarm Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 4.8 System Management Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5 Modbus Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 5.1 Exception Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 5.2 Read Output Registers Packet Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 5.3 Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 5.4 Read Input Registers Packet Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 5.5 Input Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 5.6 Status Flags (Register 30001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 5.7 Preset Single Register Packet Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 5.8 Preset Multiple Registers Packet Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 5.9 Response Sample. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
A Firmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
B Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
C Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table C.1 Troubleshooting Problems with the LD1500 . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
D Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table D.1 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
rletech.com 9 970.484.6510
970.484.6510 10 rletech.com
1.1. Description
The LD1500 is a complete monitoring system that detects and reports the presence of water
and other conductive liquids. The LD1500 couples SeaHawk Leak Detection Cable (sensing
cable) with an advanced control panel. Each LD1500 monitors up to 1,500 feet (457.2m) of
sensing cable. When a conductive liquid comes in contact with the sensing cable, an Alarm
LED is illuminated red on the front panel, the distance to the leak is shown on the LD1500’s
web page, and alarm notifications are distributed via user-configurable Modbus (EIA-485
RTU or TCP/IP), BACnet (EIA-485 MS/TP or IP), or SNMP.
C HAPTER
CHAPTER 0PRODUCT OVERVIEW
1.2. Operation
When the LD1500's analog circuitry measures a current in excess of the user-defined leak
threshold, the unit's microprocessor computes the distance to the leak. The unit then
annunciates the leak and logs the alarm in its event log. The LD1500 provides a webpage
interface to allow users to get updates on the unit's conditions via the Internet or local area
network. The LD1500 also provides Modbus and BACnet outputs via EIA-485, twisted-pair
wire or TCP/IP.
Note The LD1500 produces an alarm in the following conditions:
♦ Leak detected
♦ Cable break (or cable fault)
♦ Cable contamination
♦ Loss of communications
The LD1500 is a supervised system; it continually monitors the cable for continuity. A cable
break or excess contamination of the cable causes an Alarm indication and notification.
rletech.com LD1500 User Guide 11
1 Product Overview
1.3. Mechanical Description
The LD1500 is built with one circuit board. The main board is mounted inside of the
enclosure.
1.4. Installation
The LD1500 is a wall mounted device. Before applying power to the unit, ensure that all
connections are correct and all screw terminals are secure. The LD1500 requires and isolated
power supply and is powered by 24 VAC or 24 VDC power. A power supply is not included
with the LD1500. Purchase an RLE power supply, either the PSWA-DC-24 (24VDC isolated
power) or the WA-AC-24 (24VAC isolated power). DO NOT connect 115/230 VAC to the
unit; damage will occur to the circuitry.
1.5. Reference Map
Users are advised to purchase a framed reference map (FM1114) for use with the LD1500 to
aid in locating any detected leaks along the sensing cable. Once all the sensing cable is
installed, compare this reference map with the actual cable installation. Note any discrepancies
and return the map to the original author for correction. Keep a copy for use until the map is
revised.
1.6. Web Interface
The LD1500's web page interface provides remote information updates via network
communications.
A more detailed description of the web page interface can be found in Chapter 4, “Web
Interface” on page 23.
12 LD1500 User Guide 800.518.1519
C HAPTER
Status LED
CHAPTER 0CONNECTIONS AND INDICATORS
The LD1500 contains one circuit board. All connections are accessible when the unit is inside
of its enclosure. The connectors on the main board, found at the bottom of the following
photograph, are labeled TB1 through TB3 and P1 through P4.
Figure 2.1
rletech.com LD1500 User Guide 13
LD1500 Connections and Indicators
2 Connections and Indicators
2.1. Connections and Default Settings
2.1.1 P1: Input Power
This is an optional barrel connection for input power (as you may also use TB1 for input
power) with the following connection:
Inside positive (+)
Outside negative (-)
The LD1500 requires an isolated power supply. Power supplies are available from RLE and
are not included with the LD1500. Contact RLE directly to purchase either RLE part number
PSWA-DC-24 (24VDC isloated power supply) or WA-AC-24 (24VAC isolated power supply.
2.1.2 TB1: Input Power
This is an optional two position connector (as you may also use P1 for input power) with the
following connections:
TB1-1 24VDC positive (+)
TB1-2 24VDC negative (-)
The LD1500 requires an isolated power supply. If you have purchased a PSWA-DC-24 or
WA-AC-24 from RLE Technologies, you may need to snip off the barrel connector and strip
the ends of the wires so they can be placed into TB1.
Polarity suggestions are optional, as the LD1500 power inputs are connected directly to an
internal bridge rectifier. 24VAC uses the same power connector as 24VDC.
2.1.3 TB2: Cable Interface
SeaHawk Sensing Cable connects to TB2. Since sensing cable cannot connect directly to a
controller, a15 foot (4.57m) non-sensing leader cable is required (included in a leader cable
kit: part #LC-KIT). Connect the leader cable wires to TB2 as follows, and connect the sensing
cable to the leader cable.
TB2-1 White wire
TB2-2 Black wire
TB2-3 Green wire
TB2-4 Red wire
2.1.4 P2: RJ45 Network
A 10/100 Ethernet connection is available to connect the LD1500 on a local area network. Use
a crossover cable for initial connection and configuration. The default settings are as follows:
IP Address: 10.0.0.188
Subnet Mask: 255.255.255.0
14 LD1500 User Guide 800.518.1519
2 Connections and Indicators
2.1.5 SW1.1: Ethernet Port Configuration
Switch SW1.1, when switched DOWN, enables 10/100BASE-T Auto Negotiate. When
switched UP, it locks the Ethernet port in 100BASE-T. Auto Negotiate does not work with
some gigabit switches; therefore, the LD1500 ships with switch SW1.1 in the UP, 100BASET locked, position.
2.1.6 SW1.2:EIA-485 Termination
Switch SW1.2, when switched ON (DOWN), places a termination resistor across the + and terminals of the EIA-485 port. This is used when the LD1500 is the last unit on an EIA-485
network.
2.1.7 TB3: EIA-485 Modbus Port
TB4 connects to an EIA-485 network. A grounded shield contact is provided for connection to
shielded cable. If the shield contact is used, verify the power connector is properly grounded
and there is no voltage potential between units on the network. The EIA-485 port is set to 8
data bits, no parity, and 1 stop bit (8, N, 1). Connect the EIA-485 wires to TB4 as follows:
TB3-1 A (+)
TB3-2 B (-)
TB3-3 Shield
2.1.8 P4: EIA-232 Connector
The EIA-232 uses a baud rate of 9600. The EIA-232 port is set to 8 data bits, no parity, and 1
stop bit (8, N, 1). A straight through cable should be used to connect a terminal or PC to the
LD1500. This connection should only be used for Setting of the IP address, advanced
diagnostics, firmware uploading, and troubleshooting only.Connections and Default Settings
2.2. Indicators
2.2.1 Status LED
The front panel of the LD1500 features a status LED. This LED blinks once every two seconds
to indicate the firmware on the LD1500 is running and active.
rletech.com LD1500 User Guide 15
2 Connections and Indicators
16 LD1500 User Guide 800.518.1519
3.1. Installing the LD1500
The LD1500 is a wall mounted device. There are four mounting holes on the sides of the unit
spaced 6.6 inches (.167m) apart. Use drywall anchors if securing the unit to drywall.
C HAPTER
CHAPTER 0INSTALLATION
3.2. Connecting the Leak Detection Cable
The LD1500 is shipped with a 15-foot (4.57m) leader cable. One end of this leader cable
connects to the LD1500 controller, and the other end connects to the SeaHawk sensing cable.
Connect each end of the leader cable as follows:
1 With the screws of the terminal block connector on the LD1500 facing up, connect the four
stripped, bare wires of the leader cable to the terminals in this order, from left to right:
white, black, green, red. Tighten the screws to secure the ends of the leader cable, and plug
the connector into TB2. Make sure the wires, from left to right, are in the white-blackgreen-red order.
Note If the terminal connector is removed from the end of the cable, make sure the wires are in
white-black-green-red order when the connector is reapplied.
2
Unscrew the end-of-line (EOL) terminator from the other end of the leader cable.
3 Attach the first length of leak detection cable (sensing cable) to the leader cable.
Figure 3.1
rletech.com LD1500 User Guide 17
SeaHawk Sensing Cable
3 Installation
WARNING
4 Route the sensing cable according to a cable layout diagram, if provided.
5 Secure the EOL terminator on the unoccupied end of the sensing cable.
Note It is important to finish the end of the SeaHawk Water Leak Detection Cable (sensing cable)
with the end terminator (EOL). If the EOL terminator is not present, a cable fault will register.
Note any variances between the cable layout diagram and the actual cable installation.
3.2.1 Securing Cable to the Floor
Secure the sensing cable to the floor with either J-clips, or one of the other approved methods
shown in Figure 3.2. J-clips, available from RLE and designed specifically for use with
sensing cable, are the manufacturer's recommended installation method and can be installed as
follows:
♦ Place one J-clip every 5 to 6 feet (1.52 to 1.83m) along the length of the sensing cable and
one at each turn of the cable. Use more J-clips if a “tighter” configuration is required.
♦ If the cable is installed over an obstruction, place a J-clip on the cable on both sides, as
close to the obstruction as possible.
Do not install the cable directly in front of an air conditioner. Allow a minimum of 4
to 6 feet (1.22 to 1.83m) between the unit and the cable. If the cable is too close to
the air conditioning unit’s air stream, the moisture from the humidifier may cause
false leak readings. If the cable must be installed in front of an air conditioning
unit, place the J-clips 12 to 18 inches (.305 to .457m) apart.
Figure 3.2
18 LD1500 User Guide 800.518.1519
Cable Installation Methods
3.3. Applying Power to the LD1500
Once the SeaHawk sensing cable is connected to the unit, power can be applied. The LD1500
requires an isolated power supply. A power supply is not included with the LD1500. If you
wish to use 24VDC power, the LD1500 requires RLE power supply PSWA-DC-24 (not
included - purchase separately from RLE). If you wish to use AC power, the LD1500 requires
RLE power supply WA-AC-24 (not included - purchase separately from RLE).
Run an isolated power supply to the location of the unit.
Before applying power to the unit, ensure all cable and communication connections are
complete. The LD1500 begins booting once power is applied. Wait approximately one minute.
No alarm should be present.
On the web page interface, the cable length is displayed. If this reading varies by more than
±5% of the actual length of cable installed, verify the installation. The LD1500 should not
require any calibration. If any calibration is required, verify that the cable current is 0 (zero)
before calibrating or false and inaccurate readings will occur.
3.4. Communication
3 Installation
The LD1500 will not communicate over a user's network the first time it is connected to the
network. The manufacturer programs the LD1500 with a default IP address: 10.0.0.188,
subnet: 255.255.255.0 and gateway (Def Route): 10.0.0.1. These settings must be changed to
IP addresses that correspond with the user's network before the LD1500 can communicate
over the network.
3.4.1 Set the LD1500's IP Address
♦ Via the Web browser
♦ Via the EIA-232 interface
3.4.1.1 Set the LD1500's IP Address Using a Web Browser
1 Plug a crossover network cable into the laptop or workstation that will be used to configure
the LD1500. This cable is not intended to be connected to a network hub.
2 Write down the computer's IP address and Subnet Mask. Then change the IP address and
Subnet Mask of the computer from its existing address to one that will allow it to
communicate with the LD1500, such as 10.0.0.190. It may be beneficial to set the IP
address to one that is one number different from the Falcon's IP address. Consult the
computer's manual or your IT Department before attempting this.
3 Connect the other end of the network cable to the Ethernet port on the LD1500. Access the
LD1500 through a Web browser by typing the IP address into the location bar. Enter the
LD1500 user name and password when prompted.
Note The default user name is “
There is no default password — leave the password field empty.
4
Select the Configuration Menu link, then select the Network Settings link. Change the IP
address, Subnet Mask, and Def Route to ones provided by the network administrator. Press
the Submit Changes button. The LD1500 will save the new IP address and reboot. You
rletech.com LD1500 User Guide 19
ld1500
” (use all lowercase, as user name is case sensitive).
3 Installation
must now use the new IP address and reset your computer to its original IP address and
Subnet Mask.
5 Change the IP address of your computer back to its original IP address. If the computer was
configured as DHCP (the network domain controller assigns an IP address) return it to this
state. This may require assistance from your IT Department, or you may need to consult the
computer's manual
6 The computer and the LD1500 are now both configured to communicate on the network.
Both should be accessible via the network. Connect the PC and the LD1500 to the network.
From the PC Web browser, type in the IP address of the LD1500. Enter the user name and
password as stated above to verify network access to the LD1500.
3.4.1.2 Set the LD1500’s IP Address using an EIA-232 Connection
To use the EIA-232 interface:
1 Connect the EIA-232 port (P4) on the LD1500 to a terminal or PC running terminal
emulation software (such as HyperTerminal) with a 9-pin male-female straight through
serial cable.
2 Set the appropriate communication port to 9600 baud, 8 data bits, no parity, 1 stop bit
(9600/N/8/1), and no software or hardware flow command.
3 Once the terminal emulation software starts, type ? and press ENTER on the keyboard and
the Main Menu should appear. If the Main Menu does not appear, check the communication
settings and make sure the unit is powered on.
4 From the Main Menu type “netcfg” to select the Network Configuration Menu.
5 Enter the new IP address for the LD1500 by typing ip xxx.xxx.xxx.xxx where
xxx.xxx.xxx.xxx is the new IP address of the unit. Separate each field with a decimal point
— for example, type ip 10.0.0.50 <enter>.
6 The LD1500 will erase a memory block and copy data to Flash memory before rebooting.
7 The LD1500 IP address is now set and the LD1500 can be accessed through a Web browser
using the new IP address.
8 Repeat steps 4-7 to change the Subnet Mask and Def Route, if needed, using the commands
nm xxx.xxx.xxx.xxx to change the Subnet Mask and dg xxx.xxx.xxx.xxx to change the
default gateway.
20 LD1500 User Guide 800.518.1519
3.5 Calibrate Cable Resistance
Distance-read leak detection systems are resistance-based. RLE’s orange water sensing cable
has a base resistance of 2.8 ohms/foot, while most other sensing cables, including RLE’s green
chemical resistant sensing cable, have a resistance of 4.0 ohms/foot.
The resistance of each length of sensing cable may be slightly more or less than the base
resistance due to manufacturing variances. For this reason, the cable length displayed on the
home page of the web interface may be slightly more or less than the actual length of cable
installed.
A system configured using base resistance values will still be very accurate. If you wish to fine
tune the resistance value of your LD1500 system to make it more precise, you may do so. This
will increase the accuracy of the system, and bring the LD1500’s reported installed cable
length value in line with the actual length of cable installed.
1 Ensure the LD1500 has been powered and has all the sensing cable attached to it, with no
alarms present.
2 Gather and record the following data from the home page of the web interface:
Cable Length (as reported by the LD1500)
Cable Current
Leg 1 Resistance
Leg 2 Resistance
3 Installation
Record the resistance per foot setting, as reported by the LD1500. This can be found on the
Leak Configuration page of the web interface (Configuration > Leak Settings).
Reported Resistance per Foot
3 Note the actual (physical + simulated) length of cable physically connected to the system.
For your reference:
♦ WCCS simulates 50 ft. ♦ XCON simulates 150 ft.
♦ SDZ simulates 50 ft. ♦ Nonsensing cable does not add
any length to a system
Record this sum:
Actual length of cable connected to LD1500
4 Verify the current reading on the cable from your recorded values above. This value must
be less than 15 μA in order to calibrate the system. If the current is higher than 15μA, clean
the cable. Isopropyl alcohol works well to remove any contamination that might have
gotten onto the cable during installation.
5 To calculate the most accurate resistance value for the system, divide the reported cable
length by the actual cable length, and multiply the quotient by the reported resistance.
rletech.com LD1500 User Guide 21
3 Installation
For example:
Cable Length (as reported by the LD1500) 391 feet
Cable Current 0 μA
Leg 1 Resistance 1088 Ohms
Leg 2 Resistance 1095 Ohms
Reported Resistance 2.800 Ohms/foot
One 15 foot leader cable (leader cable does not count toward the total length of cable
installed), one weighted cable connector (simulates 50 feet of cable), and one 330 foot
section of cable are connected to the system.
Actual length of cable connected to LD1500
380 feet
0 feet + 50 feet + 330 feet
The actual resistance of the cable installed with this LD1500 is 2.881 ohms per foot.
6 Replace the resistance per foot setting in the LD1500 with this newly calculated value. This
can be edited on the Leak Configuration page of the web interface (Configuration > Leak
Settings).
When using the web interface, remember to click the Submit Changes button to save the
adjusted resistance value.
In our example, adjusting the resistance value changed the reported cable length from 391
feet to 380 feet. This improves the accuracy of the system because the reported cable length
more closely matches the physical length of cable connected to the system.
22 LD1500 User Guide 800.518.1519
C HAPTER
CHAPTER 0WEB INTERFACE
The LD1500’s network connection allows users to configure and view current information
from the LD1500. When logging on to the LD1500, navigate to the unit's IP address in a Web
browser. A prompt will ask for a username and password. Enter in the appropriate
information. Default setting include:
IP: 10.0.0.188
Username: ld1500
Password: -none/blank-
4.1. Home/Main Menu
When logging into the LD1500, the first page display is the Home page. All vital leak
detection information is displayed in the main table.
Links are available on the left side of the Home page, including: Home, Alarm Log, and
Configuration.
Figure 4.1
rletech.com LD1500 User Guide 23
Home Page
4 Web Interface
Field Description
Alarm Status If the controller is in an alarm state, details regarding the alarm are
noted in this field. The field is color coded to indicate the type of
alarm.
sysUp Time The amount of time that has passed since the system was last
reset or powered on.
Cable Length The length of cable connected to the controller, as calculated by the
LD1500.
Cable Current The amount of current running on the sensing cable.
Leg 1 Resistance The resistance of Leg 1 is displayed in Ohms.
Leg 2 Resistance The resistance of Leg 2 is displayed in Ohms.
Leak Alarm Count The number of leak alarms detected by the system since it was last
reset.
Contamination
Alarm Count
The number of leak alarms detected by the system since it was last
reset.
Remeasure Count When a leak is detected, remeasure indicates how many seconds
remain before the distance to the leak is measured again.
Firmware The firmware version currently running on the system.
Bootloader The bootloader version currently running on the system.
Bottom Row Statistics The main page of the web interface loads once, and then the data
in the fields is refreshed on a regular basis. Because of the way the
page loads, you will not see the entire page flash to blank and
reload completely, but the data will be refreshed. Because the page
refresh may be hard to detect, the bottom of the page features
statistics that let you know the data you’re viewing is up to date
Page loaded at: The date and time the information on this page first
loaded
Refresh: The number of times the data within the fields has been
refreshed. This number increases as the LD1500 is pinged for new
data.
Timeout: The opposite of Refresh. If the LD1500 goes down while
this page is viewed, the timeout field will track how long
communications are interrupted.
Figure 4.2
24 LD1500 User Guide 800.518.1519
LD1500 Home Page
4.2. Alarm Log
The Alarm Log page displays a table of Alarm History. The Alarm History table displays
Alarms and events recorded in the unit's memory log of the last 10 events. The alarms are
displayed as follows:
TYPE - SYSTEM_TIME_STAMP DESCRIPTION
SYSTEM_TIME_STAMP is displayed as xxd HH:MM:SS format since the system was
powered up where xxd = days, HH=hours (01-24), MM=minutes (01-60) and SS=seconds
(01-60).
DESCRIPTION provides details about the current alarm/event (e.g. Leak, Cable Fault,
etc.).
4 Web Interface
Figure 4.3
Alarm Log Page
4.3. Configuration
The Configuration page provides access to a menu of available settings. Options for these
setting are detailed below.
Figure 4.4
Configuration Menu
rletech.com LD1500 User Guide 25
4 Web Interface
4.3.1 Leak Settings
Use the Leak Configuration menu to fine tune system variables, including leak and
contamination thresholds.
Figure 4.5
Option Description
Leak Trip Point The threshold for the amount of water required to trigger a leak
Contamination Trip
Point
Leak Configuration Menu
alarm. Adjust this number to adjust the sensitivity of the leak alarm.
A lower number yields a more sensitive system, so the system will
trigger a leak alarm with less water present.
A higher number produces a less sensitive system, so more water
is required to trigger an alarm.
Enter a value between 25 and 295 microamps.
Default setting: 150uA.
The threshold for the amount of contamination required to trigger a
cable contamination alarm. Adjust this number to adjust the
sensitivity of the contamination alarm.
A lower number yields a more sensitive system, so the system will
trigger a contamination alarm with less contamination present.
A higher number produces a less sensitive system, so more
contamination is required to trigger an alarm.
Enter a value between 20 and 295 microamps.
Default setting: 40uA.
Table 4.1
26 LD1500 User Guide 800.518.1519
Leak Configuration Options
4 Web Interface
Option Description
Leak Alarm Delay The amount of time that passes between the time a leak is detected
and the annunciation of the leak alarm.
The leak trip point must be exceeded for the duration of this delay.
Default setting: 20 seconds
Contamination
Alarm Delay
The amount of time that passes between the time a contamination
is detected and the annunciation of the contamination alarm.
The contamination trip point must be exceeded for the duration of
this delay.
Default setting: 120 seconds
Resistance Per Foot The resistance per foot (or meter) of cable determines the
LD1500’s ability to accurately detect the cable length installed and
calculate distances to leaks. Adjust this value to fine-tune the
accuracy of a distance-read leak detection system.
RLE’s orange water sensing cable has a base resistance of 2.800
ohms per foot. Most other sensing cables, including RLE’s green
chemical-resistant sensing cable, have a base resistance of 4.000
ohms per foot. Consult the sensing cable’s datasheet for further
information.
The resistance value must be entered as a 4-digit number between
2.000 and 4.250, with one number in the tens place and three
numbers past the decimal point (x.xxx).
Default setting: 2.800 ohms per foot.
Measurement
Display
Select either feet or meters to calibrate the LD1500 to the preferred
unit of measure. All distance calculations will adjust accordingly.
Default setting: Feet
Table 4.1
rletech.com LD1500 User Guide 27
Leak Configuration Options
4 Web Interface
4.3.2 Web Settings
The Web Settings menu allows users to set two different security level passwords on the
LD1500. A Read-Only level password allows users to only view the information and settings
of the LD1500. No settings or changes may be submitted to the unit. The Read/Write level
password allows users to change settings and configurations on the LD1500 as well as view all
information in the unit. The Web refresh rate changes the interval that the Home page
refreshes automatically when left open in an Internet browser.
Figure 4.6
Option Description
System Name Designate a name for the LD1500
Web Password Read
Only
Web Password
Read/Write
Web Refresh Rate Decide how often the web page refreshes - checks for new data
Table 4.2
Web Configuration
Two separate passwords can be configured on the LD1500.
The Read Only password allows users to access the LD1500’s web
interface and view the conditions of the system, but does not allow
users to make changes to the LD1500’s configuration.
The second configurable password on the LD1500 provides users
with expanded access.
The Read/Write password allows users to view the conditions of the
system and make changes to the LD1500’s configuration.
and reloads the web page - when left in an open web browser.
Enter a value from 10 to 999 seconds. If you enter 0, the screen will
not refresh on its own - you’ll have to click the refresh button on
your web browser or press F5 to refresh the screen.
Default setting: 10 seconds
Web Configuration Options
28 LD1500 User Guide 800.518.1519
4 Web Interface
4.3.3 Network/IP Settings
The Network settings allow users to change the network configuration of the LD1500. IP
address, Subnet Mask, and Default Route (Gateway) may be changed from this menu.
Figure 4.7
Option Description
MAC Address The MAC address is a unique identifier set by the manufacturer,
IP Address Set the IP address for the LD1500, so it can communicate on your
Net Mask Designate the device’s Subnet Mask. Contact your IT department
Def Route Designate the device’s default route (default gateway). If you do not
Table 4.3
Network/IP Settings
and is non-editable.
network. If you do not have an IP address for the device, obtain one
from your IT department.
Default IP address: 10.0.0.188
for further information.
Default subnet mask: 255.255.255.0
have a default route, obtain one from your IT department.
Default device route: 10.0.0.1
Network/IP Configuration Page
rletech.com LD1500 User Guide 29
4 Web Interface
4.3.4 SNMP
Use this page to configure the LD1500 for SNMP communications.
Figure 4.8
Option Description
System Name Designate a unique name for the LD1500. This name appears on
System Contact Designate the individual responsible for the LD1500.
System Location Enter of address of the LD1500’s physical location.
SNMP Trap Type Select the appropriate trap type from the drop-down menu.
Max Inform Retries The number of times the LD1500 will attempt to resend an
SNMP Configuration
the LD1500 Main Menu and is included as part of email
notifications.
V1 - Trap
V2C - Trap
V2C - Inform
Default setting: V1 -Trap
undelivered trap. Enter a number 0 - 999. Enter 0 for an unlimited
number of attempts.
Default setting: 0 (unlimited)
Inform Interval The number of minutes that passes between inform operations.
Enter a number of minutes 1 - 999
Default setting: 1
Table 4.4
30 LD1500 User Guide 800.518.1519
SNMP Options
4 Web Interface
4.3.5 SNMP/Syslog Communities 1 & 2
The SNMP/Syslog Communities Configuration pages identify devices that receive SNMP
Traps and/or Syslog messages from the LD1500 and interact with the LD1500 over the
network. To add a device to the Communities list, select a community number posted as
“empty.” Enter the receiving device's IP Address and an identifier for the device in the
Community field. An IP Address of 0.0.0.0 in this field allows any device to access the
LD1500 through a MIB browser. Select “Write” if the device will have Read/Write network
access. This allows the LD1500 to be configured over the network. Select “Traps” if the
device will receive Traps from the LD1500. Select “Syslog” if the device will receive Syslog
messages from the LD1500.
Figure 4.9
SNMP/Syslog Communities Configuration
4.3.6 SNMP Trap Test
The SNMP Trap Test page contains three buttons that allow the user to send SNMP Traps out
the Ethernet port, simulating an alarm event. Buttons are available to simulate a Leak
Detected, a Cable Break, and a Contamination alarm.
Figure 4.10
SNMP Trap Test
rletech.com LD1500 User Guide 31
4 Web Interface
4.3.7 EIA-485/Modbus/N2
If the LD1500 will communicate via the EIA-485 port, configure the necessary options here.
Figure 4.11
Option Description
Modbus/TCP/UDP
Slave Unit Identifier
Select EIA-485 Port
Function
EIA-485 Slave
Address
EIA-485 Baud Rate Sets the EIA-485 Port to 1200, 2400, 9600, 19200, or 38400 baud.
EIA-485 Parity Sets the EIA-485 Port to None, Even or Odd Parity. All the devices
Modbus Slave
Register Display
N2 Register Display
Log/Statistics
Table 4.5
Modbus/EIA-485 Configuration Page
Specify the slave address used on the LD1500's IP port. This
designator is used for Modbus RTU over an Ethernet connection.
Set the slave unit identifier, 1-254. 0 = disabled.
Sets the EIA-485 port for Modbus-Slave, BACnet MS/TP-Slave, or
Modbus N2.
Set the EIA-485 Port's slave address, 1-254. Each device on the
EIA-485 Modbus network must have a unique address.
All the devices connected to the Modbus network must be set to
operate at the same Baud rate.
connected to the Modbus network must be set to operate at the
same parity.
Displays the contents of the Modbus Slave Registers. See Table
5.3, “Output Registers” on page 39 and Table 5.5, “Input Registers”
on page 40 for descriptions of the register contents.
Displays the contents of the Modbus N2 registers and statistics.
EIA-485/Modbus/N2 Menu Options
32 LD1500 User Guide 800.518.1519
4 Web Interface
4.3.8 BACnet
The LD1500 can communicate via BACnet. BACnet allows building automation and control
devices to communicate, regardless of the services they perform.
Before the LD1500 can communicate via BACnet MS/TP, you need to change the EIA/485
port function. This is done on the EIA-485/Modbus/N2 screen. Refer to “EIA-485/Modbus/
N2” on page 32.
You also need to set the EIA-485 slave (MAC) address. This allows the device to
communicate on the string. This is also done on the EIA-485/Modbus/N2 screen, highlighted
in “EIA-485/Modbus/N2” on page 32. Once this is complete, configure the remaining BACnet
communications paramers as follows:
Figure 4.12
Option Description
BACnet Device Name Designate a unique name for the LD1500, as it will appear on the
BACnet Device ID The unique identifier for the LD1500 on the BACnet network.
BACnet Description The description of the LD1500 as it will appear on the BACnet
BACnet UDP Port This is the port to which the LD1500 will respond to BACnet
BACnet MSTP Max
Master
BACnet Information Displays the status of the BACnet interface, including Alarm flag
Table 4.6
BACnet Configuration Page
BACnet network.
network.
requests. The default number of zero in this field will configure the
LD1500 to listen on the standard BACnet port of 47808. See the
BACnet standard for more information.
Set the slave address, 1-127. 0 = slave only.
status, BACnet Objects, BACnet Property Identifiers, and BACnet
Device Objects.
BACnet Configuration Menu Options
rletech.com LD1500 User Guide 33
4 Web Interface
4.3.9 BACnet Register FD/BDT
The BACnet BDT Configuration page allows the user to review and edit BACnet options. .
Figure 4.13
Option Description
Register as Foreign
Device at IP
Registration Time-toLive
BACnet BBMD-BDT,
LD1500 IP Address,
#1 IP Address, #2 IP
Address, #3 IP
Address
BACnet Register FD/BDT Configuration
Register the LD1500 as a foreign device if it has an IP subnet
address that is different from the BACnet/IP network that the
LD1500 seeks to join. The register foreign device message from
the client to the BBMD is always from one IP device to another.
The amount of time within which the foreign device must re-register
with the BBMD. If the device does not re-register within this time,
the BBMD removes the device from its foreign device table and
discontinues forwarding messages to the foreign device.
Set this value from 1 - 9999 seconds.
These fields give the user a reference and edit capabilities of the
BACnet Broadcast Distribution Table. You do not need to
configure these fields; If the LD1500 is acting as a BACnet router,
these fields will automatically be populated by the BACnet network
controller.
34 LD1500 User Guide 800.518.1519
4 Web Interface
4.3.10 BACnet Alarm
The BACnet Alarm Configuration page allows the user to configure the BACnet alarm
settings.
Figure 4.14
Option Description
Recipient #1 IP
Address
PID BACnet Process Identifier - Additional information that can be sent
Notification Type Select unconfirmed or confirmed. If you select confirmed, the
Notification Class A list of devices to be informed if an event enrollment object
Notification Priority Designate a priority to controls where conflicting control situations
Leak Detected Alarms Select analog or binary.
APDU Timeout The amount of time in seconds between retransmissions of an
Number of APDU
retries
Table 4.7
BACnet Alarm
When there is a BACnet alarm, a message will be sent to this
address.
with an alarm to indicate what the alarm recipient should do once
the alarm is received.
recipient will be required to acknowledge the alarm.
determines that a warning or alarm message needs to be sent.
may occur.
APDU requiring acknowledgement for which no acknowledgement
has been received.
The maximum number of times an APDU is retransmitted.
BACnet Alarm Configuration Options
rletech.com LD1500 User Guide 35
4 Web Interface
4.3.11 System Management
The System Management page allows users to restore the unit to factory default settings and
upload firmware.
Figure 4.15
Option Description
Exit to Bootloader Forces the unit to stop running flash application to allow for
Restore Factory
Defaults
Table 4.8
System Management Page
firmware updates.
Resets the configuration and settings on the unit to all factory
defaults.
System Management Options
36 LD1500 User Guide 800.518.1519
CHAPTER 0MODBUS COMMUNICATION
This document describes the Modbus communications protocol as supported by the LD1500
Distance Read System. It includes details and information on how to configure the LD1500 for
communications via Modbus network.
5.1. Implementation Basics
C HAPTER
The LD1500 is capable of communicating via the half-duplex EIA-485 serial communication
standard. The LD1500 is configured to act as a slave device on a common network. The EIA485 medium allows for multiple devices on a multi-drop network. The LD1500 is a slave only
device and will never initiate a communications sequence.
5.1.1 Modes of Transmission
The Modbus protocol uses ASCII and RTU modes of transmission. The LD1500 supports only
the RTU mode of transmission, with 8 data bits, no parity and 1 stop bit. Every Modbus packet
consists of four fields:
♦ Slave Address Field
♦ Function Field
♦ Data Field
♦ Error Check Field (Checksum)
5.1.1.1 Slave Address Field
The slave address field is one byte in length and identifies the slave device involved in the
transaction. The valid address range is between 1 and 254. The slave address is set from the
Modbus/EIA-485 Configuration web page (see 4.3.7, “EIA-485/Modbus/N2” on page 32).
rletech.com LD1500 User Guide 37
5 Modbus Communication
5.1.1.2 Function Field
The function field is one byte in length and tells the LD1500 which function to perform. The
supported functions are 03 (Read 4xxxx output registers), 04 (Read 3xxxx input registers), 06
(Preset single register) and 16 (Preset multiple registers).
5.1.1.3 Data Field
The data field of the request is a variable length depending on the function. The data fields for
the LD1500 are 16-bit registers, transmitted high order byte first (big-endian).
5.1.1.4 Error Check (Checksum) Field
The checksum field lets the receiving device determine if the packet has transmission errors.
The LD1500 RTU mode uses a 16-bit cyclic redundancy check (CRC-16).
5.1.2 Exception Responses
If a Modbus master sends an invalid command to the LD1500 or attempts to read an invalid
register, an exception response is generated. The response packet will have the high order bit
of the function code set to one. The data field of the exception response contains the exception
error code.
Table 5.1
Code Name Description
01 Illegal Function The function code is not supported
02 Illegal Data Address Attempt to access an invalid address
03 Illegal Data Value Attempt to set a variable to an invalid value
Exception Codes
38 LD1500 User Guide 800.518.1519
5 Modbus Communication
5.2. Packet Communications for the LD1500
5.2.1 Function 03: Read Output Registers
To read the LD1500 parameter values, the master must send a Read Output Registers request
packet.The Read Output Registers request packet specifies a start register and the number of
registers to read. The start register is numbered from zero (40001 = zero, 40002 = one, etc).
Table 5.2
Read Registers Request Packet Read Registers Response Packet
Slave Address (1 byte) Slave Address (1 byte)
03 (Function code) (1 byte) 03 (Function code) (1 byte)
Start Register (2 bytes) Byte count (1 byte)
# of registers to read (2 bytes) First register (2 bytes)
CRC Checksum (2 bytes) Second register (2 bytes)
Table 5.3
Register Name Description Range, Units Range
40001 Leak Threshold Trip current for leak alarm 25-295 μAmps 0-65535
40002 Contamination Threshold Trip current for
40003 Spare 0-65535
40004 Spare 0-65535
Output Registers
Read Output Registers Packet Structure
…
CRC Checksum (2 bytes)
20-295 μAmps 0-65535
contamination alarm
40005 Spare 0-65535
40006 Spare 0-65535
40007 Spare 0-65535
40008 Spare 0-65535
40009 Spare 0-65535
40010 Spare 0-65535
40011 Spare 0-65535
40012 Spare 0-65535
40013 Spare 0-65535
40014 Spare 0-65535
40015 Spare 0-65535
40016 Leak Alarm Delay Leak Alarm Delay 5-995 seconds 0-65535
40017 Contamination Alarm Delay Contamination Alarm Delay 5-995 seconds 0-65535
rletech.com LD1500 User Guide 39
5 Modbus Communication
5.2.2 Function 04: Read Input Registers
To read the LD1500 input values, the master must send a Read Input Registers request packet.
The Read Input Registers request packet specifies a start register and the number of registers
to read. The start register is numbered from zero (30001 = zero, 30002 = one, etc).
Table 5.4
Read Registers Request Packet Read Registers Response Packet
Slave Address (1 byte) Slave Address (1 byte)
04 (Function code) (1 byte) 04 (Function code) (1 byte)
Start Register (2 bytes) Byte count (1 byte)
# of registers to read (2 bytes) First register (2 bytes)
CRC Checksum (2 bytes) Second register (2 bytes)
Table 5.5
Register Name Description Units Range
30001 Status Bit Level Status None 0-65535
30002 Leak Distance Location of Leak Ft/Meters 0-65535
30003 Units Unit of Measure 1=Ft 0=Meters 0-65535
30004 Leak Current Leakage current on cable μAmps 0-65535
Input Registers
Read Input Registers Packet Structure
…
CRC Checksum (2 bytes)
30005 Cable Length Installed Cable Length Ft/Meters 0-65535
30006 Loop1 Res Resistance of cable Ohms 0-65535
30007 Loop2 Res Resistance of cable Ohms 0-65535
30008 Res/Ft Resistance of cable Ohms x1000 0-65535
30009 Version Firmware version xx.xx X 100 0-65535
Table 5.6
Bit Description
00 1 = Leak is Detected
01 1 = Cable Break Alarm
02 1 = Contamination is detected
03-15 Spare
40 LD1500 User Guide 800.518.1519
Status Flags (Register 30001)
5 Modbus Communication
5.2.3 Function 06: Preset Single Register
To set a LD1500 parameter value, the master must send a Preset Single Register request
packet. The Preset Single Register request packet specifies a register and the data to write to
that register. The register is numbered from zero (40001 = zero, 40002 = one, etc).
Table 5.7
Preset Register Request Packet Preset Register Response Packet
Slave Address (1 byte) Slave Address (1 byte)
06 (Function code) (1 byte) 06 (Function code) (1 byte)
Register (2 bytes) Register (2 byte)
Data (2 bytes) Data (2 bytes)
CRC Checksum (2 bytes) CRC Checksum (2 bytes)
Preset Single Register Packet Structure
5.2.4 Function 16: Preset Multiple Registers
To set multiple LD1500 parameter values, the master must send a Preset Multiple Registers
request packet. The Preset Multiple Register request packet specifies a starting register, the
number of registers, a byte count and the data to write to the registers. The register is
numbered from zero (40001 = zero, 40002 = one, etc).
Table 5.8
Preset Registers Request Packet Preset Registers Response Packet
Slave Address (1 byte) Slave Address (1 byte)
Preset Multiple Registers Packet Structure
16 (Function code) (1 byte) 16 (Function code) (1 byte)
Start Register (2 bytes) Start Register (2 bytes)
# of registers to write (2 bytes) # of registers (2 bytes)
Byte Count (1 byte) CRC Checksum (2 bytes)
Data (2 bytes)
…
…
CRC Checksum (2 bytes)
rletech.com LD1500 User Guide 41
5 Modbus Communication
5.3. RTU Framing
The example below shows a typical Query/Response from a LD1500 module.
Table 5.9
Slave
Address
02 04 06 00 00 00 00 00 01 B5 A3
Response Sample
Function
Code
Count
Bytes of
Data
Register
Data
MSB LSB
Register
Data
MSB LSB
Register
Data
MSB LSB
CRC16
LSB
Slave address 2 responds to Function Code 4 with 6 bytes of hexadecimal data and ends with
CRC16 checksum.
Register Values:
40001 = 0000 (hex)
40002 = 0000 (hex)
40003 = 0001 (hex)
CRC16
MSB
42 LD1500 User Guide 800.518.1519
A PPENDIX
CHAPTER 0FIRMWARE UPDATES
Firmware updates are available at www.rletech.com. Download the appropriate firmware to an
accessible location on a PC connected to the same Local Area Network (LAN) as the LD1500.
A.1. Update the Flash Firmware Via Web Interface/
TFTP
Uploading firmware via TFTP requires a TFTP Client. It may be possible to download a free
license TFTP Client from the Internet. Consult your IT department to determine a compatible
client program.
Before updating the firmware, the firmware Flash application must be exited and then erased.
1 Navigate to the LD1500’s System Management menu.
2 From the System Management menu, click on the “Exit to Bootloader” button. You must
have write access to the unit in order to do this. The LD1500 will exit the application and
display a Bootloader web page.
3 3. Click on the “Erase Flash” button. You will be prompted for a username and password.
After entering the username and password, the Flash application will be erased.
Note To erase the flash, a special username and password are required. The username is
ld1500 (the “l” and “d” are lowercase), and the password is rle2tech.
4
Verify that your PC and the LD1500 are on the same subnetwork (LAN).
5 Open your TFTP client. Configure the client as follows.
a Host = LD1500 IP Address (10.0.0.188, for example)
b Port = 69
c Block Size = 64, 128, 256, 512, or 1024
d Note: The file must be sent in binary format (not ASCII).
rletech.com LD1500 User Guide 43
A Firmware Updates
6 From the TFTP client, Send or PUT the firmware file to the LD1500. It may take up to 30
seconds to complete the firmware upload.
7 After one minute, refresh the LD1500 web page. Notice that the Flash field now contains
the name of latest firmware. Click the “Start Application” button to reboot the unit.
A.2. Update the Firmware Via X-Modem
You may encounter a situation where you need up upgrade firmware on an RLE device via X-
Modem. If that should happen, these directions will walk you through the process.
1 Connect to the device using HyperTerminal.
2 Start firmware updates by either:
a Pressing any key after power-up when a 10 second window provides an opportunity to
abort the Flash Main Program, or
b Typing RESET to exit to Bootloader once the Main Menu appears.
3 The bootloader is customized a bit for each individual RLE device. For instance, the boot
prompt for the LD1500 displays on the screen as ld1500boot. The prompt for the FMS
displays as FCFboot. The LD2100 boot displays as ld2100boot, and the LD5200 displays
as ld5200boot. For the purposes of generalization in these instructions, the boot prompt is
called ***boot. Replace the *** for the type of controller you’re working with, and you’ll
have a more accurate representation of what you’ll see on your screen.
4 From the ***boot prompt, type ? and press Enter to see the list of available commands.
5 From the ***boot prompt, type ID and press Enter. Note which Flash has the lowest serial
number. The Flash with the lowest serial number is the backup. The idea is to erase the
backup, load the new version—which becomes the active Flash—then erase and load the
other Flash.
6 From the ***boot Prompt, erase the back up Flash program (the one with the lowest serial
number) by typing ERASE PRGM followed by Enter. After a few seconds, the screen will
update with an ok and ***boot>.
7 From the ***boot prompt, type LOAD PRGM XMODEM (LOAD PRGM1 XMODEM or
LOAD PRGM2 XMODEM if you’re updating firmware on an FMS) followed by Enter.
Select the same program that was erased.
8 From the HyperTerminal menu select Transfer -> Send File. Use the browse button to select
the firmware file from the computer’s directory. The file must be binary and have a .bin
extension. Select the file and upload it using the 1K X-Modem protocol. Then click Send.
9 A transfer status screen will be displayed. The transfer takes just a minute or two on less
complicated devices. When you upload the firmware file to an FMS, the transfer may take
as many as 10 minutes. Once the transfer is complete, the transfer status window will
automatically close. The HyperTerminal window will indicate that the upload is complete.
10From the ***boot prompt, type RUN or power down the device and restart it to verify that
the new Flash program runs.
11Press Enter to display the ***Main Menu and repeat the steps above to erase and download
to the other Flash program chip.
44 LD1500 User Guide 800.518.1519
A Firmware Updates
12Once the firmware upgrade is complete, disconnect the serial cable and close
HyperTerminal.
A.3. Update the Flash Firmware Via Bootloader
Note: This option is only available on LD1500 units running bootloader version 2.5 or newer.
Before updating the firmware, the firmware Flash application must be exited and then erased.
1 Navigate to the LD1500’s System Management menu.
2 From the System Management menu, click on the “Exit to Bootloader” button. You must
have write access to the unit in order to do this. The LD1500 will exit the application and
display a Bootloader web page.
3 3. Click on the “Erase Flash” button. You will be prompted for a username and password.
After entering the username and password, the Flash application will be erased.
Note To erase the flash, a special username and password are required. The username is
ld1500 (the “l” and “d” are lowercase), and the password is rle2tech.
4
Use the firmware update boxes to browse to and upload the firmware file.
5 Use the firmware verify boxes to ensure the firmware was properly uploaded.
6 After one minute, refresh the LD1500 web page. Notice that the Firmware Version field
now contains the name of latest firmware. Click the “Start Application” button to reboot
the unit.
rletech.com LD1500 User Guide 45
A Firmware Updates
46 LD1500 User Guide 800.518.1519
A PPENDIX
CHAPTER 0PREVENTIVE MAINTENANCE
Follow these steps monthly to test the system and ensure that the control panel is functioning
properly:
1 Place water on the cable.
2 Verify the Leak Detected alarm through the Web interface or BMS.
3 Compare the distance reading on the LD1500 to a reference map (if available) to verify that
the LD1500 displays the correct leak location.
4 Dry the cable and verify that the LD1500 returns to normal.
5 Remove the End-of-Line terminator (EOL).
6 Verify the Cable Break alarm through the Web interface.
7 Reinstall the EOL.
8 Verify that the LD1500 returns to normal.
Monitor the cable current monthly to verify that the cable is not being contaminated. The
LD1500 will alarm on cable contamination if the contamination is excessive.
♦ From the LD1500 Web interface, verify that the Cable Current is less than 25μA. If the
cable current is greater than 25μA, it is recommended to troubleshoot the cables to
determine which cable is contaminated. The contaminated cable should be removed,
cleaned, retested and reinstalled.
rletech.com LD1500 User Guide 47
B Preventive Maintenance
48 LD1500 User Guide 800.518.1519
Problem Action
A PPENDIX
CHAPTER 0TROUBLESHOOTING
Control Panel will not
Power Up
Cable Break Alarm
Table C.1
Troubleshooting Problems with the LD1500
1 Check with a DVOM (multi-meter) for AC or DC input power on
the lower left hand terminal block on the LD1500. If no voltage is
present at terminal block, check the circuit (breaker) or power
supply the LD1500 control panel is powered by. If voltage is
present, go to step 2.
2 Contact RLE Technologies for unit replacement and/or
evaluation. If voltage is present and no LEDs are illuminated,
contact RLE Technologies for further troubleshooting.
1 Verify that the leader cable from the SeaHawk Water Leak
Detection Cable (sensing cable) run is plugged into terminal
block marked “Cable.”
2 Verify that the End-of-Line terminator (EOL) is installed on the
end of the orange sensing cable run. If present at the end of the
cable run, go to step 3.
3 Remove the EOL terminator from the end of the cable run and
install it onto the end of the leader cable coming from the control
panel. If the condition clears, there is a damaged/faulty section of
sensing cable. Start moving the EOL terminator to the end of
each section of sensing cable to isolate the faulty section. If the
condition does not clear, go to step 4.
4 Power down (shut off) the control panel. Remove terminal block
marked “Cable” from the unit. Remove the four conductors from
the leader cable wire going into the four position terminal block.
Install a jumper wire between pins 1 and 2 and another jumper
wire between pins 3 and 4. Reinstall the terminal block back into
TB2. If the cable break condition clears, there is a problem with
the leader cable. If the condition does not clear, contact RLE
Technologies for further support.
rletech.com LD1500 User Guide 49
C Troubleshooting
Problem Action
Control Panel not
Calculating Proper
Length of Cable
Control Panel not
Calculating Proper
Leak Distance
Cable Contamination
Alarm
1 First verify the proper wiring order into terminal block marked
“Cable.” Wiring color code should be as follows from left to right:
white, black, green, and red.
2 Calibrate your cable. To do this, adjust the Resistance per Foot
(Configuration menu via the Web Interface). If the condition does
not change, please contact RLE Technologies. The control panel
is pre-calibrated from the factory. The overall footage should be
within 5% of actual installed length.
1 Check the distance on the cable run to verify that the control
panel is monitoring. Verify there is no water along the cable run.
Check to see if multiple leaks are present on the cable. The first
leak should be read and latched by the system; however, if the
system is updated or simultaneous leaks occur (2 or more) within
30 seconds of the initial leak, the system may display the
average distance (distance of the first leak + distance of the
second leak / 2). If no water is present, go to step 2.
2 Power down (shut off) the control panel and remove the End-of-
Line terminator (EOL) from the end of the sensing cable. Locate
the first section of sensing cable from the LD1500 control panel.
Where it joins to the second section of cable, disconnect and
install the EOL terminator at the end of the first section of
sensing cable. Turn power back on at control panel. Once the
control panel runs for five to ten minutes, use a damp cloth, rag
or paper towel and place it on the end of the orange sensing
cable. If the leak is calculated correctly, remove the EOL
terminator; reconnect the sensing cable and move down to the
next section of cable. Repeat this process until a faulty reading is
obtained. If the reading is off at the first section of cable, there
may be miscalculations from the LD1500 unit, please contact
RLE Technologies for support.
1 To clear a contamination alarm, the cable must be removed and
cleaned. Usually the cable can be cleaned by pulling it through a
clean damp rag.
2 If the cable is contaminated by oil, glycol or chemicals, the cable
can be washed. Use a mild detergent solution of 1 capful to 2
gallons lukewarm water (<105°F). Agitate the cable in a suitable
container, rinse with clear lukewarm water and wipe dry with a
clean towel. The cable may also be cleaned by wiping it down
with Isopropyl Alcohol.
3 Retest the cable by connecting it to the LD1500 before
reinstalling it under the floor.
Table C.1
Troubleshooting Problems with the LD1500 (continued)
Note Contamination and/or physical damage to the cable is not covered under warranty. For all
other troubleshooting concerns and questions regarding this product, contact RLE
Technologies.
50 LD1500 User Guide 800.518.1519
A PPENDIX
CHAPTER 0TECHNICAL SPECIFICATIONS
Table D.1
Technical Specifications
Power Requires an isolated power supply.
24VDC Isolated @ 600mA max, 50/60Hz; requires RLE
power supply PSWA-DC-24 (not included)
24VAC Isolated @ 600mA max; requires RLE power
supply: WA-AC-24 (not included)
Inputs
Water Leak Detection Cable Compatible with SeaHawk sensing cable (not included)
Cable Input Requires SeaHawk LC-KIT: 15ft (4.57m) leader cable and
EOL
Recommended Maximum Length 1,500ft (457.2m)
Detection Accuracy ± 2ft (0.6m)+/- 0.5% of the cable length
Detection Repeatability ± 2ft (0.6m) +/- 0.25% of the cable length
Detection Response Time 5-995sec, software adjustable in 5sec increments; ±2sec
Communications Ports
Ethernet 10/100BASE-T, RJ45 connector; 500VAC RMS isolation
EIA-232 DB9 female connector; 9600 baud; 8 data bits, no parity, 1
stop bit
EIA-485 1200, 2400, 9600, 19200 or 38400 baud (selectable);
Parity: none, even or odd, 8 data bits, 1 stop bit
rletech.com LD1500 User Guide 51
D Technical Specifications
Table D.1
Technical Specifications (continued)
Protocols
TCP/IP, HTML, TFTP IPv4.0; webpages comply with Rehabilitation Act of 1973,
SNMP V1: V2C MIB-2 compliant; NMS Manageable with Get, Set,
Modbus (EIA-485) Slave; RTU Mode; Supports function codes 03, 04, 06 and
Modbus TCP/IP, UDP/IP Modbus Slave; TCP/IP, UDP/IP transmission protocol
BACnet/IP Conformance Level 1
BACnet (EIA-485) Slave; MS/TP
Terminal Emulation (EIA-232) VT100 compatible
Alarm Notification
Visual Alarm Bi-color status LED
SNMP Traps (Ethernet) 2 Community Strings
Logging Capabilities
Event Log Last 10 events
Login Security
sections 504 and 508, US Dept of Education (website
accessibility for computer users with disabilities)
Trap/Inform
16; Johnson N2
Web Browser Access (Ethernet) 1 Web password Read Only; 1 Web password Read/Write
Terminal Emulation Access None
Front Panel Interface
LED Indicators
Power/Status: 1 bi-color (Power On: green; Alarm / Cable
Fault / Cable Contamination: red)
Operating Environment
Temperature 32° to 122°F (0° to 50°C)
Humidity 5% to 95% RH, non-condensing
Altitude 15,000ft (4,572m) max.
Storage Environment -4° to 185°F (-20° to 85°C)
Dimensions 7.075"W x 3.625"H x 1.25"D (179.7mmW x 92.07mmH
x31.75mmD)
Weight 1.5 lbs. (680g)
Mounting Vertical wall mount
Certifications CE; ETL listed: conforms to UL 61010-1, EN 61010-1;
certified to CSA C22.2 NO. 61010-1; RoHS compliant
52 LD1500 User Guide 800.518.1519
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